xref: /freebsd/contrib/llvm-project/libcxx/include/valarray (revision cfd6422a5217410fbd66f7a7a8a64d9d85e61229)
1// -*- C++ -*-
2//===-------------------------- valarray ----------------------------------===//
3//
4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef _LIBCPP_VALARRAY
11#define _LIBCPP_VALARRAY
12
13/*
14    valarray synopsis
15
16namespace std
17{
18
19template<class T>
20class valarray
21{
22public:
23    typedef T value_type;
24
25    // construct/destroy:
26    valarray();
27    explicit valarray(size_t n);
28    valarray(const value_type& x, size_t n);
29    valarray(const value_type* px, size_t n);
30    valarray(const valarray& v);
31    valarray(valarray&& v) noexcept;
32    valarray(const slice_array<value_type>& sa);
33    valarray(const gslice_array<value_type>& ga);
34    valarray(const mask_array<value_type>& ma);
35    valarray(const indirect_array<value_type>& ia);
36    valarray(initializer_list<value_type> il);
37    ~valarray();
38
39    // assignment:
40    valarray& operator=(const valarray& v);
41    valarray& operator=(valarray&& v) noexcept;
42    valarray& operator=(initializer_list<value_type> il);
43    valarray& operator=(const value_type& x);
44    valarray& operator=(const slice_array<value_type>& sa);
45    valarray& operator=(const gslice_array<value_type>& ga);
46    valarray& operator=(const mask_array<value_type>& ma);
47    valarray& operator=(const indirect_array<value_type>& ia);
48
49    // element access:
50    const value_type& operator[](size_t i) const;
51    value_type&       operator[](size_t i);
52
53    // subset operations:
54    valarray                   operator[](slice s) const;
55    slice_array<value_type>    operator[](slice s);
56    valarray                   operator[](const gslice& gs) const;
57    gslice_array<value_type>   operator[](const gslice& gs);
58    valarray                   operator[](const valarray<bool>& vb) const;
59    mask_array<value_type>     operator[](const valarray<bool>& vb);
60    valarray                   operator[](const valarray<size_t>& vs) const;
61    indirect_array<value_type> operator[](const valarray<size_t>& vs);
62
63    // unary operators:
64    valarray       operator+() const;
65    valarray       operator-() const;
66    valarray       operator~() const;
67    valarray<bool> operator!() const;
68
69    // computed assignment:
70    valarray& operator*= (const value_type& x);
71    valarray& operator/= (const value_type& x);
72    valarray& operator%= (const value_type& x);
73    valarray& operator+= (const value_type& x);
74    valarray& operator-= (const value_type& x);
75    valarray& operator^= (const value_type& x);
76    valarray& operator&= (const value_type& x);
77    valarray& operator|= (const value_type& x);
78    valarray& operator<<=(const value_type& x);
79    valarray& operator>>=(const value_type& x);
80
81    valarray& operator*= (const valarray& v);
82    valarray& operator/= (const valarray& v);
83    valarray& operator%= (const valarray& v);
84    valarray& operator+= (const valarray& v);
85    valarray& operator-= (const valarray& v);
86    valarray& operator^= (const valarray& v);
87    valarray& operator|= (const valarray& v);
88    valarray& operator&= (const valarray& v);
89    valarray& operator<<=(const valarray& v);
90    valarray& operator>>=(const valarray& v);
91
92    // member functions:
93    void swap(valarray& v) noexcept;
94
95    size_t size() const;
96
97    value_type sum() const;
98    value_type min() const;
99    value_type max() const;
100
101    valarray shift (int i) const;
102    valarray cshift(int i) const;
103    valarray apply(value_type f(value_type)) const;
104    valarray apply(value_type f(const value_type&)) const;
105    void resize(size_t n, value_type x = value_type());
106};
107
108class slice
109{
110public:
111    slice();
112    slice(size_t start, size_t size, size_t stride);
113
114    size_t start()  const;
115    size_t size()   const;
116    size_t stride() const;
117};
118
119template <class T>
120class slice_array
121{
122public:
123    typedef T value_type;
124
125    const slice_array& operator=(const slice_array& sa) const;
126    void operator=  (const valarray<value_type>& v) const;
127    void operator*= (const valarray<value_type>& v) const;
128    void operator/= (const valarray<value_type>& v) const;
129    void operator%= (const valarray<value_type>& v) const;
130    void operator+= (const valarray<value_type>& v) const;
131    void operator-= (const valarray<value_type>& v) const;
132    void operator^= (const valarray<value_type>& v) const;
133    void operator&= (const valarray<value_type>& v) const;
134    void operator|= (const valarray<value_type>& v) const;
135    void operator<<=(const valarray<value_type>& v) const;
136    void operator>>=(const valarray<value_type>& v) const;
137
138    void operator=(const value_type& x) const;
139
140    slice_array() = delete;
141};
142
143class gslice
144{
145public:
146    gslice();
147    gslice(size_t start, const valarray<size_t>& size,
148                         const valarray<size_t>& stride);
149
150    size_t           start()  const;
151    valarray<size_t> size()   const;
152    valarray<size_t> stride() const;
153};
154
155template <class T>
156class gslice_array
157{
158public:
159    typedef T value_type;
160
161    void operator=  (const valarray<value_type>& v) const;
162    void operator*= (const valarray<value_type>& v) const;
163    void operator/= (const valarray<value_type>& v) const;
164    void operator%= (const valarray<value_type>& v) const;
165    void operator+= (const valarray<value_type>& v) const;
166    void operator-= (const valarray<value_type>& v) const;
167    void operator^= (const valarray<value_type>& v) const;
168    void operator&= (const valarray<value_type>& v) const;
169    void operator|= (const valarray<value_type>& v) const;
170    void operator<<=(const valarray<value_type>& v) const;
171    void operator>>=(const valarray<value_type>& v) const;
172
173    gslice_array(const gslice_array& ga);
174    ~gslice_array();
175    const gslice_array& operator=(const gslice_array& ga) const;
176    void operator=(const value_type& x) const;
177
178    gslice_array() = delete;
179};
180
181template <class T>
182class mask_array
183{
184public:
185    typedef T value_type;
186
187    void operator=  (const valarray<value_type>& v) const;
188    void operator*= (const valarray<value_type>& v) const;
189    void operator/= (const valarray<value_type>& v) const;
190    void operator%= (const valarray<value_type>& v) const;
191    void operator+= (const valarray<value_type>& v) const;
192    void operator-= (const valarray<value_type>& v) const;
193    void operator^= (const valarray<value_type>& v) const;
194    void operator&= (const valarray<value_type>& v) const;
195    void operator|= (const valarray<value_type>& v) const;
196    void operator<<=(const valarray<value_type>& v) const;
197    void operator>>=(const valarray<value_type>& v) const;
198
199    mask_array(const mask_array& ma);
200    ~mask_array();
201    const mask_array& operator=(const mask_array& ma) const;
202    void operator=(const value_type& x) const;
203
204    mask_array() = delete;
205};
206
207template <class T>
208class indirect_array
209{
210public:
211    typedef T value_type;
212
213    void operator=  (const valarray<value_type>& v) const;
214    void operator*= (const valarray<value_type>& v) const;
215    void operator/= (const valarray<value_type>& v) const;
216    void operator%= (const valarray<value_type>& v) const;
217    void operator+= (const valarray<value_type>& v) const;
218    void operator-= (const valarray<value_type>& v) const;
219    void operator^= (const valarray<value_type>& v) const;
220    void operator&= (const valarray<value_type>& v) const;
221    void operator|= (const valarray<value_type>& v) const;
222    void operator<<=(const valarray<value_type>& v) const;
223    void operator>>=(const valarray<value_type>& v) const;
224
225    indirect_array(const indirect_array& ia);
226    ~indirect_array();
227    const indirect_array& operator=(const indirect_array& ia) const;
228    void operator=(const value_type& x) const;
229
230    indirect_array() = delete;
231};
232
233template<class T> void swap(valarray<T>& x, valarray<T>& y) noexcept;
234
235template<class T> valarray<T> operator* (const valarray<T>& x, const valarray<T>& y);
236template<class T> valarray<T> operator* (const valarray<T>& x, const T& y);
237template<class T> valarray<T> operator* (const T& x, const valarray<T>& y);
238
239template<class T> valarray<T> operator/ (const valarray<T>& x, const valarray<T>& y);
240template<class T> valarray<T> operator/ (const valarray<T>& x, const T& y);
241template<class T> valarray<T> operator/ (const T& x, const valarray<T>& y);
242
243template<class T> valarray<T> operator% (const valarray<T>& x, const valarray<T>& y);
244template<class T> valarray<T> operator% (const valarray<T>& x, const T& y);
245template<class T> valarray<T> operator% (const T& x, const valarray<T>& y);
246
247template<class T> valarray<T> operator+ (const valarray<T>& x, const valarray<T>& y);
248template<class T> valarray<T> operator+ (const valarray<T>& x, const T& y);
249template<class T> valarray<T> operator+ (const T& x, const valarray<T>& y);
250
251template<class T> valarray<T> operator- (const valarray<T>& x, const valarray<T>& y);
252template<class T> valarray<T> operator- (const valarray<T>& x, const T& y);
253template<class T> valarray<T> operator- (const T& x, const valarray<T>& y);
254
255template<class T> valarray<T> operator^ (const valarray<T>& x, const valarray<T>& y);
256template<class T> valarray<T> operator^ (const valarray<T>& x, const T& y);
257template<class T> valarray<T> operator^ (const T& x, const valarray<T>& y);
258
259template<class T> valarray<T> operator& (const valarray<T>& x, const valarray<T>& y);
260template<class T> valarray<T> operator& (const valarray<T>& x, const T& y);
261template<class T> valarray<T> operator& (const T& x, const valarray<T>& y);
262
263template<class T> valarray<T> operator| (const valarray<T>& x, const valarray<T>& y);
264template<class T> valarray<T> operator| (const valarray<T>& x, const T& y);
265template<class T> valarray<T> operator| (const T& x, const valarray<T>& y);
266
267template<class T> valarray<T> operator<<(const valarray<T>& x, const valarray<T>& y);
268template<class T> valarray<T> operator<<(const valarray<T>& x, const T& y);
269template<class T> valarray<T> operator<<(const T& x, const valarray<T>& y);
270
271template<class T> valarray<T> operator>>(const valarray<T>& x, const valarray<T>& y);
272template<class T> valarray<T> operator>>(const valarray<T>& x, const T& y);
273template<class T> valarray<T> operator>>(const T& x, const valarray<T>& y);
274
275template<class T> valarray<bool> operator&&(const valarray<T>& x, const valarray<T>& y);
276template<class T> valarray<bool> operator&&(const valarray<T>& x, const T& y);
277template<class T> valarray<bool> operator&&(const T& x, const valarray<T>& y);
278
279template<class T> valarray<bool> operator||(const valarray<T>& x, const valarray<T>& y);
280template<class T> valarray<bool> operator||(const valarray<T>& x, const T& y);
281template<class T> valarray<bool> operator||(const T& x, const valarray<T>& y);
282
283template<class T> valarray<bool> operator==(const valarray<T>& x, const valarray<T>& y);
284template<class T> valarray<bool> operator==(const valarray<T>& x, const T& y);
285template<class T> valarray<bool> operator==(const T& x, const valarray<T>& y);
286
287template<class T> valarray<bool> operator!=(const valarray<T>& x, const valarray<T>& y);
288template<class T> valarray<bool> operator!=(const valarray<T>& x, const T& y);
289template<class T> valarray<bool> operator!=(const T& x, const valarray<T>& y);
290
291template<class T> valarray<bool> operator< (const valarray<T>& x, const valarray<T>& y);
292template<class T> valarray<bool> operator< (const valarray<T>& x, const T& y);
293template<class T> valarray<bool> operator< (const T& x, const valarray<T>& y);
294
295template<class T> valarray<bool> operator> (const valarray<T>& x, const valarray<T>& y);
296template<class T> valarray<bool> operator> (const valarray<T>& x, const T& y);
297template<class T> valarray<bool> operator> (const T& x, const valarray<T>& y);
298
299template<class T> valarray<bool> operator<=(const valarray<T>& x, const valarray<T>& y);
300template<class T> valarray<bool> operator<=(const valarray<T>& x, const T& y);
301template<class T> valarray<bool> operator<=(const T& x, const valarray<T>& y);
302
303template<class T> valarray<bool> operator>=(const valarray<T>& x, const valarray<T>& y);
304template<class T> valarray<bool> operator>=(const valarray<T>& x, const T& y);
305template<class T> valarray<bool> operator>=(const T& x, const valarray<T>& y);
306
307template<class T> valarray<T> abs (const valarray<T>& x);
308template<class T> valarray<T> acos (const valarray<T>& x);
309template<class T> valarray<T> asin (const valarray<T>& x);
310template<class T> valarray<T> atan (const valarray<T>& x);
311
312template<class T> valarray<T> atan2(const valarray<T>& x, const valarray<T>& y);
313template<class T> valarray<T> atan2(const valarray<T>& x, const T& y);
314template<class T> valarray<T> atan2(const T& x, const valarray<T>& y);
315
316template<class T> valarray<T> cos (const valarray<T>& x);
317template<class T> valarray<T> cosh (const valarray<T>& x);
318template<class T> valarray<T> exp (const valarray<T>& x);
319template<class T> valarray<T> log (const valarray<T>& x);
320template<class T> valarray<T> log10(const valarray<T>& x);
321
322template<class T> valarray<T> pow(const valarray<T>& x, const valarray<T>& y);
323template<class T> valarray<T> pow(const valarray<T>& x, const T& y);
324template<class T> valarray<T> pow(const T& x, const valarray<T>& y);
325
326template<class T> valarray<T> sin (const valarray<T>& x);
327template<class T> valarray<T> sinh (const valarray<T>& x);
328template<class T> valarray<T> sqrt (const valarray<T>& x);
329template<class T> valarray<T> tan (const valarray<T>& x);
330template<class T> valarray<T> tanh (const valarray<T>& x);
331
332template <class T> unspecified1 begin(valarray<T>& v);
333template <class T> unspecified2 begin(const valarray<T>& v);
334template <class T> unspecified1 end(valarray<T>& v);
335template <class T> unspecified2 end(const valarray<T>& v);
336
337}  // std
338
339*/
340
341#include <__config>
342#include <cstddef>
343#include <cmath>
344#include <initializer_list>
345#include <algorithm>
346#include <functional>
347#include <new>
348
349#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
350#pragma GCC system_header
351#endif
352
353_LIBCPP_PUSH_MACROS
354#include <__undef_macros>
355
356
357_LIBCPP_BEGIN_NAMESPACE_STD
358
359template<class _Tp> class _LIBCPP_TEMPLATE_VIS valarray;
360
361class _LIBCPP_TEMPLATE_VIS slice
362{
363    size_t __start_;
364    size_t __size_;
365    size_t __stride_;
366public:
367    _LIBCPP_INLINE_VISIBILITY
368    slice()
369        : __start_(0),
370          __size_(0),
371          __stride_(0)
372          {}
373
374    _LIBCPP_INLINE_VISIBILITY
375    slice(size_t __start, size_t __size, size_t __stride)
376        : __start_(__start),
377          __size_(__size),
378          __stride_(__stride)
379          {}
380
381    _LIBCPP_INLINE_VISIBILITY size_t start()  const {return __start_;}
382    _LIBCPP_INLINE_VISIBILITY size_t size()   const {return __size_;}
383    _LIBCPP_INLINE_VISIBILITY size_t stride() const {return __stride_;}
384};
385
386template <class _Tp> class _LIBCPP_TEMPLATE_VIS slice_array;
387class _LIBCPP_TYPE_VIS gslice;
388template <class _Tp> class _LIBCPP_TEMPLATE_VIS gslice_array;
389template <class _Tp> class _LIBCPP_TEMPLATE_VIS mask_array;
390template <class _Tp> class _LIBCPP_TEMPLATE_VIS indirect_array;
391
392template <class _Tp>
393_LIBCPP_INLINE_VISIBILITY
394_Tp*
395begin(valarray<_Tp>& __v);
396
397template <class _Tp>
398_LIBCPP_INLINE_VISIBILITY
399const _Tp*
400begin(const valarray<_Tp>& __v);
401
402template <class _Tp>
403_LIBCPP_INLINE_VISIBILITY
404_Tp*
405end(valarray<_Tp>& __v);
406
407template <class _Tp>
408_LIBCPP_INLINE_VISIBILITY
409const _Tp*
410end(const valarray<_Tp>& __v);
411
412template <class _Op, class _A0>
413struct _UnaryOp
414{
415    typedef typename _Op::result_type result_type;
416    typedef typename _A0::value_type value_type;
417
418    _Op __op_;
419    _A0 __a0_;
420
421    _LIBCPP_INLINE_VISIBILITY
422    _UnaryOp(const _Op& __op, const _A0& __a0) : __op_(__op), __a0_(__a0) {}
423
424    _LIBCPP_INLINE_VISIBILITY
425    result_type operator[](size_t __i) const {return __op_(__a0_[__i]);}
426
427    _LIBCPP_INLINE_VISIBILITY
428    size_t size() const {return __a0_.size();}
429};
430
431template <class _Op, class _A0, class _A1>
432struct _BinaryOp
433{
434    typedef typename _Op::result_type result_type;
435    typedef typename _A0::value_type value_type;
436
437    _Op __op_;
438    _A0 __a0_;
439    _A1 __a1_;
440
441    _LIBCPP_INLINE_VISIBILITY
442    _BinaryOp(const _Op& __op, const _A0& __a0, const _A1& __a1)
443        : __op_(__op), __a0_(__a0), __a1_(__a1) {}
444
445    _LIBCPP_INLINE_VISIBILITY
446    value_type operator[](size_t __i) const {return __op_(__a0_[__i], __a1_[__i]);}
447
448    _LIBCPP_INLINE_VISIBILITY
449    size_t size() const {return __a0_.size();}
450};
451
452template <class _Tp>
453class __scalar_expr
454{
455public:
456    typedef _Tp        value_type;
457    typedef const _Tp& result_type;
458private:
459    const value_type& __t_;
460    size_t __s_;
461public:
462    _LIBCPP_INLINE_VISIBILITY
463    explicit __scalar_expr(const value_type& __t, size_t __s) : __t_(__t), __s_(__s) {}
464
465    _LIBCPP_INLINE_VISIBILITY
466    result_type operator[](size_t) const {return __t_;}
467
468    _LIBCPP_INLINE_VISIBILITY
469    size_t size() const {return __s_;}
470};
471
472template <class _Tp>
473struct __unary_plus : unary_function<_Tp, _Tp>
474{
475    _LIBCPP_INLINE_VISIBILITY
476    _Tp operator()(const _Tp& __x) const
477        {return +__x;}
478};
479
480template <class _Tp>
481struct __bit_not  : unary_function<_Tp, _Tp>
482{
483    _LIBCPP_INLINE_VISIBILITY
484    _Tp operator()(const _Tp& __x) const
485        {return ~__x;}
486};
487
488template <class _Tp>
489struct __bit_shift_left : binary_function<_Tp, _Tp, _Tp>
490{
491    _LIBCPP_INLINE_VISIBILITY
492    _Tp operator()(const _Tp& __x, const _Tp& __y) const
493        {return __x << __y;}
494};
495
496template <class _Tp>
497struct __bit_shift_right : binary_function<_Tp, _Tp, _Tp>
498{
499    _LIBCPP_INLINE_VISIBILITY
500    _Tp operator()(const _Tp& __x, const _Tp& __y) const
501        {return __x >> __y;}
502};
503
504template <class _Tp, class _Fp>
505struct __apply_expr   : unary_function<_Tp, _Tp>
506{
507private:
508    _Fp __f_;
509public:
510    _LIBCPP_INLINE_VISIBILITY
511    explicit __apply_expr(_Fp __f) : __f_(__f) {}
512
513    _LIBCPP_INLINE_VISIBILITY
514    _Tp operator()(const _Tp& __x) const
515        {return __f_(__x);}
516};
517
518template <class _Tp>
519struct __abs_expr : unary_function<_Tp, _Tp>
520{
521    _LIBCPP_INLINE_VISIBILITY
522    _Tp operator()(const _Tp& __x) const
523        {return abs(__x);}
524};
525
526template <class _Tp>
527struct __acos_expr : unary_function<_Tp, _Tp>
528{
529    _LIBCPP_INLINE_VISIBILITY
530    _Tp operator()(const _Tp& __x) const
531        {return acos(__x);}
532};
533
534template <class _Tp>
535struct __asin_expr : unary_function<_Tp, _Tp>
536{
537    _LIBCPP_INLINE_VISIBILITY
538    _Tp operator()(const _Tp& __x) const
539        {return asin(__x);}
540};
541
542template <class _Tp>
543struct __atan_expr : unary_function<_Tp, _Tp>
544{
545    _LIBCPP_INLINE_VISIBILITY
546    _Tp operator()(const _Tp& __x) const
547        {return atan(__x);}
548};
549
550template <class _Tp>
551struct __atan2_expr : binary_function<_Tp, _Tp, _Tp>
552{
553    _LIBCPP_INLINE_VISIBILITY
554    _Tp operator()(const _Tp& __x, const _Tp& __y) const
555        {return atan2(__x, __y);}
556};
557
558template <class _Tp>
559struct __cos_expr : unary_function<_Tp, _Tp>
560{
561    _LIBCPP_INLINE_VISIBILITY
562    _Tp operator()(const _Tp& __x) const
563        {return cos(__x);}
564};
565
566template <class _Tp>
567struct __cosh_expr : unary_function<_Tp, _Tp>
568{
569    _LIBCPP_INLINE_VISIBILITY
570    _Tp operator()(const _Tp& __x) const
571        {return cosh(__x);}
572};
573
574template <class _Tp>
575struct __exp_expr : unary_function<_Tp, _Tp>
576{
577    _LIBCPP_INLINE_VISIBILITY
578    _Tp operator()(const _Tp& __x) const
579        {return exp(__x);}
580};
581
582template <class _Tp>
583struct __log_expr : unary_function<_Tp, _Tp>
584{
585    _LIBCPP_INLINE_VISIBILITY
586    _Tp operator()(const _Tp& __x) const
587        {return log(__x);}
588};
589
590template <class _Tp>
591struct __log10_expr : unary_function<_Tp, _Tp>
592{
593    _LIBCPP_INLINE_VISIBILITY
594    _Tp operator()(const _Tp& __x) const
595        {return log10(__x);}
596};
597
598template <class _Tp>
599struct __pow_expr : binary_function<_Tp, _Tp, _Tp>
600{
601    _LIBCPP_INLINE_VISIBILITY
602    _Tp operator()(const _Tp& __x, const _Tp& __y) const
603        {return pow(__x, __y);}
604};
605
606template <class _Tp>
607struct __sin_expr : unary_function<_Tp, _Tp>
608{
609    _LIBCPP_INLINE_VISIBILITY
610    _Tp operator()(const _Tp& __x) const
611        {return sin(__x);}
612};
613
614template <class _Tp>
615struct __sinh_expr : unary_function<_Tp, _Tp>
616{
617    _LIBCPP_INLINE_VISIBILITY
618    _Tp operator()(const _Tp& __x) const
619        {return sinh(__x);}
620};
621
622template <class _Tp>
623struct __sqrt_expr : unary_function<_Tp, _Tp>
624{
625    _LIBCPP_INLINE_VISIBILITY
626    _Tp operator()(const _Tp& __x) const
627        {return sqrt(__x);}
628};
629
630template <class _Tp>
631struct __tan_expr : unary_function<_Tp, _Tp>
632{
633    _LIBCPP_INLINE_VISIBILITY
634    _Tp operator()(const _Tp& __x) const
635        {return tan(__x);}
636};
637
638template <class _Tp>
639struct __tanh_expr : unary_function<_Tp, _Tp>
640{
641    _LIBCPP_INLINE_VISIBILITY
642    _Tp operator()(const _Tp& __x) const
643        {return tanh(__x);}
644};
645
646template <class _ValExpr>
647class __slice_expr
648{
649    typedef typename remove_reference<_ValExpr>::type  _RmExpr;
650public:
651    typedef typename _RmExpr::value_type value_type;
652    typedef value_type result_type;
653
654private:
655    _ValExpr __expr_;
656    size_t __start_;
657    size_t __size_;
658    size_t __stride_;
659
660    _LIBCPP_INLINE_VISIBILITY
661    __slice_expr(const slice& __sl, const _RmExpr& __e)
662        : __expr_(__e),
663          __start_(__sl.start()),
664          __size_(__sl.size()),
665          __stride_(__sl.stride())
666        {}
667public:
668
669    _LIBCPP_INLINE_VISIBILITY
670    result_type operator[](size_t __i) const
671        {return __expr_[__start_ + __i * __stride_];}
672
673    _LIBCPP_INLINE_VISIBILITY
674    size_t size() const {return __size_;}
675
676    template <class> friend class __val_expr;
677    template <class> friend class _LIBCPP_TEMPLATE_VIS valarray;
678};
679
680template <class _ValExpr>
681class __mask_expr;
682
683template <class _ValExpr>
684class __indirect_expr;
685
686template <class _ValExpr>
687class __shift_expr
688{
689    typedef typename remove_reference<_ValExpr>::type  _RmExpr;
690public:
691    typedef typename _RmExpr::value_type value_type;
692    typedef value_type result_type;
693
694private:
695    _ValExpr __expr_;
696    size_t __size_;
697    ptrdiff_t __ul_;
698    ptrdiff_t __sn_;
699    ptrdiff_t __n_;
700    static const ptrdiff_t _Np = static_cast<ptrdiff_t>(
701                                    sizeof(ptrdiff_t) * __CHAR_BIT__ - 1);
702
703    _LIBCPP_INLINE_VISIBILITY
704    __shift_expr(int __n, const _RmExpr& __e)
705        : __expr_(__e),
706          __size_(__e.size()),
707          __n_(__n)
708        {
709            ptrdiff_t __neg_n = static_cast<ptrdiff_t>(__n_ >> _Np);
710            __sn_ = __neg_n | static_cast<ptrdiff_t>(static_cast<size_t>(-__n_) >> _Np);
711            __ul_ = ((__size_ - __n_) & ~__neg_n) | ((__n_ + 1) & __neg_n);
712        }
713public:
714
715    _LIBCPP_INLINE_VISIBILITY
716    result_type operator[](size_t __j) const
717        {
718            ptrdiff_t __i = static_cast<ptrdiff_t>(__j);
719            ptrdiff_t __m = (__sn_ * __i - __ul_) >> _Np;
720            return (__expr_[(__i + __n_) & __m] & __m) | (value_type() & ~__m);
721        }
722
723    _LIBCPP_INLINE_VISIBILITY
724    size_t size() const {return __size_;}
725
726    template <class> friend class __val_expr;
727};
728
729template <class _ValExpr>
730class __cshift_expr
731{
732    typedef typename remove_reference<_ValExpr>::type  _RmExpr;
733public:
734    typedef typename _RmExpr::value_type value_type;
735    typedef value_type result_type;
736
737private:
738    _ValExpr __expr_;
739    size_t __size_;
740    size_t __m_;
741    size_t __o1_;
742    size_t __o2_;
743
744    _LIBCPP_INLINE_VISIBILITY
745    __cshift_expr(int __n, const _RmExpr& __e)
746        : __expr_(__e),
747          __size_(__e.size())
748        {
749            __n %= static_cast<int>(__size_);
750            if (__n >= 0)
751            {
752                __m_ = __size_ - __n;
753                __o1_ = __n;
754                __o2_ = __n - __size_;
755            }
756            else
757            {
758                __m_ = -__n;
759                __o1_ = __n + __size_;
760                __o2_ = __n;
761            }
762        }
763public:
764
765    _LIBCPP_INLINE_VISIBILITY
766    result_type operator[](size_t __i) const
767        {
768            if (__i < __m_)
769                return __expr_[__i + __o1_];
770            return __expr_[__i + __o2_];
771        }
772
773    _LIBCPP_INLINE_VISIBILITY
774    size_t size() const {return __size_;}
775
776    template <class> friend class __val_expr;
777};
778
779template<class _ValExpr>
780class __val_expr;
781
782template<class _ValExpr>
783struct __is_val_expr : false_type {};
784
785template<class _ValExpr>
786struct __is_val_expr<__val_expr<_ValExpr> > : true_type {};
787
788template<class _Tp>
789struct __is_val_expr<valarray<_Tp> > : true_type {};
790
791template<class _Tp>
792class _LIBCPP_TEMPLATE_VIS valarray
793{
794public:
795    typedef _Tp value_type;
796    typedef _Tp result_type;
797
798private:
799    value_type* __begin_;
800    value_type* __end_;
801
802public:
803    // construct/destroy:
804    _LIBCPP_INLINE_VISIBILITY
805    valarray() : __begin_(0), __end_(0) {}
806    inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1
807    explicit valarray(size_t __n);
808    _LIBCPP_INLINE_VISIBILITY
809    valarray(const value_type& __x, size_t __n);
810    valarray(const value_type* __p, size_t __n);
811    valarray(const valarray& __v);
812#ifndef _LIBCPP_CXX03_LANG
813    _LIBCPP_INLINE_VISIBILITY
814    valarray(valarray&& __v) _NOEXCEPT;
815    valarray(initializer_list<value_type> __il);
816#endif  // _LIBCPP_CXX03_LANG
817    valarray(const slice_array<value_type>& __sa);
818    valarray(const gslice_array<value_type>& __ga);
819    valarray(const mask_array<value_type>& __ma);
820    valarray(const indirect_array<value_type>& __ia);
821    inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1
822    ~valarray();
823
824    // assignment:
825    valarray& operator=(const valarray& __v);
826#ifndef _LIBCPP_CXX03_LANG
827    _LIBCPP_INLINE_VISIBILITY
828    valarray& operator=(valarray&& __v) _NOEXCEPT;
829    _LIBCPP_INLINE_VISIBILITY
830    valarray& operator=(initializer_list<value_type>);
831#endif  // _LIBCPP_CXX03_LANG
832    _LIBCPP_INLINE_VISIBILITY
833    valarray& operator=(const value_type& __x);
834    _LIBCPP_INLINE_VISIBILITY
835    valarray& operator=(const slice_array<value_type>& __sa);
836    _LIBCPP_INLINE_VISIBILITY
837    valarray& operator=(const gslice_array<value_type>& __ga);
838    _LIBCPP_INLINE_VISIBILITY
839    valarray& operator=(const mask_array<value_type>& __ma);
840    _LIBCPP_INLINE_VISIBILITY
841    valarray& operator=(const indirect_array<value_type>& __ia);
842    template <class _ValExpr>
843        _LIBCPP_INLINE_VISIBILITY
844        valarray& operator=(const __val_expr<_ValExpr>& __v);
845
846    // element access:
847    _LIBCPP_INLINE_VISIBILITY
848    const value_type& operator[](size_t __i) const {return __begin_[__i];}
849
850    _LIBCPP_INLINE_VISIBILITY
851    value_type&       operator[](size_t __i)       {return __begin_[__i];}
852
853    // subset operations:
854    _LIBCPP_INLINE_VISIBILITY
855    __val_expr<__slice_expr<const valarray&> >    operator[](slice __s) const;
856    _LIBCPP_INLINE_VISIBILITY
857    slice_array<value_type>                       operator[](slice __s);
858    _LIBCPP_INLINE_VISIBILITY
859    __val_expr<__indirect_expr<const valarray&> > operator[](const gslice& __gs) const;
860    _LIBCPP_INLINE_VISIBILITY
861    gslice_array<value_type>   operator[](const gslice& __gs);
862#ifndef _LIBCPP_CXX03_LANG
863    _LIBCPP_INLINE_VISIBILITY
864    __val_expr<__indirect_expr<const valarray&> > operator[](gslice&& __gs) const;
865    _LIBCPP_INLINE_VISIBILITY
866    gslice_array<value_type>                      operator[](gslice&& __gs);
867#endif  // _LIBCPP_CXX03_LANG
868    _LIBCPP_INLINE_VISIBILITY
869    __val_expr<__mask_expr<const valarray&> >     operator[](const valarray<bool>& __vb) const;
870    _LIBCPP_INLINE_VISIBILITY
871    mask_array<value_type>                        operator[](const valarray<bool>& __vb);
872#ifndef _LIBCPP_CXX03_LANG
873    _LIBCPP_INLINE_VISIBILITY
874    __val_expr<__mask_expr<const valarray&> >     operator[](valarray<bool>&& __vb) const;
875    _LIBCPP_INLINE_VISIBILITY
876    mask_array<value_type>                        operator[](valarray<bool>&& __vb);
877#endif  // _LIBCPP_CXX03_LANG
878    _LIBCPP_INLINE_VISIBILITY
879    __val_expr<__indirect_expr<const valarray&> > operator[](const valarray<size_t>& __vs) const;
880    _LIBCPP_INLINE_VISIBILITY
881    indirect_array<value_type>                    operator[](const valarray<size_t>& __vs);
882#ifndef _LIBCPP_CXX03_LANG
883    _LIBCPP_INLINE_VISIBILITY
884    __val_expr<__indirect_expr<const valarray&> > operator[](valarray<size_t>&& __vs) const;
885    _LIBCPP_INLINE_VISIBILITY
886    indirect_array<value_type>                    operator[](valarray<size_t>&& __vs);
887#endif  // _LIBCPP_CXX03_LANG
888
889    // unary operators:
890    valarray       operator+() const;
891    valarray       operator-() const;
892    valarray       operator~() const;
893    valarray<bool> operator!() const;
894
895    // computed assignment:
896    _LIBCPP_INLINE_VISIBILITY
897    valarray& operator*= (const value_type& __x);
898    _LIBCPP_INLINE_VISIBILITY
899    valarray& operator/= (const value_type& __x);
900    _LIBCPP_INLINE_VISIBILITY
901    valarray& operator%= (const value_type& __x);
902    _LIBCPP_INLINE_VISIBILITY
903    valarray& operator+= (const value_type& __x);
904    _LIBCPP_INLINE_VISIBILITY
905    valarray& operator-= (const value_type& __x);
906    _LIBCPP_INLINE_VISIBILITY
907    valarray& operator^= (const value_type& __x);
908    _LIBCPP_INLINE_VISIBILITY
909    valarray& operator&= (const value_type& __x);
910    _LIBCPP_INLINE_VISIBILITY
911    valarray& operator|= (const value_type& __x);
912    _LIBCPP_INLINE_VISIBILITY
913    valarray& operator<<=(const value_type& __x);
914    _LIBCPP_INLINE_VISIBILITY
915    valarray& operator>>=(const value_type& __x);
916
917    template <class _Expr>
918    typename enable_if
919    <
920        __is_val_expr<_Expr>::value,
921        valarray&
922    >::type
923    _LIBCPP_INLINE_VISIBILITY
924    operator*= (const _Expr& __v);
925
926    template <class _Expr>
927    typename enable_if
928    <
929        __is_val_expr<_Expr>::value,
930        valarray&
931    >::type
932    _LIBCPP_INLINE_VISIBILITY
933    operator/= (const _Expr& __v);
934
935    template <class _Expr>
936    typename enable_if
937    <
938        __is_val_expr<_Expr>::value,
939        valarray&
940    >::type
941    _LIBCPP_INLINE_VISIBILITY
942    operator%= (const _Expr& __v);
943
944    template <class _Expr>
945    typename enable_if
946    <
947        __is_val_expr<_Expr>::value,
948        valarray&
949    >::type
950    _LIBCPP_INLINE_VISIBILITY
951    operator+= (const _Expr& __v);
952
953    template <class _Expr>
954    typename enable_if
955    <
956        __is_val_expr<_Expr>::value,
957        valarray&
958    >::type
959    _LIBCPP_INLINE_VISIBILITY
960    operator-= (const _Expr& __v);
961
962    template <class _Expr>
963    typename enable_if
964    <
965        __is_val_expr<_Expr>::value,
966        valarray&
967    >::type
968    _LIBCPP_INLINE_VISIBILITY
969    operator^= (const _Expr& __v);
970
971    template <class _Expr>
972    typename enable_if
973    <
974        __is_val_expr<_Expr>::value,
975        valarray&
976    >::type
977    _LIBCPP_INLINE_VISIBILITY
978    operator|= (const _Expr& __v);
979
980    template <class _Expr>
981    typename enable_if
982    <
983        __is_val_expr<_Expr>::value,
984        valarray&
985    >::type
986    _LIBCPP_INLINE_VISIBILITY
987    operator&= (const _Expr& __v);
988
989    template <class _Expr>
990    typename enable_if
991    <
992        __is_val_expr<_Expr>::value,
993        valarray&
994    >::type
995    _LIBCPP_INLINE_VISIBILITY
996    operator<<= (const _Expr& __v);
997
998    template <class _Expr>
999    typename enable_if
1000    <
1001        __is_val_expr<_Expr>::value,
1002        valarray&
1003    >::type
1004    _LIBCPP_INLINE_VISIBILITY
1005    operator>>= (const _Expr& __v);
1006
1007    // member functions:
1008    _LIBCPP_INLINE_VISIBILITY
1009    void swap(valarray& __v) _NOEXCEPT;
1010
1011    _LIBCPP_INLINE_VISIBILITY
1012    size_t size() const {return static_cast<size_t>(__end_ - __begin_);}
1013
1014    _LIBCPP_INLINE_VISIBILITY
1015    value_type sum() const;
1016    _LIBCPP_INLINE_VISIBILITY
1017    value_type min() const;
1018    _LIBCPP_INLINE_VISIBILITY
1019    value_type max() const;
1020
1021    valarray shift (int __i) const;
1022    valarray cshift(int __i) const;
1023    valarray apply(value_type __f(value_type)) const;
1024    valarray apply(value_type __f(const value_type&)) const;
1025    void     resize(size_t __n, value_type __x = value_type());
1026
1027private:
1028    template <class> friend class _LIBCPP_TEMPLATE_VIS valarray;
1029    template <class> friend class _LIBCPP_TEMPLATE_VIS slice_array;
1030    template <class> friend class _LIBCPP_TEMPLATE_VIS gslice_array;
1031    template <class> friend class _LIBCPP_TEMPLATE_VIS mask_array;
1032    template <class> friend class __mask_expr;
1033    template <class> friend class _LIBCPP_TEMPLATE_VIS indirect_array;
1034    template <class> friend class __indirect_expr;
1035    template <class> friend class __val_expr;
1036
1037    template <class _Up>
1038    friend
1039    _Up*
1040    begin(valarray<_Up>& __v);
1041
1042    template <class _Up>
1043    friend
1044    const _Up*
1045    begin(const valarray<_Up>& __v);
1046
1047    template <class _Up>
1048    friend
1049    _Up*
1050    end(valarray<_Up>& __v);
1051
1052    template <class _Up>
1053    friend
1054    const _Up*
1055    end(const valarray<_Up>& __v);
1056
1057    _LIBCPP_INLINE_VISIBILITY
1058    void __clear(size_t __capacity);
1059    valarray& __assign_range(const value_type* __f, const value_type* __l);
1060};
1061
1062_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void valarray<size_t>::resize(size_t, size_t))
1063
1064template <class _Op, class _Tp>
1065struct _UnaryOp<_Op, valarray<_Tp> >
1066{
1067    typedef typename _Op::result_type result_type;
1068    typedef _Tp value_type;
1069
1070    _Op __op_;
1071    const valarray<_Tp>& __a0_;
1072
1073    _LIBCPP_INLINE_VISIBILITY
1074    _UnaryOp(const _Op& __op, const valarray<_Tp>& __a0) : __op_(__op), __a0_(__a0) {}
1075
1076    _LIBCPP_INLINE_VISIBILITY
1077    result_type operator[](size_t __i) const {return __op_(__a0_[__i]);}
1078
1079    _LIBCPP_INLINE_VISIBILITY
1080    size_t size() const {return __a0_.size();}
1081};
1082
1083template <class _Op, class _Tp, class _A1>
1084struct _BinaryOp<_Op, valarray<_Tp>, _A1>
1085{
1086    typedef typename _Op::result_type result_type;
1087    typedef _Tp value_type;
1088
1089    _Op __op_;
1090    const valarray<_Tp>& __a0_;
1091    _A1 __a1_;
1092
1093    _LIBCPP_INLINE_VISIBILITY
1094    _BinaryOp(const _Op& __op, const valarray<_Tp>& __a0, const _A1& __a1)
1095        : __op_(__op), __a0_(__a0), __a1_(__a1) {}
1096
1097    _LIBCPP_INLINE_VISIBILITY
1098    value_type operator[](size_t __i) const {return __op_(__a0_[__i], __a1_[__i]);}
1099
1100    _LIBCPP_INLINE_VISIBILITY
1101    size_t size() const {return __a0_.size();}
1102};
1103
1104template <class _Op, class _A0, class _Tp>
1105struct _BinaryOp<_Op, _A0, valarray<_Tp> >
1106{
1107    typedef typename _Op::result_type result_type;
1108    typedef _Tp value_type;
1109
1110    _Op __op_;
1111    _A0 __a0_;
1112    const valarray<_Tp>& __a1_;
1113
1114    _LIBCPP_INLINE_VISIBILITY
1115    _BinaryOp(const _Op& __op, const _A0& __a0, const valarray<_Tp>& __a1)
1116        : __op_(__op), __a0_(__a0), __a1_(__a1) {}
1117
1118    _LIBCPP_INLINE_VISIBILITY
1119    value_type operator[](size_t __i) const {return __op_(__a0_[__i], __a1_[__i]);}
1120
1121    _LIBCPP_INLINE_VISIBILITY
1122    size_t size() const {return __a0_.size();}
1123};
1124
1125template <class _Op, class _Tp>
1126struct _BinaryOp<_Op, valarray<_Tp>, valarray<_Tp> >
1127{
1128    typedef typename _Op::result_type result_type;
1129    typedef _Tp value_type;
1130
1131    _Op __op_;
1132    const valarray<_Tp>& __a0_;
1133    const valarray<_Tp>& __a1_;
1134
1135    _LIBCPP_INLINE_VISIBILITY
1136    _BinaryOp(const _Op& __op, const valarray<_Tp>& __a0, const valarray<_Tp>& __a1)
1137        : __op_(__op), __a0_(__a0), __a1_(__a1) {}
1138
1139    _LIBCPP_INLINE_VISIBILITY
1140    value_type operator[](size_t __i) const {return __op_(__a0_[__i], __a1_[__i]);}
1141
1142    _LIBCPP_INLINE_VISIBILITY
1143    size_t size() const {return __a0_.size();}
1144};
1145
1146// slice_array
1147
1148template <class _Tp>
1149class _LIBCPP_TEMPLATE_VIS slice_array
1150{
1151public:
1152    typedef _Tp value_type;
1153
1154private:
1155    value_type* __vp_;
1156    size_t __size_;
1157    size_t __stride_;
1158
1159public:
1160    template <class _Expr>
1161    typename enable_if
1162    <
1163        __is_val_expr<_Expr>::value,
1164        void
1165    >::type
1166    _LIBCPP_INLINE_VISIBILITY
1167    operator=(const _Expr& __v) const;
1168
1169    template <class _Expr>
1170    typename enable_if
1171    <
1172        __is_val_expr<_Expr>::value,
1173        void
1174    >::type
1175    _LIBCPP_INLINE_VISIBILITY
1176    operator*=(const _Expr& __v) const;
1177
1178    template <class _Expr>
1179    typename enable_if
1180    <
1181        __is_val_expr<_Expr>::value,
1182        void
1183    >::type
1184    _LIBCPP_INLINE_VISIBILITY
1185    operator/=(const _Expr& __v) const;
1186
1187    template <class _Expr>
1188    typename enable_if
1189    <
1190        __is_val_expr<_Expr>::value,
1191        void
1192    >::type
1193    _LIBCPP_INLINE_VISIBILITY
1194    operator%=(const _Expr& __v) const;
1195
1196    template <class _Expr>
1197    typename enable_if
1198    <
1199        __is_val_expr<_Expr>::value,
1200        void
1201    >::type
1202    _LIBCPP_INLINE_VISIBILITY
1203    operator+=(const _Expr& __v) const;
1204
1205    template <class _Expr>
1206    typename enable_if
1207    <
1208        __is_val_expr<_Expr>::value,
1209        void
1210    >::type
1211    _LIBCPP_INLINE_VISIBILITY
1212    operator-=(const _Expr& __v) const;
1213
1214    template <class _Expr>
1215    typename enable_if
1216    <
1217        __is_val_expr<_Expr>::value,
1218        void
1219    >::type
1220    _LIBCPP_INLINE_VISIBILITY
1221    operator^=(const _Expr& __v) const;
1222
1223    template <class _Expr>
1224    typename enable_if
1225    <
1226        __is_val_expr<_Expr>::value,
1227        void
1228    >::type
1229    _LIBCPP_INLINE_VISIBILITY
1230    operator&=(const _Expr& __v) const;
1231
1232    template <class _Expr>
1233    typename enable_if
1234    <
1235        __is_val_expr<_Expr>::value,
1236        void
1237    >::type
1238    _LIBCPP_INLINE_VISIBILITY
1239    operator|=(const _Expr& __v) const;
1240
1241    template <class _Expr>
1242    typename enable_if
1243    <
1244        __is_val_expr<_Expr>::value,
1245        void
1246    >::type
1247    _LIBCPP_INLINE_VISIBILITY
1248    operator<<=(const _Expr& __v) const;
1249
1250    template <class _Expr>
1251    typename enable_if
1252    <
1253        __is_val_expr<_Expr>::value,
1254        void
1255    >::type
1256    _LIBCPP_INLINE_VISIBILITY
1257    operator>>=(const _Expr& __v) const;
1258
1259    slice_array(slice_array const&) = default;
1260
1261    _LIBCPP_INLINE_VISIBILITY
1262    const slice_array& operator=(const slice_array& __sa) const;
1263
1264    _LIBCPP_INLINE_VISIBILITY
1265    void operator=(const value_type& __x) const;
1266
1267private:
1268    _LIBCPP_INLINE_VISIBILITY
1269    slice_array(const slice& __sl, const valarray<value_type>& __v)
1270        : __vp_(const_cast<value_type*>(__v.__begin_ + __sl.start())),
1271          __size_(__sl.size()),
1272          __stride_(__sl.stride())
1273        {}
1274
1275    template <class> friend class valarray;
1276    template <class> friend class sliceExpr;
1277};
1278
1279template <class _Tp>
1280inline
1281const slice_array<_Tp>&
1282slice_array<_Tp>::operator=(const slice_array& __sa) const
1283{
1284    value_type* __t = __vp_;
1285    const value_type* __s = __sa.__vp_;
1286    for (size_t __n = __size_; __n; --__n, __t += __stride_, __s += __sa.__stride_)
1287        *__t = *__s;
1288    return *this;
1289}
1290
1291template <class _Tp>
1292template <class _Expr>
1293inline
1294typename enable_if
1295<
1296    __is_val_expr<_Expr>::value,
1297    void
1298>::type
1299slice_array<_Tp>::operator=(const _Expr& __v) const
1300{
1301    value_type* __t = __vp_;
1302    for (size_t __i = 0; __i < __size_; ++__i, __t += __stride_)
1303        *__t = __v[__i];
1304}
1305
1306template <class _Tp>
1307template <class _Expr>
1308inline
1309typename enable_if
1310<
1311    __is_val_expr<_Expr>::value,
1312    void
1313>::type
1314slice_array<_Tp>::operator*=(const _Expr& __v) const
1315{
1316    value_type* __t = __vp_;
1317    for (size_t __i = 0; __i < __size_; ++__i, __t += __stride_)
1318        *__t *= __v[__i];
1319}
1320
1321template <class _Tp>
1322template <class _Expr>
1323inline
1324typename enable_if
1325<
1326    __is_val_expr<_Expr>::value,
1327    void
1328>::type
1329slice_array<_Tp>::operator/=(const _Expr& __v) const
1330{
1331    value_type* __t = __vp_;
1332    for (size_t __i = 0; __i < __size_; ++__i, __t += __stride_)
1333        *__t /= __v[__i];
1334}
1335
1336template <class _Tp>
1337template <class _Expr>
1338inline
1339typename enable_if
1340<
1341    __is_val_expr<_Expr>::value,
1342    void
1343>::type
1344slice_array<_Tp>::operator%=(const _Expr& __v) const
1345{
1346    value_type* __t = __vp_;
1347    for (size_t __i = 0; __i < __size_; ++__i, __t += __stride_)
1348        *__t %= __v[__i];
1349}
1350
1351template <class _Tp>
1352template <class _Expr>
1353inline
1354typename enable_if
1355<
1356    __is_val_expr<_Expr>::value,
1357    void
1358>::type
1359slice_array<_Tp>::operator+=(const _Expr& __v) const
1360{
1361    value_type* __t = __vp_;
1362    for (size_t __i = 0; __i < __size_; ++__i, __t += __stride_)
1363        *__t += __v[__i];
1364}
1365
1366template <class _Tp>
1367template <class _Expr>
1368inline
1369typename enable_if
1370<
1371    __is_val_expr<_Expr>::value,
1372    void
1373>::type
1374slice_array<_Tp>::operator-=(const _Expr& __v) const
1375{
1376    value_type* __t = __vp_;
1377    for (size_t __i = 0; __i < __size_; ++__i, __t += __stride_)
1378        *__t -= __v[__i];
1379}
1380
1381template <class _Tp>
1382template <class _Expr>
1383inline
1384typename enable_if
1385<
1386    __is_val_expr<_Expr>::value,
1387    void
1388>::type
1389slice_array<_Tp>::operator^=(const _Expr& __v) const
1390{
1391    value_type* __t = __vp_;
1392    for (size_t __i = 0; __i < __size_; ++__i, __t += __stride_)
1393        *__t ^= __v[__i];
1394}
1395
1396template <class _Tp>
1397template <class _Expr>
1398inline
1399typename enable_if
1400<
1401    __is_val_expr<_Expr>::value,
1402    void
1403>::type
1404slice_array<_Tp>::operator&=(const _Expr& __v) const
1405{
1406    value_type* __t = __vp_;
1407    for (size_t __i = 0; __i < __size_; ++__i, __t += __stride_)
1408        *__t &= __v[__i];
1409}
1410
1411template <class _Tp>
1412template <class _Expr>
1413inline
1414typename enable_if
1415<
1416    __is_val_expr<_Expr>::value,
1417    void
1418>::type
1419slice_array<_Tp>::operator|=(const _Expr& __v) const
1420{
1421    value_type* __t = __vp_;
1422    for (size_t __i = 0; __i < __size_; ++__i, __t += __stride_)
1423        *__t |= __v[__i];
1424}
1425
1426template <class _Tp>
1427template <class _Expr>
1428inline
1429typename enable_if
1430<
1431    __is_val_expr<_Expr>::value,
1432    void
1433>::type
1434slice_array<_Tp>::operator<<=(const _Expr& __v) const
1435{
1436    value_type* __t = __vp_;
1437    for (size_t __i = 0; __i < __size_; ++__i, __t += __stride_)
1438        *__t <<= __v[__i];
1439}
1440
1441template <class _Tp>
1442template <class _Expr>
1443inline
1444typename enable_if
1445<
1446    __is_val_expr<_Expr>::value,
1447    void
1448>::type
1449slice_array<_Tp>::operator>>=(const _Expr& __v) const
1450{
1451    value_type* __t = __vp_;
1452    for (size_t __i = 0; __i < __size_; ++__i, __t += __stride_)
1453        *__t >>= __v[__i];
1454}
1455
1456template <class _Tp>
1457inline
1458void
1459slice_array<_Tp>::operator=(const value_type& __x) const
1460{
1461    value_type* __t = __vp_;
1462    for (size_t __n = __size_; __n; --__n, __t += __stride_)
1463        *__t = __x;
1464}
1465
1466// gslice
1467
1468class _LIBCPP_TYPE_VIS gslice
1469{
1470    valarray<size_t> __size_;
1471    valarray<size_t> __stride_;
1472    valarray<size_t> __1d_;
1473
1474public:
1475    _LIBCPP_INLINE_VISIBILITY
1476    gslice() {}
1477
1478    _LIBCPP_INLINE_VISIBILITY
1479    gslice(size_t __start, const valarray<size_t>& __size,
1480                           const valarray<size_t>& __stride)
1481        : __size_(__size),
1482          __stride_(__stride)
1483        {__init(__start);}
1484
1485#ifndef _LIBCPP_CXX03_LANG
1486
1487    _LIBCPP_INLINE_VISIBILITY
1488    gslice(size_t __start, const valarray<size_t>&  __size,
1489                                 valarray<size_t>&& __stride)
1490        : __size_(__size),
1491          __stride_(move(__stride))
1492        {__init(__start);}
1493
1494    _LIBCPP_INLINE_VISIBILITY
1495    gslice(size_t __start,       valarray<size_t>&& __size,
1496                           const valarray<size_t>&  __stride)
1497        : __size_(move(__size)),
1498          __stride_(__stride)
1499        {__init(__start);}
1500
1501    _LIBCPP_INLINE_VISIBILITY
1502    gslice(size_t __start,       valarray<size_t>&& __size,
1503                                 valarray<size_t>&& __stride)
1504        : __size_(move(__size)),
1505          __stride_(move(__stride))
1506        {__init(__start);}
1507
1508#endif  // _LIBCPP_CXX03_LANG
1509
1510    _LIBCPP_INLINE_VISIBILITY
1511    size_t           start()  const {return __1d_.size() ? __1d_[0] : 0;}
1512
1513    _LIBCPP_INLINE_VISIBILITY
1514    valarray<size_t> size()   const {return __size_;}
1515
1516    _LIBCPP_INLINE_VISIBILITY
1517    valarray<size_t> stride() const {return __stride_;}
1518
1519private:
1520    void __init(size_t __start);
1521
1522    template <class> friend class gslice_array;
1523    template <class> friend class valarray;
1524    template <class> friend class __val_expr;
1525};
1526
1527// gslice_array
1528
1529template <class _Tp>
1530class _LIBCPP_TEMPLATE_VIS gslice_array
1531{
1532public:
1533    typedef _Tp value_type;
1534
1535private:
1536    value_type*      __vp_;
1537    valarray<size_t> __1d_;
1538
1539public:
1540    template <class _Expr>
1541    typename enable_if
1542    <
1543        __is_val_expr<_Expr>::value,
1544        void
1545    >::type
1546    _LIBCPP_INLINE_VISIBILITY
1547    operator=(const _Expr& __v) const;
1548
1549    template <class _Expr>
1550    typename enable_if
1551    <
1552        __is_val_expr<_Expr>::value,
1553        void
1554    >::type
1555    _LIBCPP_INLINE_VISIBILITY
1556    operator*=(const _Expr& __v) const;
1557
1558    template <class _Expr>
1559    typename enable_if
1560    <
1561        __is_val_expr<_Expr>::value,
1562        void
1563    >::type
1564    _LIBCPP_INLINE_VISIBILITY
1565    operator/=(const _Expr& __v) const;
1566
1567    template <class _Expr>
1568    typename enable_if
1569    <
1570        __is_val_expr<_Expr>::value,
1571        void
1572    >::type
1573    _LIBCPP_INLINE_VISIBILITY
1574    operator%=(const _Expr& __v) const;
1575
1576    template <class _Expr>
1577    typename enable_if
1578    <
1579        __is_val_expr<_Expr>::value,
1580        void
1581    >::type
1582    _LIBCPP_INLINE_VISIBILITY
1583    operator+=(const _Expr& __v) const;
1584
1585    template <class _Expr>
1586    typename enable_if
1587    <
1588        __is_val_expr<_Expr>::value,
1589        void
1590    >::type
1591    _LIBCPP_INLINE_VISIBILITY
1592    operator-=(const _Expr& __v) const;
1593
1594    template <class _Expr>
1595    typename enable_if
1596    <
1597        __is_val_expr<_Expr>::value,
1598        void
1599    >::type
1600    _LIBCPP_INLINE_VISIBILITY
1601    operator^=(const _Expr& __v) const;
1602
1603    template <class _Expr>
1604    typename enable_if
1605    <
1606        __is_val_expr<_Expr>::value,
1607        void
1608    >::type
1609    _LIBCPP_INLINE_VISIBILITY
1610    operator&=(const _Expr& __v) const;
1611
1612    template <class _Expr>
1613    typename enable_if
1614    <
1615        __is_val_expr<_Expr>::value,
1616        void
1617    >::type
1618    _LIBCPP_INLINE_VISIBILITY
1619    operator|=(const _Expr& __v) const;
1620
1621    template <class _Expr>
1622    typename enable_if
1623    <
1624        __is_val_expr<_Expr>::value,
1625        void
1626    >::type
1627    _LIBCPP_INLINE_VISIBILITY
1628    operator<<=(const _Expr& __v) const;
1629
1630    template <class _Expr>
1631    typename enable_if
1632    <
1633        __is_val_expr<_Expr>::value,
1634        void
1635    >::type
1636    _LIBCPP_INLINE_VISIBILITY
1637    operator>>=(const _Expr& __v) const;
1638
1639    _LIBCPP_INLINE_VISIBILITY
1640    const gslice_array& operator=(const gslice_array& __ga) const;
1641
1642    _LIBCPP_INLINE_VISIBILITY
1643    void operator=(const value_type& __x) const;
1644
1645    gslice_array(const gslice_array&)            = default;
1646
1647private:
1648    gslice_array(const gslice& __gs, const valarray<value_type>& __v)
1649        : __vp_(const_cast<value_type*>(__v.__begin_)),
1650          __1d_(__gs.__1d_)
1651        {}
1652
1653#ifndef _LIBCPP_CXX03_LANG
1654    gslice_array(gslice&& __gs, const valarray<value_type>& __v)
1655        : __vp_(const_cast<value_type*>(__v.__begin_)),
1656          __1d_(move(__gs.__1d_))
1657        {}
1658#endif  // _LIBCPP_CXX03_LANG
1659
1660    template <class> friend class valarray;
1661};
1662
1663template <class _Tp>
1664template <class _Expr>
1665inline
1666typename enable_if
1667<
1668    __is_val_expr<_Expr>::value,
1669    void
1670>::type
1671gslice_array<_Tp>::operator=(const _Expr& __v) const
1672{
1673    typedef const size_t* _Ip;
1674    size_t __j = 0;
1675    for (_Ip __i = __1d_.__begin_, __e = __1d_.__end_; __i != __e; ++__i, ++__j)
1676        __vp_[*__i] = __v[__j];
1677}
1678
1679template <class _Tp>
1680template <class _Expr>
1681inline
1682typename enable_if
1683<
1684    __is_val_expr<_Expr>::value,
1685    void
1686>::type
1687gslice_array<_Tp>::operator*=(const _Expr& __v) const
1688{
1689    typedef const size_t* _Ip;
1690    size_t __j = 0;
1691    for (_Ip __i = __1d_.__begin_, __e = __1d_.__end_; __i != __e; ++__i, ++__j)
1692        __vp_[*__i] *= __v[__j];
1693}
1694
1695template <class _Tp>
1696template <class _Expr>
1697inline
1698typename enable_if
1699<
1700    __is_val_expr<_Expr>::value,
1701    void
1702>::type
1703gslice_array<_Tp>::operator/=(const _Expr& __v) const
1704{
1705    typedef const size_t* _Ip;
1706    size_t __j = 0;
1707    for (_Ip __i = __1d_.__begin_, __e = __1d_.__end_; __i != __e; ++__i, ++__j)
1708        __vp_[*__i] /= __v[__j];
1709}
1710
1711template <class _Tp>
1712template <class _Expr>
1713inline
1714typename enable_if
1715<
1716    __is_val_expr<_Expr>::value,
1717    void
1718>::type
1719gslice_array<_Tp>::operator%=(const _Expr& __v) const
1720{
1721    typedef const size_t* _Ip;
1722    size_t __j = 0;
1723    for (_Ip __i = __1d_.__begin_, __e = __1d_.__end_; __i != __e; ++__i, ++__j)
1724        __vp_[*__i] %= __v[__j];
1725}
1726
1727template <class _Tp>
1728template <class _Expr>
1729inline
1730typename enable_if
1731<
1732    __is_val_expr<_Expr>::value,
1733    void
1734>::type
1735gslice_array<_Tp>::operator+=(const _Expr& __v) const
1736{
1737    typedef const size_t* _Ip;
1738    size_t __j = 0;
1739    for (_Ip __i = __1d_.__begin_, __e = __1d_.__end_; __i != __e; ++__i, ++__j)
1740        __vp_[*__i] += __v[__j];
1741}
1742
1743template <class _Tp>
1744template <class _Expr>
1745inline
1746typename enable_if
1747<
1748    __is_val_expr<_Expr>::value,
1749    void
1750>::type
1751gslice_array<_Tp>::operator-=(const _Expr& __v) const
1752{
1753    typedef const size_t* _Ip;
1754    size_t __j = 0;
1755    for (_Ip __i = __1d_.__begin_, __e = __1d_.__end_; __i != __e; ++__i, ++__j)
1756        __vp_[*__i] -= __v[__j];
1757}
1758
1759template <class _Tp>
1760template <class _Expr>
1761inline
1762typename enable_if
1763<
1764    __is_val_expr<_Expr>::value,
1765    void
1766>::type
1767gslice_array<_Tp>::operator^=(const _Expr& __v) const
1768{
1769    typedef const size_t* _Ip;
1770    size_t __j = 0;
1771    for (_Ip __i = __1d_.__begin_, __e = __1d_.__end_; __i != __e; ++__i, ++__j)
1772        __vp_[*__i] ^= __v[__j];
1773}
1774
1775template <class _Tp>
1776template <class _Expr>
1777inline
1778typename enable_if
1779<
1780    __is_val_expr<_Expr>::value,
1781    void
1782>::type
1783gslice_array<_Tp>::operator&=(const _Expr& __v) const
1784{
1785    typedef const size_t* _Ip;
1786    size_t __j = 0;
1787    for (_Ip __i = __1d_.__begin_, __e = __1d_.__end_; __i != __e; ++__i, ++__j)
1788        __vp_[*__i] &= __v[__j];
1789}
1790
1791template <class _Tp>
1792template <class _Expr>
1793inline
1794typename enable_if
1795<
1796    __is_val_expr<_Expr>::value,
1797    void
1798>::type
1799gslice_array<_Tp>::operator|=(const _Expr& __v) const
1800{
1801    typedef const size_t* _Ip;
1802    size_t __j = 0;
1803    for (_Ip __i = __1d_.__begin_, __e = __1d_.__end_; __i != __e; ++__i, ++__j)
1804        __vp_[*__i] |= __v[__j];
1805}
1806
1807template <class _Tp>
1808template <class _Expr>
1809inline
1810typename enable_if
1811<
1812    __is_val_expr<_Expr>::value,
1813    void
1814>::type
1815gslice_array<_Tp>::operator<<=(const _Expr& __v) const
1816{
1817    typedef const size_t* _Ip;
1818    size_t __j = 0;
1819    for (_Ip __i = __1d_.__begin_, __e = __1d_.__end_; __i != __e; ++__i, ++__j)
1820        __vp_[*__i] <<= __v[__j];
1821}
1822
1823template <class _Tp>
1824template <class _Expr>
1825inline
1826typename enable_if
1827<
1828    __is_val_expr<_Expr>::value,
1829    void
1830>::type
1831gslice_array<_Tp>::operator>>=(const _Expr& __v) const
1832{
1833    typedef const size_t* _Ip;
1834    size_t __j = 0;
1835    for (_Ip __i = __1d_.__begin_, __e = __1d_.__end_; __i != __e; ++__i, ++__j)
1836        __vp_[*__i] >>= __v[__j];
1837}
1838
1839template <class _Tp>
1840inline
1841const gslice_array<_Tp>&
1842gslice_array<_Tp>::operator=(const gslice_array& __ga) const
1843{
1844    typedef const size_t* _Ip;
1845    const value_type* __s = __ga.__vp_;
1846    for (_Ip __i = __1d_.__begin_, __e = __1d_.__end_, __j = __ga.__1d_.__begin_;
1847            __i != __e; ++__i, ++__j)
1848        __vp_[*__i] = __s[*__j];
1849    return *this;
1850}
1851
1852template <class _Tp>
1853inline
1854void
1855gslice_array<_Tp>::operator=(const value_type& __x) const
1856{
1857    typedef const size_t* _Ip;
1858    for (_Ip __i = __1d_.__begin_, __e = __1d_.__end_; __i != __e; ++__i)
1859        __vp_[*__i] = __x;
1860}
1861
1862// mask_array
1863
1864template <class _Tp>
1865class _LIBCPP_TEMPLATE_VIS mask_array
1866{
1867public:
1868    typedef _Tp value_type;
1869
1870private:
1871    value_type*      __vp_;
1872    valarray<size_t> __1d_;
1873
1874public:
1875    template <class _Expr>
1876    typename enable_if
1877    <
1878        __is_val_expr<_Expr>::value,
1879        void
1880    >::type
1881    _LIBCPP_INLINE_VISIBILITY
1882    operator=(const _Expr& __v) const;
1883
1884    template <class _Expr>
1885    typename enable_if
1886    <
1887        __is_val_expr<_Expr>::value,
1888        void
1889    >::type
1890    _LIBCPP_INLINE_VISIBILITY
1891    operator*=(const _Expr& __v) const;
1892
1893    template <class _Expr>
1894    typename enable_if
1895    <
1896        __is_val_expr<_Expr>::value,
1897        void
1898    >::type
1899    _LIBCPP_INLINE_VISIBILITY
1900    operator/=(const _Expr& __v) const;
1901
1902    template <class _Expr>
1903    typename enable_if
1904    <
1905        __is_val_expr<_Expr>::value,
1906        void
1907    >::type
1908    _LIBCPP_INLINE_VISIBILITY
1909    operator%=(const _Expr& __v) const;
1910
1911    template <class _Expr>
1912    typename enable_if
1913    <
1914        __is_val_expr<_Expr>::value,
1915        void
1916    >::type
1917    _LIBCPP_INLINE_VISIBILITY
1918    operator+=(const _Expr& __v) const;
1919
1920    template <class _Expr>
1921    typename enable_if
1922    <
1923        __is_val_expr<_Expr>::value,
1924        void
1925    >::type
1926    _LIBCPP_INLINE_VISIBILITY
1927    operator-=(const _Expr& __v) const;
1928
1929    template <class _Expr>
1930    typename enable_if
1931    <
1932        __is_val_expr<_Expr>::value,
1933        void
1934    >::type
1935    _LIBCPP_INLINE_VISIBILITY
1936    operator^=(const _Expr& __v) const;
1937
1938    template <class _Expr>
1939    typename enable_if
1940    <
1941        __is_val_expr<_Expr>::value,
1942        void
1943    >::type
1944    _LIBCPP_INLINE_VISIBILITY
1945    operator&=(const _Expr& __v) const;
1946
1947    template <class _Expr>
1948    typename enable_if
1949    <
1950        __is_val_expr<_Expr>::value,
1951        void
1952    >::type
1953    _LIBCPP_INLINE_VISIBILITY
1954    operator|=(const _Expr& __v) const;
1955
1956    template <class _Expr>
1957    typename enable_if
1958    <
1959        __is_val_expr<_Expr>::value,
1960        void
1961    >::type
1962    _LIBCPP_INLINE_VISIBILITY
1963    operator<<=(const _Expr& __v) const;
1964
1965    template <class _Expr>
1966    typename enable_if
1967    <
1968        __is_val_expr<_Expr>::value,
1969        void
1970    >::type
1971    _LIBCPP_INLINE_VISIBILITY
1972    operator>>=(const _Expr& __v) const;
1973
1974    mask_array(const mask_array&) = default;
1975
1976    _LIBCPP_INLINE_VISIBILITY
1977    const mask_array& operator=(const mask_array& __ma) const;
1978
1979    _LIBCPP_INLINE_VISIBILITY
1980    void operator=(const value_type& __x) const;
1981
1982private:
1983    _LIBCPP_INLINE_VISIBILITY
1984    mask_array(const valarray<bool>& __vb, const valarray<value_type>& __v)
1985        : __vp_(const_cast<value_type*>(__v.__begin_)),
1986          __1d_(static_cast<size_t>(count(__vb.__begin_, __vb.__end_, true)))
1987          {
1988              size_t __j = 0;
1989              for (size_t __i = 0; __i < __vb.size(); ++__i)
1990                  if (__vb[__i])
1991                      __1d_[__j++] = __i;
1992          }
1993
1994    template <class> friend class valarray;
1995};
1996
1997template <class _Tp>
1998template <class _Expr>
1999inline
2000typename enable_if
2001<
2002    __is_val_expr<_Expr>::value,
2003    void
2004>::type
2005mask_array<_Tp>::operator=(const _Expr& __v) const
2006{
2007    size_t __n = __1d_.size();
2008    for (size_t __i = 0; __i < __n; ++__i)
2009        __vp_[__1d_[__i]] = __v[__i];
2010}
2011
2012template <class _Tp>
2013template <class _Expr>
2014inline
2015typename enable_if
2016<
2017    __is_val_expr<_Expr>::value,
2018    void
2019>::type
2020mask_array<_Tp>::operator*=(const _Expr& __v) const
2021{
2022    size_t __n = __1d_.size();
2023    for (size_t __i = 0; __i < __n; ++__i)
2024        __vp_[__1d_[__i]] *= __v[__i];
2025}
2026
2027template <class _Tp>
2028template <class _Expr>
2029inline
2030typename enable_if
2031<
2032    __is_val_expr<_Expr>::value,
2033    void
2034>::type
2035mask_array<_Tp>::operator/=(const _Expr& __v) const
2036{
2037    size_t __n = __1d_.size();
2038    for (size_t __i = 0; __i < __n; ++__i)
2039        __vp_[__1d_[__i]] /= __v[__i];
2040}
2041
2042template <class _Tp>
2043template <class _Expr>
2044inline
2045typename enable_if
2046<
2047    __is_val_expr<_Expr>::value,
2048    void
2049>::type
2050mask_array<_Tp>::operator%=(const _Expr& __v) const
2051{
2052    size_t __n = __1d_.size();
2053    for (size_t __i = 0; __i < __n; ++__i)
2054        __vp_[__1d_[__i]] %= __v[__i];
2055}
2056
2057template <class _Tp>
2058template <class _Expr>
2059inline
2060typename enable_if
2061<
2062    __is_val_expr<_Expr>::value,
2063    void
2064>::type
2065mask_array<_Tp>::operator+=(const _Expr& __v) const
2066{
2067    size_t __n = __1d_.size();
2068    for (size_t __i = 0; __i < __n; ++__i)
2069        __vp_[__1d_[__i]] += __v[__i];
2070}
2071
2072template <class _Tp>
2073template <class _Expr>
2074inline
2075typename enable_if
2076<
2077    __is_val_expr<_Expr>::value,
2078    void
2079>::type
2080mask_array<_Tp>::operator-=(const _Expr& __v) const
2081{
2082    size_t __n = __1d_.size();
2083    for (size_t __i = 0; __i < __n; ++__i)
2084        __vp_[__1d_[__i]] -= __v[__i];
2085}
2086
2087template <class _Tp>
2088template <class _Expr>
2089inline
2090typename enable_if
2091<
2092    __is_val_expr<_Expr>::value,
2093    void
2094>::type
2095mask_array<_Tp>::operator^=(const _Expr& __v) const
2096{
2097    size_t __n = __1d_.size();
2098    for (size_t __i = 0; __i < __n; ++__i)
2099        __vp_[__1d_[__i]] ^= __v[__i];
2100}
2101
2102template <class _Tp>
2103template <class _Expr>
2104inline
2105typename enable_if
2106<
2107    __is_val_expr<_Expr>::value,
2108    void
2109>::type
2110mask_array<_Tp>::operator&=(const _Expr& __v) const
2111{
2112    size_t __n = __1d_.size();
2113    for (size_t __i = 0; __i < __n; ++__i)
2114        __vp_[__1d_[__i]] &= __v[__i];
2115}
2116
2117template <class _Tp>
2118template <class _Expr>
2119inline
2120typename enable_if
2121<
2122    __is_val_expr<_Expr>::value,
2123    void
2124>::type
2125mask_array<_Tp>::operator|=(const _Expr& __v) const
2126{
2127    size_t __n = __1d_.size();
2128    for (size_t __i = 0; __i < __n; ++__i)
2129        __vp_[__1d_[__i]] |= __v[__i];
2130}
2131
2132template <class _Tp>
2133template <class _Expr>
2134inline
2135typename enable_if
2136<
2137    __is_val_expr<_Expr>::value,
2138    void
2139>::type
2140mask_array<_Tp>::operator<<=(const _Expr& __v) const
2141{
2142    size_t __n = __1d_.size();
2143    for (size_t __i = 0; __i < __n; ++__i)
2144        __vp_[__1d_[__i]] <<= __v[__i];
2145}
2146
2147template <class _Tp>
2148template <class _Expr>
2149inline
2150typename enable_if
2151<
2152    __is_val_expr<_Expr>::value,
2153    void
2154>::type
2155mask_array<_Tp>::operator>>=(const _Expr& __v) const
2156{
2157    size_t __n = __1d_.size();
2158    for (size_t __i = 0; __i < __n; ++__i)
2159        __vp_[__1d_[__i]] >>= __v[__i];
2160}
2161
2162template <class _Tp>
2163inline
2164const mask_array<_Tp>&
2165mask_array<_Tp>::operator=(const mask_array& __ma) const
2166{
2167    size_t __n = __1d_.size();
2168    for (size_t __i = 0; __i < __n; ++__i)
2169        __vp_[__1d_[__i]] = __ma.__vp_[__1d_[__i]];
2170    return *this;
2171}
2172
2173template <class _Tp>
2174inline
2175void
2176mask_array<_Tp>::operator=(const value_type& __x) const
2177{
2178    size_t __n = __1d_.size();
2179    for (size_t __i = 0; __i < __n; ++__i)
2180        __vp_[__1d_[__i]] = __x;
2181}
2182
2183template <class _ValExpr>
2184class __mask_expr
2185{
2186    typedef typename remove_reference<_ValExpr>::type  _RmExpr;
2187public:
2188    typedef typename _RmExpr::value_type value_type;
2189    typedef value_type result_type;
2190
2191private:
2192    _ValExpr __expr_;
2193    valarray<size_t> __1d_;
2194
2195    _LIBCPP_INLINE_VISIBILITY
2196    __mask_expr(const valarray<bool>& __vb, const _RmExpr& __e)
2197        : __expr_(__e),
2198          __1d_(static_cast<size_t>(count(__vb.__begin_, __vb.__end_, true)))
2199          {
2200              size_t __j = 0;
2201              for (size_t __i = 0; __i < __vb.size(); ++__i)
2202                  if (__vb[__i])
2203                      __1d_[__j++] = __i;
2204          }
2205
2206public:
2207    _LIBCPP_INLINE_VISIBILITY
2208    result_type operator[](size_t __i) const
2209        {return __expr_[__1d_[__i]];}
2210
2211    _LIBCPP_INLINE_VISIBILITY
2212    size_t size() const {return __1d_.size();}
2213
2214    template <class> friend class __val_expr;
2215    template <class> friend class valarray;
2216};
2217
2218// indirect_array
2219
2220template <class _Tp>
2221class _LIBCPP_TEMPLATE_VIS indirect_array
2222{
2223public:
2224    typedef _Tp value_type;
2225
2226private:
2227    value_type*      __vp_;
2228    valarray<size_t> __1d_;
2229
2230public:
2231    template <class _Expr>
2232    typename enable_if
2233    <
2234        __is_val_expr<_Expr>::value,
2235        void
2236    >::type
2237    _LIBCPP_INLINE_VISIBILITY
2238    operator=(const _Expr& __v) const;
2239
2240    template <class _Expr>
2241    typename enable_if
2242    <
2243        __is_val_expr<_Expr>::value,
2244        void
2245    >::type
2246    _LIBCPP_INLINE_VISIBILITY
2247    operator*=(const _Expr& __v) const;
2248
2249    template <class _Expr>
2250    typename enable_if
2251    <
2252        __is_val_expr<_Expr>::value,
2253        void
2254    >::type
2255    _LIBCPP_INLINE_VISIBILITY
2256    operator/=(const _Expr& __v) const;
2257
2258    template <class _Expr>
2259    typename enable_if
2260    <
2261        __is_val_expr<_Expr>::value,
2262        void
2263    >::type
2264    _LIBCPP_INLINE_VISIBILITY
2265    operator%=(const _Expr& __v) const;
2266
2267    template <class _Expr>
2268    typename enable_if
2269    <
2270        __is_val_expr<_Expr>::value,
2271        void
2272    >::type
2273    _LIBCPP_INLINE_VISIBILITY
2274    operator+=(const _Expr& __v) const;
2275
2276    template <class _Expr>
2277    typename enable_if
2278    <
2279        __is_val_expr<_Expr>::value,
2280        void
2281    >::type
2282    _LIBCPP_INLINE_VISIBILITY
2283    operator-=(const _Expr& __v) const;
2284
2285    template <class _Expr>
2286    typename enable_if
2287    <
2288        __is_val_expr<_Expr>::value,
2289        void
2290    >::type
2291    _LIBCPP_INLINE_VISIBILITY
2292    operator^=(const _Expr& __v) const;
2293
2294    template <class _Expr>
2295    typename enable_if
2296    <
2297        __is_val_expr<_Expr>::value,
2298        void
2299    >::type
2300    _LIBCPP_INLINE_VISIBILITY
2301    operator&=(const _Expr& __v) const;
2302
2303    template <class _Expr>
2304    typename enable_if
2305    <
2306        __is_val_expr<_Expr>::value,
2307        void
2308    >::type
2309    _LIBCPP_INLINE_VISIBILITY
2310    operator|=(const _Expr& __v) const;
2311
2312    template <class _Expr>
2313    typename enable_if
2314    <
2315        __is_val_expr<_Expr>::value,
2316        void
2317    >::type
2318    _LIBCPP_INLINE_VISIBILITY
2319    operator<<=(const _Expr& __v) const;
2320
2321    template <class _Expr>
2322    typename enable_if
2323    <
2324        __is_val_expr<_Expr>::value,
2325        void
2326    >::type
2327    _LIBCPP_INLINE_VISIBILITY
2328    operator>>=(const _Expr& __v) const;
2329
2330    indirect_array(const indirect_array&) = default;
2331
2332    _LIBCPP_INLINE_VISIBILITY
2333    const indirect_array& operator=(const indirect_array& __ia) const;
2334
2335    _LIBCPP_INLINE_VISIBILITY
2336    void operator=(const value_type& __x) const;
2337
2338private:
2339     _LIBCPP_INLINE_VISIBILITY
2340   indirect_array(const valarray<size_t>& __ia, const valarray<value_type>& __v)
2341        : __vp_(const_cast<value_type*>(__v.__begin_)),
2342          __1d_(__ia)
2343        {}
2344
2345#ifndef _LIBCPP_CXX03_LANG
2346
2347    _LIBCPP_INLINE_VISIBILITY
2348    indirect_array(valarray<size_t>&& __ia, const valarray<value_type>& __v)
2349        : __vp_(const_cast<value_type*>(__v.__begin_)),
2350          __1d_(move(__ia))
2351        {}
2352
2353#endif  // _LIBCPP_CXX03_LANG
2354
2355    template <class> friend class valarray;
2356};
2357
2358template <class _Tp>
2359template <class _Expr>
2360inline
2361typename enable_if
2362<
2363    __is_val_expr<_Expr>::value,
2364    void
2365>::type
2366indirect_array<_Tp>::operator=(const _Expr& __v) const
2367{
2368    size_t __n = __1d_.size();
2369    for (size_t __i = 0; __i < __n; ++__i)
2370        __vp_[__1d_[__i]] = __v[__i];
2371}
2372
2373template <class _Tp>
2374template <class _Expr>
2375inline
2376typename enable_if
2377<
2378    __is_val_expr<_Expr>::value,
2379    void
2380>::type
2381indirect_array<_Tp>::operator*=(const _Expr& __v) const
2382{
2383    size_t __n = __1d_.size();
2384    for (size_t __i = 0; __i < __n; ++__i)
2385        __vp_[__1d_[__i]] *= __v[__i];
2386}
2387
2388template <class _Tp>
2389template <class _Expr>
2390inline
2391typename enable_if
2392<
2393    __is_val_expr<_Expr>::value,
2394    void
2395>::type
2396indirect_array<_Tp>::operator/=(const _Expr& __v) const
2397{
2398    size_t __n = __1d_.size();
2399    for (size_t __i = 0; __i < __n; ++__i)
2400        __vp_[__1d_[__i]] /= __v[__i];
2401}
2402
2403template <class _Tp>
2404template <class _Expr>
2405inline
2406typename enable_if
2407<
2408    __is_val_expr<_Expr>::value,
2409    void
2410>::type
2411indirect_array<_Tp>::operator%=(const _Expr& __v) const
2412{
2413    size_t __n = __1d_.size();
2414    for (size_t __i = 0; __i < __n; ++__i)
2415        __vp_[__1d_[__i]] %= __v[__i];
2416}
2417
2418template <class _Tp>
2419template <class _Expr>
2420inline
2421typename enable_if
2422<
2423    __is_val_expr<_Expr>::value,
2424    void
2425>::type
2426indirect_array<_Tp>::operator+=(const _Expr& __v) const
2427{
2428    size_t __n = __1d_.size();
2429    for (size_t __i = 0; __i < __n; ++__i)
2430        __vp_[__1d_[__i]] += __v[__i];
2431}
2432
2433template <class _Tp>
2434template <class _Expr>
2435inline
2436typename enable_if
2437<
2438    __is_val_expr<_Expr>::value,
2439    void
2440>::type
2441indirect_array<_Tp>::operator-=(const _Expr& __v) const
2442{
2443    size_t __n = __1d_.size();
2444    for (size_t __i = 0; __i < __n; ++__i)
2445        __vp_[__1d_[__i]] -= __v[__i];
2446}
2447
2448template <class _Tp>
2449template <class _Expr>
2450inline
2451typename enable_if
2452<
2453    __is_val_expr<_Expr>::value,
2454    void
2455>::type
2456indirect_array<_Tp>::operator^=(const _Expr& __v) const
2457{
2458    size_t __n = __1d_.size();
2459    for (size_t __i = 0; __i < __n; ++__i)
2460        __vp_[__1d_[__i]] ^= __v[__i];
2461}
2462
2463template <class _Tp>
2464template <class _Expr>
2465inline
2466typename enable_if
2467<
2468    __is_val_expr<_Expr>::value,
2469    void
2470>::type
2471indirect_array<_Tp>::operator&=(const _Expr& __v) const
2472{
2473    size_t __n = __1d_.size();
2474    for (size_t __i = 0; __i < __n; ++__i)
2475        __vp_[__1d_[__i]] &= __v[__i];
2476}
2477
2478template <class _Tp>
2479template <class _Expr>
2480inline
2481typename enable_if
2482<
2483    __is_val_expr<_Expr>::value,
2484    void
2485>::type
2486indirect_array<_Tp>::operator|=(const _Expr& __v) const
2487{
2488    size_t __n = __1d_.size();
2489    for (size_t __i = 0; __i < __n; ++__i)
2490        __vp_[__1d_[__i]] |= __v[__i];
2491}
2492
2493template <class _Tp>
2494template <class _Expr>
2495inline
2496typename enable_if
2497<
2498    __is_val_expr<_Expr>::value,
2499    void
2500>::type
2501indirect_array<_Tp>::operator<<=(const _Expr& __v) const
2502{
2503    size_t __n = __1d_.size();
2504    for (size_t __i = 0; __i < __n; ++__i)
2505        __vp_[__1d_[__i]] <<= __v[__i];
2506}
2507
2508template <class _Tp>
2509template <class _Expr>
2510inline
2511typename enable_if
2512<
2513    __is_val_expr<_Expr>::value,
2514    void
2515>::type
2516indirect_array<_Tp>::operator>>=(const _Expr& __v) const
2517{
2518    size_t __n = __1d_.size();
2519    for (size_t __i = 0; __i < __n; ++__i)
2520        __vp_[__1d_[__i]] >>= __v[__i];
2521}
2522
2523template <class _Tp>
2524inline
2525const indirect_array<_Tp>&
2526indirect_array<_Tp>::operator=(const indirect_array& __ia) const
2527{
2528    typedef const size_t* _Ip;
2529    const value_type* __s = __ia.__vp_;
2530    for (_Ip __i = __1d_.__begin_, __e = __1d_.__end_, __j = __ia.__1d_.__begin_;
2531            __i != __e; ++__i, ++__j)
2532        __vp_[*__i] = __s[*__j];
2533    return *this;
2534}
2535
2536template <class _Tp>
2537inline
2538void
2539indirect_array<_Tp>::operator=(const value_type& __x) const
2540{
2541    typedef const size_t* _Ip;
2542    for (_Ip __i = __1d_.__begin_, __e = __1d_.__end_; __i != __e; ++__i)
2543        __vp_[*__i] = __x;
2544}
2545
2546template <class _ValExpr>
2547class __indirect_expr
2548{
2549    typedef typename remove_reference<_ValExpr>::type  _RmExpr;
2550public:
2551    typedef typename _RmExpr::value_type value_type;
2552    typedef value_type result_type;
2553
2554private:
2555    _ValExpr __expr_;
2556    valarray<size_t> __1d_;
2557
2558    _LIBCPP_INLINE_VISIBILITY
2559    __indirect_expr(const valarray<size_t>& __ia, const _RmExpr& __e)
2560        : __expr_(__e),
2561          __1d_(__ia)
2562          {}
2563
2564#ifndef _LIBCPP_CXX03_LANG
2565
2566    _LIBCPP_INLINE_VISIBILITY
2567    __indirect_expr(valarray<size_t>&& __ia, const _RmExpr& __e)
2568        : __expr_(__e),
2569          __1d_(move(__ia))
2570          {}
2571
2572#endif  // _LIBCPP_CXX03_LANG
2573
2574public:
2575    _LIBCPP_INLINE_VISIBILITY
2576    result_type operator[](size_t __i) const
2577        {return __expr_[__1d_[__i]];}
2578
2579    _LIBCPP_INLINE_VISIBILITY
2580    size_t size() const {return __1d_.size();}
2581
2582    template <class> friend class __val_expr;
2583    template <class> friend class _LIBCPP_TEMPLATE_VIS valarray;
2584};
2585
2586template<class _ValExpr>
2587class __val_expr
2588{
2589    typedef typename remove_reference<_ValExpr>::type  _RmExpr;
2590
2591    _ValExpr __expr_;
2592public:
2593    typedef typename _RmExpr::value_type value_type;
2594    typedef typename _RmExpr::result_type result_type;
2595
2596    _LIBCPP_INLINE_VISIBILITY
2597    explicit __val_expr(const _RmExpr& __e) : __expr_(__e) {}
2598
2599    _LIBCPP_INLINE_VISIBILITY
2600    result_type operator[](size_t __i) const
2601        {return __expr_[__i];}
2602
2603    _LIBCPP_INLINE_VISIBILITY
2604    __val_expr<__slice_expr<_ValExpr> > operator[](slice __s) const
2605    {
2606        typedef __slice_expr<_ValExpr> _NewExpr;
2607        return __val_expr< _NewExpr >(_NewExpr(__s, __expr_));
2608    }
2609
2610    _LIBCPP_INLINE_VISIBILITY
2611    __val_expr<__indirect_expr<_ValExpr> > operator[](const gslice& __gs) const
2612    {
2613        typedef __indirect_expr<_ValExpr> _NewExpr;
2614        return __val_expr<_NewExpr >(_NewExpr(__gs.__1d_, __expr_));
2615    }
2616
2617    _LIBCPP_INLINE_VISIBILITY
2618    __val_expr<__mask_expr<_ValExpr> > operator[](const valarray<bool>& __vb) const
2619    {
2620        typedef __mask_expr<_ValExpr> _NewExpr;
2621        return __val_expr< _NewExpr >( _NewExpr(__vb, __expr_));
2622    }
2623
2624    _LIBCPP_INLINE_VISIBILITY
2625    __val_expr<__indirect_expr<_ValExpr> > operator[](const valarray<size_t>& __vs) const
2626    {
2627        typedef __indirect_expr<_ValExpr> _NewExpr;
2628        return __val_expr< _NewExpr >(_NewExpr(__vs, __expr_));
2629    }
2630
2631    _LIBCPP_INLINE_VISIBILITY
2632    __val_expr<_UnaryOp<__unary_plus<value_type>, _ValExpr> >
2633    operator+() const
2634    {
2635        typedef _UnaryOp<__unary_plus<value_type>, _ValExpr> _NewExpr;
2636        return __val_expr<_NewExpr>(_NewExpr(__unary_plus<value_type>(), __expr_));
2637    }
2638
2639    _LIBCPP_INLINE_VISIBILITY
2640    __val_expr<_UnaryOp<negate<value_type>, _ValExpr> >
2641    operator-() const
2642    {
2643        typedef _UnaryOp<negate<value_type>, _ValExpr> _NewExpr;
2644        return __val_expr<_NewExpr>(_NewExpr(negate<value_type>(), __expr_));
2645    }
2646
2647    _LIBCPP_INLINE_VISIBILITY
2648    __val_expr<_UnaryOp<__bit_not<value_type>, _ValExpr> >
2649    operator~() const
2650    {
2651        typedef _UnaryOp<__bit_not<value_type>, _ValExpr> _NewExpr;
2652        return __val_expr<_NewExpr>(_NewExpr(__bit_not<value_type>(), __expr_));
2653    }
2654
2655    _LIBCPP_INLINE_VISIBILITY
2656    __val_expr<_UnaryOp<logical_not<value_type>, _ValExpr> >
2657    operator!() const
2658    {
2659        typedef _UnaryOp<logical_not<value_type>, _ValExpr> _NewExpr;
2660        return __val_expr<_NewExpr>(_NewExpr(logical_not<value_type>(), __expr_));
2661    }
2662
2663    operator valarray<result_type>() const;
2664
2665    _LIBCPP_INLINE_VISIBILITY
2666    size_t size() const {return __expr_.size();}
2667
2668    _LIBCPP_INLINE_VISIBILITY
2669    result_type sum() const
2670    {
2671        size_t __n = __expr_.size();
2672        result_type __r = __n ? __expr_[0] : result_type();
2673        for (size_t __i = 1; __i < __n; ++__i)
2674            __r += __expr_[__i];
2675        return __r;
2676    }
2677
2678    _LIBCPP_INLINE_VISIBILITY
2679    result_type min() const
2680    {
2681        size_t __n = size();
2682        result_type __r = __n ? (*this)[0] : result_type();
2683        for (size_t __i = 1; __i < __n; ++__i)
2684        {
2685            result_type __x = __expr_[__i];
2686            if (__x < __r)
2687                __r = __x;
2688        }
2689        return __r;
2690    }
2691
2692    _LIBCPP_INLINE_VISIBILITY
2693    result_type max() const
2694    {
2695        size_t __n = size();
2696        result_type __r = __n ? (*this)[0] : result_type();
2697        for (size_t __i = 1; __i < __n; ++__i)
2698        {
2699            result_type __x = __expr_[__i];
2700            if (__r < __x)
2701                __r = __x;
2702        }
2703        return __r;
2704    }
2705
2706    _LIBCPP_INLINE_VISIBILITY
2707    __val_expr<__shift_expr<_ValExpr> > shift (int __i) const
2708        {return __val_expr<__shift_expr<_ValExpr> >(__shift_expr<_ValExpr>(__i, __expr_));}
2709
2710    _LIBCPP_INLINE_VISIBILITY
2711    __val_expr<__cshift_expr<_ValExpr> > cshift(int __i) const
2712        {return __val_expr<__cshift_expr<_ValExpr> >(__cshift_expr<_ValExpr>(__i, __expr_));}
2713
2714    _LIBCPP_INLINE_VISIBILITY
2715    __val_expr<_UnaryOp<__apply_expr<value_type, value_type(*)(value_type)>, _ValExpr> >
2716    apply(value_type __f(value_type)) const
2717    {
2718        typedef __apply_expr<value_type, value_type(*)(value_type)> _Op;
2719        typedef _UnaryOp<_Op, _ValExpr> _NewExpr;
2720        return __val_expr<_NewExpr>(_NewExpr(_Op(__f), __expr_));
2721    }
2722
2723    _LIBCPP_INLINE_VISIBILITY
2724    __val_expr<_UnaryOp<__apply_expr<value_type, value_type(*)(const value_type&)>, _ValExpr> >
2725    apply(value_type __f(const value_type&)) const
2726    {
2727        typedef __apply_expr<value_type, value_type(*)(const value_type&)> _Op;
2728        typedef _UnaryOp<_Op, _ValExpr> _NewExpr;
2729        return __val_expr<_NewExpr>(_NewExpr(_Op(__f), __expr_));
2730    }
2731};
2732
2733template<class _ValExpr>
2734__val_expr<_ValExpr>::operator valarray<__val_expr::result_type>() const
2735{
2736    valarray<result_type> __r;
2737    size_t __n = __expr_.size();
2738    if (__n)
2739    {
2740        __r.__begin_ =
2741            __r.__end_ =
2742                static_cast<result_type*>(
2743                    _VSTD::__libcpp_allocate(__n * sizeof(result_type), _LIBCPP_ALIGNOF(result_type)));
2744        for (size_t __i = 0; __i != __n; ++__r.__end_, ++__i)
2745            ::new (__r.__end_) result_type(__expr_[__i]);
2746    }
2747    return __r;
2748}
2749
2750// valarray
2751
2752template <class _Tp>
2753inline
2754valarray<_Tp>::valarray(size_t __n)
2755    : __begin_(0),
2756      __end_(0)
2757{
2758    if (__n)
2759    {
2760        __begin_ = __end_ = static_cast<value_type*>(
2761            _VSTD::__libcpp_allocate(__n * sizeof(value_type), _LIBCPP_ALIGNOF(value_type)));
2762#ifndef _LIBCPP_NO_EXCEPTIONS
2763        try
2764        {
2765#endif  // _LIBCPP_NO_EXCEPTIONS
2766            for (size_t __n_left = __n; __n_left; --__n_left, ++__end_)
2767                ::new (__end_) value_type();
2768#ifndef _LIBCPP_NO_EXCEPTIONS
2769        }
2770        catch (...)
2771        {
2772            __clear(__n);
2773            throw;
2774        }
2775#endif  // _LIBCPP_NO_EXCEPTIONS
2776    }
2777}
2778
2779template <class _Tp>
2780inline
2781valarray<_Tp>::valarray(const value_type& __x, size_t __n)
2782    : __begin_(0),
2783      __end_(0)
2784{
2785    resize(__n, __x);
2786}
2787
2788template <class _Tp>
2789valarray<_Tp>::valarray(const value_type* __p, size_t __n)
2790    : __begin_(0),
2791      __end_(0)
2792{
2793    if (__n)
2794    {
2795        __begin_ = __end_ = static_cast<value_type*>(
2796            _VSTD::__libcpp_allocate(__n * sizeof(value_type), _LIBCPP_ALIGNOF(value_type)));
2797#ifndef _LIBCPP_NO_EXCEPTIONS
2798        try
2799        {
2800#endif  // _LIBCPP_NO_EXCEPTIONS
2801            for (size_t __n_left = __n; __n_left; ++__end_, ++__p, --__n_left)
2802                ::new (__end_) value_type(*__p);
2803#ifndef _LIBCPP_NO_EXCEPTIONS
2804        }
2805        catch (...)
2806        {
2807            __clear(__n);
2808            throw;
2809        }
2810#endif  // _LIBCPP_NO_EXCEPTIONS
2811    }
2812}
2813
2814template <class _Tp>
2815valarray<_Tp>::valarray(const valarray& __v)
2816    : __begin_(0),
2817      __end_(0)
2818{
2819    if (__v.size())
2820    {
2821        __begin_ = __end_ = static_cast<value_type*>(
2822            _VSTD::__libcpp_allocate(__v.size() * sizeof(value_type), _LIBCPP_ALIGNOF(value_type)));
2823#ifndef _LIBCPP_NO_EXCEPTIONS
2824        try
2825        {
2826#endif  // _LIBCPP_NO_EXCEPTIONS
2827            for (value_type* __p = __v.__begin_; __p != __v.__end_; ++__end_, ++__p)
2828                ::new (__end_) value_type(*__p);
2829#ifndef _LIBCPP_NO_EXCEPTIONS
2830        }
2831        catch (...)
2832        {
2833            __clear(__v.size());
2834            throw;
2835        }
2836#endif  // _LIBCPP_NO_EXCEPTIONS
2837    }
2838}
2839
2840#ifndef _LIBCPP_CXX03_LANG
2841
2842template <class _Tp>
2843inline
2844valarray<_Tp>::valarray(valarray&& __v) _NOEXCEPT
2845    : __begin_(__v.__begin_),
2846      __end_(__v.__end_)
2847{
2848    __v.__begin_ = __v.__end_ = nullptr;
2849}
2850
2851template <class _Tp>
2852valarray<_Tp>::valarray(initializer_list<value_type> __il)
2853    : __begin_(0),
2854      __end_(0)
2855{
2856    const size_t __n = __il.size();
2857    if (__n)
2858    {
2859        __begin_ = __end_ = static_cast<value_type*>(
2860_VSTD::__libcpp_allocate(__n * sizeof(value_type), _LIBCPP_ALIGNOF(value_type)));
2861#ifndef _LIBCPP_NO_EXCEPTIONS
2862        try
2863        {
2864#endif  // _LIBCPP_NO_EXCEPTIONS
2865            size_t __n_left = __n;
2866            for (const value_type* __p = __il.begin(); __n_left; ++__end_, ++__p, --__n_left)
2867                ::new (__end_) value_type(*__p);
2868#ifndef _LIBCPP_NO_EXCEPTIONS
2869        }
2870        catch (...)
2871        {
2872            __clear(__n);
2873            throw;
2874        }
2875#endif  // _LIBCPP_NO_EXCEPTIONS
2876    }
2877}
2878
2879#endif  // _LIBCPP_CXX03_LANG
2880
2881template <class _Tp>
2882valarray<_Tp>::valarray(const slice_array<value_type>& __sa)
2883    : __begin_(0),
2884      __end_(0)
2885{
2886    const size_t __n = __sa.__size_;
2887    if (__n)
2888    {
2889        __begin_ = __end_ = static_cast<value_type*>(
2890          _VSTD::__libcpp_allocate(__n * sizeof(value_type), _LIBCPP_ALIGNOF(value_type)));
2891#ifndef _LIBCPP_NO_EXCEPTIONS
2892        try
2893        {
2894#endif  // _LIBCPP_NO_EXCEPTIONS
2895            size_t __n_left = __n;
2896            for (const value_type* __p = __sa.__vp_; __n_left; ++__end_, __p += __sa.__stride_, --__n_left)
2897                ::new (__end_) value_type(*__p);
2898#ifndef _LIBCPP_NO_EXCEPTIONS
2899        }
2900        catch (...)
2901        {
2902            __clear(__n);
2903            throw;
2904        }
2905#endif  // _LIBCPP_NO_EXCEPTIONS
2906    }
2907}
2908
2909template <class _Tp>
2910valarray<_Tp>::valarray(const gslice_array<value_type>& __ga)
2911    : __begin_(0),
2912      __end_(0)
2913{
2914    const size_t __n = __ga.__1d_.size();
2915    if (__n)
2916    {
2917        __begin_ = __end_ = static_cast<value_type*>(
2918           _VSTD::__libcpp_allocate(__n * sizeof(value_type), _LIBCPP_ALIGNOF(value_type)));
2919#ifndef _LIBCPP_NO_EXCEPTIONS
2920        try
2921        {
2922#endif  // _LIBCPP_NO_EXCEPTIONS
2923            typedef const size_t* _Ip;
2924            const value_type* __s = __ga.__vp_;
2925            for (_Ip __i = __ga.__1d_.__begin_, __e = __ga.__1d_.__end_;
2926                    __i != __e; ++__i, ++__end_)
2927                ::new (__end_) value_type(__s[*__i]);
2928#ifndef _LIBCPP_NO_EXCEPTIONS
2929        }
2930        catch (...)
2931        {
2932            __clear(__n);
2933            throw;
2934        }
2935#endif  // _LIBCPP_NO_EXCEPTIONS
2936    }
2937}
2938
2939template <class _Tp>
2940valarray<_Tp>::valarray(const mask_array<value_type>& __ma)
2941    : __begin_(0),
2942      __end_(0)
2943{
2944    const size_t __n = __ma.__1d_.size();
2945    if (__n)
2946    {
2947        __begin_ = __end_ = static_cast<value_type*>(
2948           _VSTD::__libcpp_allocate(__n * sizeof(value_type), _LIBCPP_ALIGNOF(value_type)));
2949#ifndef _LIBCPP_NO_EXCEPTIONS
2950        try
2951        {
2952#endif  // _LIBCPP_NO_EXCEPTIONS
2953            typedef const size_t* _Ip;
2954            const value_type* __s = __ma.__vp_;
2955            for (_Ip __i = __ma.__1d_.__begin_, __e = __ma.__1d_.__end_;
2956                    __i != __e; ++__i, ++__end_)
2957                ::new (__end_) value_type(__s[*__i]);
2958#ifndef _LIBCPP_NO_EXCEPTIONS
2959        }
2960        catch (...)
2961        {
2962            __clear(__n);
2963            throw;
2964        }
2965#endif  // _LIBCPP_NO_EXCEPTIONS
2966    }
2967}
2968
2969template <class _Tp>
2970valarray<_Tp>::valarray(const indirect_array<value_type>& __ia)
2971    : __begin_(0),
2972      __end_(0)
2973{
2974    const size_t __n = __ia.__1d_.size();
2975    if (__n)
2976    {
2977        __begin_ = __end_ = static_cast<value_type*>(
2978           _VSTD::__libcpp_allocate(__n * sizeof(value_type), _LIBCPP_ALIGNOF(value_type)));
2979#ifndef _LIBCPP_NO_EXCEPTIONS
2980        try
2981        {
2982#endif  // _LIBCPP_NO_EXCEPTIONS
2983            typedef const size_t* _Ip;
2984            const value_type* __s = __ia.__vp_;
2985            for (_Ip __i = __ia.__1d_.__begin_, __e = __ia.__1d_.__end_;
2986                    __i != __e; ++__i, ++__end_)
2987                ::new (__end_) value_type(__s[*__i]);
2988#ifndef _LIBCPP_NO_EXCEPTIONS
2989        }
2990        catch (...)
2991        {
2992            __clear(__n);
2993            throw;
2994        }
2995#endif  // _LIBCPP_NO_EXCEPTIONS
2996    }
2997}
2998
2999template <class _Tp>
3000inline
3001valarray<_Tp>::~valarray()
3002{
3003    __clear(size());
3004}
3005
3006template <class _Tp>
3007valarray<_Tp>&
3008valarray<_Tp>::__assign_range(const value_type* __f, const value_type* __l)
3009{
3010    size_t __n = __l - __f;
3011    if (size() != __n)
3012    {
3013        __clear(size());
3014        __begin_ = static_cast<value_type*>(
3015           _VSTD::__libcpp_allocate(__n * sizeof(value_type), _LIBCPP_ALIGNOF(value_type)));
3016        __end_ = __begin_ + __n;
3017        _VSTD::uninitialized_copy(__f, __l, __begin_);
3018    } else {
3019        _VSTD::copy(__f, __l, __begin_);
3020    }
3021    return *this;
3022}
3023
3024template <class _Tp>
3025valarray<_Tp>&
3026valarray<_Tp>::operator=(const valarray& __v)
3027{
3028    if (this != &__v)
3029        return __assign_range(__v.__begin_, __v.__end_);
3030    return *this;
3031}
3032
3033#ifndef _LIBCPP_CXX03_LANG
3034
3035template <class _Tp>
3036inline
3037valarray<_Tp>&
3038valarray<_Tp>::operator=(valarray&& __v) _NOEXCEPT
3039{
3040    __clear(size());
3041    __begin_ = __v.__begin_;
3042    __end_ = __v.__end_;
3043    __v.__begin_ = nullptr;
3044    __v.__end_ = nullptr;
3045    return *this;
3046}
3047
3048template <class _Tp>
3049inline
3050valarray<_Tp>&
3051valarray<_Tp>::operator=(initializer_list<value_type> __il)
3052{
3053    return __assign_range(__il.begin(), __il.end());
3054}
3055
3056#endif  // _LIBCPP_CXX03_LANG
3057
3058template <class _Tp>
3059inline
3060valarray<_Tp>&
3061valarray<_Tp>::operator=(const value_type& __x)
3062{
3063    _VSTD::fill(__begin_, __end_, __x);
3064    return *this;
3065}
3066
3067template <class _Tp>
3068inline
3069valarray<_Tp>&
3070valarray<_Tp>::operator=(const slice_array<value_type>& __sa)
3071{
3072    value_type* __t = __begin_;
3073    const value_type* __s = __sa.__vp_;
3074    for (size_t __n = __sa.__size_; __n; --__n, __s += __sa.__stride_, ++__t)
3075        *__t = *__s;
3076    return *this;
3077}
3078
3079template <class _Tp>
3080inline
3081valarray<_Tp>&
3082valarray<_Tp>::operator=(const gslice_array<value_type>& __ga)
3083{
3084    typedef const size_t* _Ip;
3085    value_type* __t = __begin_;
3086    const value_type* __s = __ga.__vp_;
3087    for (_Ip __i = __ga.__1d_.__begin_, __e = __ga.__1d_.__end_;
3088                    __i != __e; ++__i, ++__t)
3089        *__t = __s[*__i];
3090    return *this;
3091}
3092
3093template <class _Tp>
3094inline
3095valarray<_Tp>&
3096valarray<_Tp>::operator=(const mask_array<value_type>& __ma)
3097{
3098    typedef const size_t* _Ip;
3099    value_type* __t = __begin_;
3100    const value_type* __s = __ma.__vp_;
3101    for (_Ip __i = __ma.__1d_.__begin_, __e = __ma.__1d_.__end_;
3102                    __i != __e; ++__i, ++__t)
3103        *__t = __s[*__i];
3104    return *this;
3105}
3106
3107template <class _Tp>
3108inline
3109valarray<_Tp>&
3110valarray<_Tp>::operator=(const indirect_array<value_type>& __ia)
3111{
3112    typedef const size_t* _Ip;
3113    value_type* __t = __begin_;
3114    const value_type* __s = __ia.__vp_;
3115    for (_Ip __i = __ia.__1d_.__begin_, __e = __ia.__1d_.__end_;
3116                    __i != __e; ++__i, ++__t)
3117        *__t = __s[*__i];
3118    return *this;
3119}
3120
3121template <class _Tp>
3122template <class _ValExpr>
3123inline
3124valarray<_Tp>&
3125valarray<_Tp>::operator=(const __val_expr<_ValExpr>& __v)
3126{
3127    size_t __n = __v.size();
3128    if (size() != __n)
3129        resize(__n);
3130    value_type* __t = __begin_;
3131    for (size_t __i = 0; __i != __n; ++__t, ++__i)
3132        *__t = result_type(__v[__i]);
3133    return *this;
3134}
3135
3136template <class _Tp>
3137inline
3138__val_expr<__slice_expr<const valarray<_Tp>&> >
3139valarray<_Tp>::operator[](slice __s) const
3140{
3141    return __val_expr<__slice_expr<const valarray&> >(__slice_expr<const valarray&>(__s, *this));
3142}
3143
3144template <class _Tp>
3145inline
3146slice_array<_Tp>
3147valarray<_Tp>::operator[](slice __s)
3148{
3149    return slice_array<value_type>(__s, *this);
3150}
3151
3152template <class _Tp>
3153inline
3154__val_expr<__indirect_expr<const valarray<_Tp>&> >
3155valarray<_Tp>::operator[](const gslice& __gs) const
3156{
3157    return __val_expr<__indirect_expr<const valarray&> >(__indirect_expr<const valarray&>(__gs.__1d_, *this));
3158}
3159
3160template <class _Tp>
3161inline
3162gslice_array<_Tp>
3163valarray<_Tp>::operator[](const gslice& __gs)
3164{
3165    return gslice_array<value_type>(__gs, *this);
3166}
3167
3168#ifndef _LIBCPP_CXX03_LANG
3169
3170template <class _Tp>
3171inline
3172__val_expr<__indirect_expr<const valarray<_Tp>&> >
3173valarray<_Tp>::operator[](gslice&& __gs) const
3174{
3175    return __val_expr<__indirect_expr<const valarray&> >(__indirect_expr<const valarray&>(move(__gs.__1d_), *this));
3176}
3177
3178template <class _Tp>
3179inline
3180gslice_array<_Tp>
3181valarray<_Tp>::operator[](gslice&& __gs)
3182{
3183    return gslice_array<value_type>(move(__gs), *this);
3184}
3185
3186#endif  // _LIBCPP_CXX03_LANG
3187
3188template <class _Tp>
3189inline
3190__val_expr<__mask_expr<const valarray<_Tp>&> >
3191valarray<_Tp>::operator[](const valarray<bool>& __vb) const
3192{
3193    return __val_expr<__mask_expr<const valarray&> >(__mask_expr<const valarray&>(__vb, *this));
3194}
3195
3196template <class _Tp>
3197inline
3198mask_array<_Tp>
3199valarray<_Tp>::operator[](const valarray<bool>& __vb)
3200{
3201    return mask_array<value_type>(__vb, *this);
3202}
3203
3204#ifndef _LIBCPP_CXX03_LANG
3205
3206template <class _Tp>
3207inline
3208__val_expr<__mask_expr<const valarray<_Tp>&> >
3209valarray<_Tp>::operator[](valarray<bool>&& __vb) const
3210{
3211    return __val_expr<__mask_expr<const valarray&> >(__mask_expr<const valarray&>(move(__vb), *this));
3212}
3213
3214template <class _Tp>
3215inline
3216mask_array<_Tp>
3217valarray<_Tp>::operator[](valarray<bool>&& __vb)
3218{
3219    return mask_array<value_type>(move(__vb), *this);
3220}
3221
3222#endif  // _LIBCPP_CXX03_LANG
3223
3224template <class _Tp>
3225inline
3226__val_expr<__indirect_expr<const valarray<_Tp>&> >
3227valarray<_Tp>::operator[](const valarray<size_t>& __vs) const
3228{
3229    return __val_expr<__indirect_expr<const valarray&> >(__indirect_expr<const valarray&>(__vs, *this));
3230}
3231
3232template <class _Tp>
3233inline
3234indirect_array<_Tp>
3235valarray<_Tp>::operator[](const valarray<size_t>& __vs)
3236{
3237    return indirect_array<value_type>(__vs, *this);
3238}
3239
3240#ifndef _LIBCPP_CXX03_LANG
3241
3242template <class _Tp>
3243inline
3244__val_expr<__indirect_expr<const valarray<_Tp>&> >
3245valarray<_Tp>::operator[](valarray<size_t>&& __vs) const
3246{
3247    return __val_expr<__indirect_expr<const valarray&> >(__indirect_expr<const valarray&>(move(__vs), *this));
3248}
3249
3250template <class _Tp>
3251inline
3252indirect_array<_Tp>
3253valarray<_Tp>::operator[](valarray<size_t>&& __vs)
3254{
3255    return indirect_array<value_type>(move(__vs), *this);
3256}
3257
3258#endif  // _LIBCPP_CXX03_LANG
3259
3260template <class _Tp>
3261valarray<_Tp>
3262valarray<_Tp>::operator+() const
3263{
3264    valarray<value_type> __r;
3265    size_t __n = size();
3266    if (__n)
3267    {
3268        __r.__begin_ =
3269            __r.__end_ =
3270                static_cast<value_type*>(
3271           _VSTD::__libcpp_allocate(__n * sizeof(value_type), _LIBCPP_ALIGNOF(value_type)));
3272        for (const value_type* __p = __begin_; __n; ++__r.__end_, ++__p, --__n)
3273            ::new (__r.__end_) value_type(+*__p);
3274    }
3275    return __r;
3276}
3277
3278template <class _Tp>
3279valarray<_Tp>
3280valarray<_Tp>::operator-() const
3281{
3282    valarray<value_type> __r;
3283    size_t __n = size();
3284    if (__n)
3285    {
3286        __r.__begin_ =
3287            __r.__end_ =
3288                static_cast<value_type*>(
3289           _VSTD::__libcpp_allocate(__n * sizeof(value_type), _LIBCPP_ALIGNOF(value_type)));
3290        for (const value_type* __p = __begin_; __n; ++__r.__end_, ++__p, --__n)
3291            ::new (__r.__end_) value_type(-*__p);
3292    }
3293    return __r;
3294}
3295
3296template <class _Tp>
3297valarray<_Tp>
3298valarray<_Tp>::operator~() const
3299{
3300    valarray<value_type> __r;
3301    size_t __n = size();
3302    if (__n)
3303    {
3304        __r.__begin_ =
3305            __r.__end_ =
3306                static_cast<value_type*>(
3307           _VSTD::__libcpp_allocate(__n * sizeof(value_type), _LIBCPP_ALIGNOF(value_type)));
3308        for (const value_type* __p = __begin_; __n; ++__r.__end_, ++__p, --__n)
3309            ::new (__r.__end_) value_type(~*__p);
3310    }
3311    return __r;
3312}
3313
3314template <class _Tp>
3315valarray<bool>
3316valarray<_Tp>::operator!() const
3317{
3318    valarray<bool> __r;
3319    size_t __n = size();
3320    if (__n)
3321    {
3322        __r.__begin_ =
3323            __r.__end_ =
3324                static_cast<bool*>(_VSTD::__libcpp_allocate(__n * sizeof(bool), _LIBCPP_ALIGNOF(bool)));
3325        for (const value_type* __p = __begin_; __n; ++__r.__end_, ++__p, --__n)
3326            ::new (__r.__end_) bool(!*__p);
3327    }
3328    return __r;
3329}
3330
3331template <class _Tp>
3332inline
3333valarray<_Tp>&
3334valarray<_Tp>::operator*=(const value_type& __x)
3335{
3336    for (value_type* __p = __begin_; __p != __end_; ++__p)
3337        *__p *= __x;
3338    return *this;
3339}
3340
3341template <class _Tp>
3342inline
3343valarray<_Tp>&
3344valarray<_Tp>::operator/=(const value_type& __x)
3345{
3346    for (value_type* __p = __begin_; __p != __end_; ++__p)
3347        *__p /= __x;
3348    return *this;
3349}
3350
3351template <class _Tp>
3352inline
3353valarray<_Tp>&
3354valarray<_Tp>::operator%=(const value_type& __x)
3355{
3356    for (value_type* __p = __begin_; __p != __end_; ++__p)
3357        *__p %= __x;
3358    return *this;
3359}
3360
3361template <class _Tp>
3362inline
3363valarray<_Tp>&
3364valarray<_Tp>::operator+=(const value_type& __x)
3365{
3366    for (value_type* __p = __begin_; __p != __end_; ++__p)
3367        *__p += __x;
3368    return *this;
3369}
3370
3371template <class _Tp>
3372inline
3373valarray<_Tp>&
3374valarray<_Tp>::operator-=(const value_type& __x)
3375{
3376    for (value_type* __p = __begin_; __p != __end_; ++__p)
3377        *__p -= __x;
3378    return *this;
3379}
3380
3381template <class _Tp>
3382inline
3383valarray<_Tp>&
3384valarray<_Tp>::operator^=(const value_type& __x)
3385{
3386    for (value_type* __p = __begin_; __p != __end_; ++__p)
3387        *__p ^= __x;
3388    return *this;
3389}
3390
3391template <class _Tp>
3392inline
3393valarray<_Tp>&
3394valarray<_Tp>::operator&=(const value_type& __x)
3395{
3396    for (value_type* __p = __begin_; __p != __end_; ++__p)
3397        *__p &= __x;
3398    return *this;
3399}
3400
3401template <class _Tp>
3402inline
3403valarray<_Tp>&
3404valarray<_Tp>::operator|=(const value_type& __x)
3405{
3406    for (value_type* __p = __begin_; __p != __end_; ++__p)
3407        *__p |= __x;
3408    return *this;
3409}
3410
3411template <class _Tp>
3412inline
3413valarray<_Tp>&
3414valarray<_Tp>::operator<<=(const value_type& __x)
3415{
3416    for (value_type* __p = __begin_; __p != __end_; ++__p)
3417        *__p <<= __x;
3418    return *this;
3419}
3420
3421template <class _Tp>
3422inline
3423valarray<_Tp>&
3424valarray<_Tp>::operator>>=(const value_type& __x)
3425{
3426    for (value_type* __p = __begin_; __p != __end_; ++__p)
3427        *__p >>= __x;
3428    return *this;
3429}
3430
3431template <class _Tp>
3432template <class _Expr>
3433inline
3434typename enable_if
3435<
3436    __is_val_expr<_Expr>::value,
3437    valarray<_Tp>&
3438>::type
3439valarray<_Tp>::operator*=(const _Expr& __v)
3440{
3441    size_t __i = 0;
3442    for (value_type* __t = __begin_; __t != __end_ ; ++__t, ++__i)
3443        *__t *= __v[__i];
3444    return *this;
3445}
3446
3447template <class _Tp>
3448template <class _Expr>
3449inline
3450typename enable_if
3451<
3452    __is_val_expr<_Expr>::value,
3453    valarray<_Tp>&
3454>::type
3455valarray<_Tp>::operator/=(const _Expr& __v)
3456{
3457    size_t __i = 0;
3458    for (value_type* __t = __begin_; __t != __end_ ; ++__t, ++__i)
3459        *__t /= __v[__i];
3460    return *this;
3461}
3462
3463template <class _Tp>
3464template <class _Expr>
3465inline
3466typename enable_if
3467<
3468    __is_val_expr<_Expr>::value,
3469    valarray<_Tp>&
3470>::type
3471valarray<_Tp>::operator%=(const _Expr& __v)
3472{
3473    size_t __i = 0;
3474    for (value_type* __t = __begin_; __t != __end_ ; ++__t, ++__i)
3475        *__t %= __v[__i];
3476    return *this;
3477}
3478
3479template <class _Tp>
3480template <class _Expr>
3481inline
3482typename enable_if
3483<
3484    __is_val_expr<_Expr>::value,
3485    valarray<_Tp>&
3486>::type
3487valarray<_Tp>::operator+=(const _Expr& __v)
3488{
3489    size_t __i = 0;
3490    for (value_type* __t = __begin_; __t != __end_ ; ++__t, ++__i)
3491        *__t += __v[__i];
3492    return *this;
3493}
3494
3495template <class _Tp>
3496template <class _Expr>
3497inline
3498typename enable_if
3499<
3500    __is_val_expr<_Expr>::value,
3501    valarray<_Tp>&
3502>::type
3503valarray<_Tp>::operator-=(const _Expr& __v)
3504{
3505    size_t __i = 0;
3506    for (value_type* __t = __begin_; __t != __end_ ; ++__t, ++__i)
3507        *__t -= __v[__i];
3508    return *this;
3509}
3510
3511template <class _Tp>
3512template <class _Expr>
3513inline
3514typename enable_if
3515<
3516    __is_val_expr<_Expr>::value,
3517    valarray<_Tp>&
3518>::type
3519valarray<_Tp>::operator^=(const _Expr& __v)
3520{
3521    size_t __i = 0;
3522    for (value_type* __t = __begin_; __t != __end_ ; ++__t, ++__i)
3523        *__t ^= __v[__i];
3524    return *this;
3525}
3526
3527template <class _Tp>
3528template <class _Expr>
3529inline
3530typename enable_if
3531<
3532    __is_val_expr<_Expr>::value,
3533    valarray<_Tp>&
3534>::type
3535valarray<_Tp>::operator|=(const _Expr& __v)
3536{
3537    size_t __i = 0;
3538    for (value_type* __t = __begin_; __t != __end_ ; ++__t, ++__i)
3539        *__t |= __v[__i];
3540    return *this;
3541}
3542
3543template <class _Tp>
3544template <class _Expr>
3545inline
3546typename enable_if
3547<
3548    __is_val_expr<_Expr>::value,
3549    valarray<_Tp>&
3550>::type
3551valarray<_Tp>::operator&=(const _Expr& __v)
3552{
3553    size_t __i = 0;
3554    for (value_type* __t = __begin_; __t != __end_ ; ++__t, ++__i)
3555        *__t &= __v[__i];
3556    return *this;
3557}
3558
3559template <class _Tp>
3560template <class _Expr>
3561inline
3562typename enable_if
3563<
3564    __is_val_expr<_Expr>::value,
3565    valarray<_Tp>&
3566>::type
3567valarray<_Tp>::operator<<=(const _Expr& __v)
3568{
3569    size_t __i = 0;
3570    for (value_type* __t = __begin_; __t != __end_ ; ++__t, ++__i)
3571        *__t <<= __v[__i];
3572    return *this;
3573}
3574
3575template <class _Tp>
3576template <class _Expr>
3577inline
3578typename enable_if
3579<
3580    __is_val_expr<_Expr>::value,
3581    valarray<_Tp>&
3582>::type
3583valarray<_Tp>::operator>>=(const _Expr& __v)
3584{
3585    size_t __i = 0;
3586    for (value_type* __t = __begin_; __t != __end_ ; ++__t, ++__i)
3587        *__t >>= __v[__i];
3588    return *this;
3589}
3590
3591template <class _Tp>
3592inline
3593void
3594valarray<_Tp>::swap(valarray& __v) _NOEXCEPT
3595{
3596    _VSTD::swap(__begin_, __v.__begin_);
3597    _VSTD::swap(__end_, __v.__end_);
3598}
3599
3600template <class _Tp>
3601inline
3602_Tp
3603valarray<_Tp>::sum() const
3604{
3605    if (__begin_ == __end_)
3606        return value_type();
3607    const value_type* __p = __begin_;
3608    _Tp __r = *__p;
3609    for (++__p; __p != __end_; ++__p)
3610        __r += *__p;
3611    return __r;
3612}
3613
3614template <class _Tp>
3615inline
3616_Tp
3617valarray<_Tp>::min() const
3618{
3619    if (__begin_ == __end_)
3620        return value_type();
3621    return *_VSTD::min_element(__begin_, __end_);
3622}
3623
3624template <class _Tp>
3625inline
3626_Tp
3627valarray<_Tp>::max() const
3628{
3629    if (__begin_ == __end_)
3630        return value_type();
3631    return *_VSTD::max_element(__begin_, __end_);
3632}
3633
3634template <class _Tp>
3635valarray<_Tp>
3636valarray<_Tp>::shift(int __i) const
3637{
3638    valarray<value_type> __r;
3639    size_t __n = size();
3640    if (__n)
3641    {
3642        __r.__begin_ =
3643            __r.__end_ =
3644                static_cast<value_type*>(
3645           _VSTD::__libcpp_allocate(__n * sizeof(value_type), _LIBCPP_ALIGNOF(value_type)));
3646        const value_type* __sb;
3647        value_type* __tb;
3648        value_type* __te;
3649        if (__i >= 0)
3650        {
3651            __i = _VSTD::min(__i, static_cast<int>(__n));
3652            __sb = __begin_ + __i;
3653            __tb = __r.__begin_;
3654            __te = __r.__begin_ + (__n - __i);
3655        }
3656        else
3657        {
3658            __i = _VSTD::min(-__i, static_cast<int>(__n));
3659            __sb = __begin_;
3660            __tb = __r.__begin_ + __i;
3661            __te = __r.__begin_ + __n;
3662        }
3663        for (; __r.__end_ != __tb; ++__r.__end_)
3664            ::new (__r.__end_) value_type();
3665        for (; __r.__end_ != __te; ++__r.__end_, ++__sb)
3666            ::new (__r.__end_) value_type(*__sb);
3667        for (__te = __r.__begin_ + __n; __r.__end_ != __te; ++__r.__end_)
3668            ::new (__r.__end_) value_type();
3669    }
3670    return __r;
3671}
3672
3673template <class _Tp>
3674valarray<_Tp>
3675valarray<_Tp>::cshift(int __i) const
3676{
3677    valarray<value_type> __r;
3678    size_t __n = size();
3679    if (__n)
3680    {
3681        __r.__begin_ =
3682            __r.__end_ =
3683                static_cast<value_type*>(
3684           _VSTD::__libcpp_allocate(__n * sizeof(value_type), _LIBCPP_ALIGNOF(value_type)));
3685        __i %= static_cast<int>(__n);
3686        const value_type* __m = __i >= 0 ? __begin_ + __i : __end_ + __i;
3687        for (const value_type* __s = __m; __s != __end_; ++__r.__end_, ++__s)
3688            ::new (__r.__end_) value_type(*__s);
3689        for (const value_type* __s = __begin_; __s != __m; ++__r.__end_, ++__s)
3690            ::new (__r.__end_) value_type(*__s);
3691    }
3692    return __r;
3693}
3694
3695template <class _Tp>
3696valarray<_Tp>
3697valarray<_Tp>::apply(value_type __f(value_type)) const
3698{
3699    valarray<value_type> __r;
3700    size_t __n = size();
3701    if (__n)
3702    {
3703        __r.__begin_ =
3704            __r.__end_ =
3705                static_cast<value_type*>(
3706           _VSTD::__libcpp_allocate(__n * sizeof(value_type), _LIBCPP_ALIGNOF(value_type)));
3707        for (const value_type* __p = __begin_; __n; ++__r.__end_, ++__p, --__n)
3708            ::new (__r.__end_) value_type(__f(*__p));
3709    }
3710    return __r;
3711}
3712
3713template <class _Tp>
3714valarray<_Tp>
3715valarray<_Tp>::apply(value_type __f(const value_type&)) const
3716{
3717    valarray<value_type> __r;
3718    size_t __n = size();
3719    if (__n)
3720    {
3721        __r.__begin_ =
3722            __r.__end_ =
3723                static_cast<value_type*>(
3724           _VSTD::__libcpp_allocate(__n * sizeof(value_type), _LIBCPP_ALIGNOF(value_type)));
3725        for (const value_type* __p = __begin_; __n; ++__r.__end_, ++__p, --__n)
3726            ::new (__r.__end_) value_type(__f(*__p));
3727    }
3728    return __r;
3729}
3730
3731template <class _Tp>
3732inline
3733void valarray<_Tp>::__clear(size_t __capacity)
3734{
3735  if (__begin_ != nullptr)
3736  {
3737    while (__end_ != __begin_)
3738      (--__end_)->~value_type();
3739    _VSTD::__libcpp_deallocate(__begin_, __capacity * sizeof(value_type), _LIBCPP_ALIGNOF(value_type));
3740    __begin_ = __end_ = nullptr;
3741  }
3742}
3743
3744template <class _Tp>
3745void
3746valarray<_Tp>::resize(size_t __n, value_type __x)
3747{
3748    __clear(size());
3749    if (__n)
3750    {
3751        __begin_ = __end_ = static_cast<value_type*>(
3752           _VSTD::__libcpp_allocate(__n * sizeof(value_type), _LIBCPP_ALIGNOF(value_type)));
3753#ifndef _LIBCPP_NO_EXCEPTIONS
3754        try
3755        {
3756#endif  // _LIBCPP_NO_EXCEPTIONS
3757            for (size_t __n_left = __n; __n_left; --__n_left, ++__end_)
3758                ::new (__end_) value_type(__x);
3759#ifndef _LIBCPP_NO_EXCEPTIONS
3760        }
3761        catch (...)
3762        {
3763            __clear(__n);
3764            throw;
3765        }
3766#endif  // _LIBCPP_NO_EXCEPTIONS
3767    }
3768}
3769
3770template<class _Tp>
3771inline _LIBCPP_INLINE_VISIBILITY
3772void
3773swap(valarray<_Tp>& __x, valarray<_Tp>& __y) _NOEXCEPT
3774{
3775    __x.swap(__y);
3776}
3777
3778template<class _Expr1, class _Expr2>
3779inline _LIBCPP_INLINE_VISIBILITY
3780typename enable_if
3781<
3782    __is_val_expr<_Expr1>::value && __is_val_expr<_Expr2>::value,
3783    __val_expr<_BinaryOp<multiplies<typename _Expr1::value_type>, _Expr1, _Expr2> >
3784>::type
3785operator*(const _Expr1& __x, const _Expr2& __y)
3786{
3787    typedef typename _Expr1::value_type value_type;
3788    typedef _BinaryOp<multiplies<value_type>, _Expr1, _Expr2> _Op;
3789    return __val_expr<_Op>(_Op(multiplies<value_type>(), __x, __y));
3790}
3791
3792template<class _Expr>
3793inline _LIBCPP_INLINE_VISIBILITY
3794typename enable_if
3795<
3796    __is_val_expr<_Expr>::value,
3797    __val_expr<_BinaryOp<multiplies<typename _Expr::value_type>,
3798               _Expr, __scalar_expr<typename _Expr::value_type> > >
3799>::type
3800operator*(const _Expr& __x, const typename _Expr::value_type& __y)
3801{
3802    typedef typename _Expr::value_type value_type;
3803    typedef _BinaryOp<multiplies<value_type>, _Expr, __scalar_expr<value_type> > _Op;
3804    return __val_expr<_Op>(_Op(multiplies<value_type>(),
3805                           __x, __scalar_expr<value_type>(__y, __x.size())));
3806}
3807
3808template<class _Expr>
3809inline _LIBCPP_INLINE_VISIBILITY
3810typename enable_if
3811<
3812    __is_val_expr<_Expr>::value,
3813    __val_expr<_BinaryOp<multiplies<typename _Expr::value_type>,
3814               __scalar_expr<typename _Expr::value_type>, _Expr> >
3815>::type
3816operator*(const typename _Expr::value_type& __x, const _Expr& __y)
3817{
3818    typedef typename _Expr::value_type value_type;
3819    typedef _BinaryOp<multiplies<value_type>, __scalar_expr<value_type>, _Expr> _Op;
3820    return __val_expr<_Op>(_Op(multiplies<value_type>(),
3821                           __scalar_expr<value_type>(__x, __y.size()), __y));
3822}
3823
3824template<class _Expr1, class _Expr2>
3825inline _LIBCPP_INLINE_VISIBILITY
3826typename enable_if
3827<
3828    __is_val_expr<_Expr1>::value && __is_val_expr<_Expr2>::value,
3829    __val_expr<_BinaryOp<divides<typename _Expr1::value_type>, _Expr1, _Expr2> >
3830>::type
3831operator/(const _Expr1& __x, const _Expr2& __y)
3832{
3833    typedef typename _Expr1::value_type value_type;
3834    typedef _BinaryOp<divides<value_type>, _Expr1, _Expr2> _Op;
3835    return __val_expr<_Op>(_Op(divides<value_type>(), __x, __y));
3836}
3837
3838template<class _Expr>
3839inline _LIBCPP_INLINE_VISIBILITY
3840typename enable_if
3841<
3842    __is_val_expr<_Expr>::value,
3843    __val_expr<_BinaryOp<divides<typename _Expr::value_type>,
3844               _Expr, __scalar_expr<typename _Expr::value_type> > >
3845>::type
3846operator/(const _Expr& __x, const typename _Expr::value_type& __y)
3847{
3848    typedef typename _Expr::value_type value_type;
3849    typedef _BinaryOp<divides<value_type>, _Expr, __scalar_expr<value_type> > _Op;
3850    return __val_expr<_Op>(_Op(divides<value_type>(),
3851                           __x, __scalar_expr<value_type>(__y, __x.size())));
3852}
3853
3854template<class _Expr>
3855inline _LIBCPP_INLINE_VISIBILITY
3856typename enable_if
3857<
3858    __is_val_expr<_Expr>::value,
3859    __val_expr<_BinaryOp<divides<typename _Expr::value_type>,
3860               __scalar_expr<typename _Expr::value_type>, _Expr> >
3861>::type
3862operator/(const typename _Expr::value_type& __x, const _Expr& __y)
3863{
3864    typedef typename _Expr::value_type value_type;
3865    typedef _BinaryOp<divides<value_type>, __scalar_expr<value_type>, _Expr> _Op;
3866    return __val_expr<_Op>(_Op(divides<value_type>(),
3867                           __scalar_expr<value_type>(__x, __y.size()), __y));
3868}
3869
3870template<class _Expr1, class _Expr2>
3871inline _LIBCPP_INLINE_VISIBILITY
3872typename enable_if
3873<
3874    __is_val_expr<_Expr1>::value && __is_val_expr<_Expr2>::value,
3875    __val_expr<_BinaryOp<modulus<typename _Expr1::value_type>, _Expr1, _Expr2> >
3876>::type
3877operator%(const _Expr1& __x, const _Expr2& __y)
3878{
3879    typedef typename _Expr1::value_type value_type;
3880    typedef _BinaryOp<modulus<value_type>, _Expr1, _Expr2> _Op;
3881    return __val_expr<_Op>(_Op(modulus<value_type>(), __x, __y));
3882}
3883
3884template<class _Expr>
3885inline _LIBCPP_INLINE_VISIBILITY
3886typename enable_if
3887<
3888    __is_val_expr<_Expr>::value,
3889    __val_expr<_BinaryOp<modulus<typename _Expr::value_type>,
3890               _Expr, __scalar_expr<typename _Expr::value_type> > >
3891>::type
3892operator%(const _Expr& __x, const typename _Expr::value_type& __y)
3893{
3894    typedef typename _Expr::value_type value_type;
3895    typedef _BinaryOp<modulus<value_type>, _Expr, __scalar_expr<value_type> > _Op;
3896    return __val_expr<_Op>(_Op(modulus<value_type>(),
3897                           __x, __scalar_expr<value_type>(__y, __x.size())));
3898}
3899
3900template<class _Expr>
3901inline _LIBCPP_INLINE_VISIBILITY
3902typename enable_if
3903<
3904    __is_val_expr<_Expr>::value,
3905    __val_expr<_BinaryOp<modulus<typename _Expr::value_type>,
3906               __scalar_expr<typename _Expr::value_type>, _Expr> >
3907>::type
3908operator%(const typename _Expr::value_type& __x, const _Expr& __y)
3909{
3910    typedef typename _Expr::value_type value_type;
3911    typedef _BinaryOp<modulus<value_type>, __scalar_expr<value_type>, _Expr> _Op;
3912    return __val_expr<_Op>(_Op(modulus<value_type>(),
3913                           __scalar_expr<value_type>(__x, __y.size()), __y));
3914}
3915
3916template<class _Expr1, class _Expr2>
3917inline _LIBCPP_INLINE_VISIBILITY
3918typename enable_if
3919<
3920    __is_val_expr<_Expr1>::value && __is_val_expr<_Expr2>::value,
3921    __val_expr<_BinaryOp<plus<typename _Expr1::value_type>, _Expr1, _Expr2> >
3922>::type
3923operator+(const _Expr1& __x, const _Expr2& __y)
3924{
3925    typedef typename _Expr1::value_type value_type;
3926    typedef _BinaryOp<plus<value_type>, _Expr1, _Expr2> _Op;
3927    return __val_expr<_Op>(_Op(plus<value_type>(), __x, __y));
3928}
3929
3930template<class _Expr>
3931inline _LIBCPP_INLINE_VISIBILITY
3932typename enable_if
3933<
3934    __is_val_expr<_Expr>::value,
3935    __val_expr<_BinaryOp<plus<typename _Expr::value_type>,
3936               _Expr, __scalar_expr<typename _Expr::value_type> > >
3937>::type
3938operator+(const _Expr& __x, const typename _Expr::value_type& __y)
3939{
3940    typedef typename _Expr::value_type value_type;
3941    typedef _BinaryOp<plus<value_type>, _Expr, __scalar_expr<value_type> > _Op;
3942    return __val_expr<_Op>(_Op(plus<value_type>(),
3943                           __x, __scalar_expr<value_type>(__y, __x.size())));
3944}
3945
3946template<class _Expr>
3947inline _LIBCPP_INLINE_VISIBILITY
3948typename enable_if
3949<
3950    __is_val_expr<_Expr>::value,
3951    __val_expr<_BinaryOp<plus<typename _Expr::value_type>,
3952               __scalar_expr<typename _Expr::value_type>, _Expr> >
3953>::type
3954operator+(const typename _Expr::value_type& __x, const _Expr& __y)
3955{
3956    typedef typename _Expr::value_type value_type;
3957    typedef _BinaryOp<plus<value_type>, __scalar_expr<value_type>, _Expr> _Op;
3958    return __val_expr<_Op>(_Op(plus<value_type>(),
3959                           __scalar_expr<value_type>(__x, __y.size()), __y));
3960}
3961
3962template<class _Expr1, class _Expr2>
3963inline _LIBCPP_INLINE_VISIBILITY
3964typename enable_if
3965<
3966    __is_val_expr<_Expr1>::value && __is_val_expr<_Expr2>::value,
3967    __val_expr<_BinaryOp<minus<typename _Expr1::value_type>, _Expr1, _Expr2> >
3968>::type
3969operator-(const _Expr1& __x, const _Expr2& __y)
3970{
3971    typedef typename _Expr1::value_type value_type;
3972    typedef _BinaryOp<minus<value_type>, _Expr1, _Expr2> _Op;
3973    return __val_expr<_Op>(_Op(minus<value_type>(), __x, __y));
3974}
3975
3976template<class _Expr>
3977inline _LIBCPP_INLINE_VISIBILITY
3978typename enable_if
3979<
3980    __is_val_expr<_Expr>::value,
3981    __val_expr<_BinaryOp<minus<typename _Expr::value_type>,
3982               _Expr, __scalar_expr<typename _Expr::value_type> > >
3983>::type
3984operator-(const _Expr& __x, const typename _Expr::value_type& __y)
3985{
3986    typedef typename _Expr::value_type value_type;
3987    typedef _BinaryOp<minus<value_type>, _Expr, __scalar_expr<value_type> > _Op;
3988    return __val_expr<_Op>(_Op(minus<value_type>(),
3989                           __x, __scalar_expr<value_type>(__y, __x.size())));
3990}
3991
3992template<class _Expr>
3993inline _LIBCPP_INLINE_VISIBILITY
3994typename enable_if
3995<
3996    __is_val_expr<_Expr>::value,
3997    __val_expr<_BinaryOp<minus<typename _Expr::value_type>,
3998               __scalar_expr<typename _Expr::value_type>, _Expr> >
3999>::type
4000operator-(const typename _Expr::value_type& __x, const _Expr& __y)
4001{
4002    typedef typename _Expr::value_type value_type;
4003    typedef _BinaryOp<minus<value_type>, __scalar_expr<value_type>, _Expr> _Op;
4004    return __val_expr<_Op>(_Op(minus<value_type>(),
4005                           __scalar_expr<value_type>(__x, __y.size()), __y));
4006}
4007
4008template<class _Expr1, class _Expr2>
4009inline _LIBCPP_INLINE_VISIBILITY
4010typename enable_if
4011<
4012    __is_val_expr<_Expr1>::value && __is_val_expr<_Expr2>::value,
4013    __val_expr<_BinaryOp<bit_xor<typename _Expr1::value_type>, _Expr1, _Expr2> >
4014>::type
4015operator^(const _Expr1& __x, const _Expr2& __y)
4016{
4017    typedef typename _Expr1::value_type value_type;
4018    typedef _BinaryOp<bit_xor<value_type>, _Expr1, _Expr2> _Op;
4019    return __val_expr<_Op>(_Op(bit_xor<value_type>(), __x, __y));
4020}
4021
4022template<class _Expr>
4023inline _LIBCPP_INLINE_VISIBILITY
4024typename enable_if
4025<
4026    __is_val_expr<_Expr>::value,
4027    __val_expr<_BinaryOp<bit_xor<typename _Expr::value_type>,
4028               _Expr, __scalar_expr<typename _Expr::value_type> > >
4029>::type
4030operator^(const _Expr& __x, const typename _Expr::value_type& __y)
4031{
4032    typedef typename _Expr::value_type value_type;
4033    typedef _BinaryOp<bit_xor<value_type>, _Expr, __scalar_expr<value_type> > _Op;
4034    return __val_expr<_Op>(_Op(bit_xor<value_type>(),
4035                           __x, __scalar_expr<value_type>(__y, __x.size())));
4036}
4037
4038template<class _Expr>
4039inline _LIBCPP_INLINE_VISIBILITY
4040typename enable_if
4041<
4042    __is_val_expr<_Expr>::value,
4043    __val_expr<_BinaryOp<bit_xor<typename _Expr::value_type>,
4044               __scalar_expr<typename _Expr::value_type>, _Expr> >
4045>::type
4046operator^(const typename _Expr::value_type& __x, const _Expr& __y)
4047{
4048    typedef typename _Expr::value_type value_type;
4049    typedef _BinaryOp<bit_xor<value_type>, __scalar_expr<value_type>, _Expr> _Op;
4050    return __val_expr<_Op>(_Op(bit_xor<value_type>(),
4051                           __scalar_expr<value_type>(__x, __y.size()), __y));
4052}
4053
4054template<class _Expr1, class _Expr2>
4055inline _LIBCPP_INLINE_VISIBILITY
4056typename enable_if
4057<
4058    __is_val_expr<_Expr1>::value && __is_val_expr<_Expr2>::value,
4059    __val_expr<_BinaryOp<bit_and<typename _Expr1::value_type>, _Expr1, _Expr2> >
4060>::type
4061operator&(const _Expr1& __x, const _Expr2& __y)
4062{
4063    typedef typename _Expr1::value_type value_type;
4064    typedef _BinaryOp<bit_and<value_type>, _Expr1, _Expr2> _Op;
4065    return __val_expr<_Op>(_Op(bit_and<value_type>(), __x, __y));
4066}
4067
4068template<class _Expr>
4069inline _LIBCPP_INLINE_VISIBILITY
4070typename enable_if
4071<
4072    __is_val_expr<_Expr>::value,
4073    __val_expr<_BinaryOp<bit_and<typename _Expr::value_type>,
4074               _Expr, __scalar_expr<typename _Expr::value_type> > >
4075>::type
4076operator&(const _Expr& __x, const typename _Expr::value_type& __y)
4077{
4078    typedef typename _Expr::value_type value_type;
4079    typedef _BinaryOp<bit_and<value_type>, _Expr, __scalar_expr<value_type> > _Op;
4080    return __val_expr<_Op>(_Op(bit_and<value_type>(),
4081                           __x, __scalar_expr<value_type>(__y, __x.size())));
4082}
4083
4084template<class _Expr>
4085inline _LIBCPP_INLINE_VISIBILITY
4086typename enable_if
4087<
4088    __is_val_expr<_Expr>::value,
4089    __val_expr<_BinaryOp<bit_and<typename _Expr::value_type>,
4090               __scalar_expr<typename _Expr::value_type>, _Expr> >
4091>::type
4092operator&(const typename _Expr::value_type& __x, const _Expr& __y)
4093{
4094    typedef typename _Expr::value_type value_type;
4095    typedef _BinaryOp<bit_and<value_type>, __scalar_expr<value_type>, _Expr> _Op;
4096    return __val_expr<_Op>(_Op(bit_and<value_type>(),
4097                           __scalar_expr<value_type>(__x, __y.size()), __y));
4098}
4099
4100template<class _Expr1, class _Expr2>
4101inline _LIBCPP_INLINE_VISIBILITY
4102typename enable_if
4103<
4104    __is_val_expr<_Expr1>::value && __is_val_expr<_Expr2>::value,
4105    __val_expr<_BinaryOp<bit_or<typename _Expr1::value_type>, _Expr1, _Expr2> >
4106>::type
4107operator|(const _Expr1& __x, const _Expr2& __y)
4108{
4109    typedef typename _Expr1::value_type value_type;
4110    typedef _BinaryOp<bit_or<value_type>, _Expr1, _Expr2> _Op;
4111    return __val_expr<_Op>(_Op(bit_or<value_type>(), __x, __y));
4112}
4113
4114template<class _Expr>
4115inline _LIBCPP_INLINE_VISIBILITY
4116typename enable_if
4117<
4118    __is_val_expr<_Expr>::value,
4119    __val_expr<_BinaryOp<bit_or<typename _Expr::value_type>,
4120               _Expr, __scalar_expr<typename _Expr::value_type> > >
4121>::type
4122operator|(const _Expr& __x, const typename _Expr::value_type& __y)
4123{
4124    typedef typename _Expr::value_type value_type;
4125    typedef _BinaryOp<bit_or<value_type>, _Expr, __scalar_expr<value_type> > _Op;
4126    return __val_expr<_Op>(_Op(bit_or<value_type>(),
4127                           __x, __scalar_expr<value_type>(__y, __x.size())));
4128}
4129
4130template<class _Expr>
4131inline _LIBCPP_INLINE_VISIBILITY
4132typename enable_if
4133<
4134    __is_val_expr<_Expr>::value,
4135    __val_expr<_BinaryOp<bit_or<typename _Expr::value_type>,
4136               __scalar_expr<typename _Expr::value_type>, _Expr> >
4137>::type
4138operator|(const typename _Expr::value_type& __x, const _Expr& __y)
4139{
4140    typedef typename _Expr::value_type value_type;
4141    typedef _BinaryOp<bit_or<value_type>, __scalar_expr<value_type>, _Expr> _Op;
4142    return __val_expr<_Op>(_Op(bit_or<value_type>(),
4143                           __scalar_expr<value_type>(__x, __y.size()), __y));
4144}
4145
4146template<class _Expr1, class _Expr2>
4147inline _LIBCPP_INLINE_VISIBILITY
4148typename enable_if
4149<
4150    __is_val_expr<_Expr1>::value && __is_val_expr<_Expr2>::value,
4151    __val_expr<_BinaryOp<__bit_shift_left<typename _Expr1::value_type>, _Expr1, _Expr2> >
4152>::type
4153operator<<(const _Expr1& __x, const _Expr2& __y)
4154{
4155    typedef typename _Expr1::value_type value_type;
4156    typedef _BinaryOp<__bit_shift_left<value_type>, _Expr1, _Expr2> _Op;
4157    return __val_expr<_Op>(_Op(__bit_shift_left<value_type>(), __x, __y));
4158}
4159
4160template<class _Expr>
4161inline _LIBCPP_INLINE_VISIBILITY
4162typename enable_if
4163<
4164    __is_val_expr<_Expr>::value,
4165    __val_expr<_BinaryOp<__bit_shift_left<typename _Expr::value_type>,
4166               _Expr, __scalar_expr<typename _Expr::value_type> > >
4167>::type
4168operator<<(const _Expr& __x, const typename _Expr::value_type& __y)
4169{
4170    typedef typename _Expr::value_type value_type;
4171    typedef _BinaryOp<__bit_shift_left<value_type>, _Expr, __scalar_expr<value_type> > _Op;
4172    return __val_expr<_Op>(_Op(__bit_shift_left<value_type>(),
4173                           __x, __scalar_expr<value_type>(__y, __x.size())));
4174}
4175
4176template<class _Expr>
4177inline _LIBCPP_INLINE_VISIBILITY
4178typename enable_if
4179<
4180    __is_val_expr<_Expr>::value,
4181    __val_expr<_BinaryOp<__bit_shift_left<typename _Expr::value_type>,
4182               __scalar_expr<typename _Expr::value_type>, _Expr> >
4183>::type
4184operator<<(const typename _Expr::value_type& __x, const _Expr& __y)
4185{
4186    typedef typename _Expr::value_type value_type;
4187    typedef _BinaryOp<__bit_shift_left<value_type>, __scalar_expr<value_type>, _Expr> _Op;
4188    return __val_expr<_Op>(_Op(__bit_shift_left<value_type>(),
4189                           __scalar_expr<value_type>(__x, __y.size()), __y));
4190}
4191
4192template<class _Expr1, class _Expr2>
4193inline _LIBCPP_INLINE_VISIBILITY
4194typename enable_if
4195<
4196    __is_val_expr<_Expr1>::value && __is_val_expr<_Expr2>::value,
4197    __val_expr<_BinaryOp<__bit_shift_right<typename _Expr1::value_type>, _Expr1, _Expr2> >
4198>::type
4199operator>>(const _Expr1& __x, const _Expr2& __y)
4200{
4201    typedef typename _Expr1::value_type value_type;
4202    typedef _BinaryOp<__bit_shift_right<value_type>, _Expr1, _Expr2> _Op;
4203    return __val_expr<_Op>(_Op(__bit_shift_right<value_type>(), __x, __y));
4204}
4205
4206template<class _Expr>
4207inline _LIBCPP_INLINE_VISIBILITY
4208typename enable_if
4209<
4210    __is_val_expr<_Expr>::value,
4211    __val_expr<_BinaryOp<__bit_shift_right<typename _Expr::value_type>,
4212               _Expr, __scalar_expr<typename _Expr::value_type> > >
4213>::type
4214operator>>(const _Expr& __x, const typename _Expr::value_type& __y)
4215{
4216    typedef typename _Expr::value_type value_type;
4217    typedef _BinaryOp<__bit_shift_right<value_type>, _Expr, __scalar_expr<value_type> > _Op;
4218    return __val_expr<_Op>(_Op(__bit_shift_right<value_type>(),
4219                           __x, __scalar_expr<value_type>(__y, __x.size())));
4220}
4221
4222template<class _Expr>
4223inline _LIBCPP_INLINE_VISIBILITY
4224typename enable_if
4225<
4226    __is_val_expr<_Expr>::value,
4227    __val_expr<_BinaryOp<__bit_shift_right<typename _Expr::value_type>,
4228               __scalar_expr<typename _Expr::value_type>, _Expr> >
4229>::type
4230operator>>(const typename _Expr::value_type& __x, const _Expr& __y)
4231{
4232    typedef typename _Expr::value_type value_type;
4233    typedef _BinaryOp<__bit_shift_right<value_type>, __scalar_expr<value_type>, _Expr> _Op;
4234    return __val_expr<_Op>(_Op(__bit_shift_right<value_type>(),
4235                           __scalar_expr<value_type>(__x, __y.size()), __y));
4236}
4237
4238template<class _Expr1, class _Expr2>
4239inline _LIBCPP_INLINE_VISIBILITY
4240typename enable_if
4241<
4242    __is_val_expr<_Expr1>::value && __is_val_expr<_Expr2>::value,
4243    __val_expr<_BinaryOp<logical_and<typename _Expr1::value_type>, _Expr1, _Expr2> >
4244>::type
4245operator&&(const _Expr1& __x, const _Expr2& __y)
4246{
4247    typedef typename _Expr1::value_type value_type;
4248    typedef _BinaryOp<logical_and<value_type>, _Expr1, _Expr2> _Op;
4249    return __val_expr<_Op>(_Op(logical_and<value_type>(), __x, __y));
4250}
4251
4252template<class _Expr>
4253inline _LIBCPP_INLINE_VISIBILITY
4254typename enable_if
4255<
4256    __is_val_expr<_Expr>::value,
4257    __val_expr<_BinaryOp<logical_and<typename _Expr::value_type>,
4258               _Expr, __scalar_expr<typename _Expr::value_type> > >
4259>::type
4260operator&&(const _Expr& __x, const typename _Expr::value_type& __y)
4261{
4262    typedef typename _Expr::value_type value_type;
4263    typedef _BinaryOp<logical_and<value_type>, _Expr, __scalar_expr<value_type> > _Op;
4264    return __val_expr<_Op>(_Op(logical_and<value_type>(),
4265                           __x, __scalar_expr<value_type>(__y, __x.size())));
4266}
4267
4268template<class _Expr>
4269inline _LIBCPP_INLINE_VISIBILITY
4270typename enable_if
4271<
4272    __is_val_expr<_Expr>::value,
4273    __val_expr<_BinaryOp<logical_and<typename _Expr::value_type>,
4274               __scalar_expr<typename _Expr::value_type>, _Expr> >
4275>::type
4276operator&&(const typename _Expr::value_type& __x, const _Expr& __y)
4277{
4278    typedef typename _Expr::value_type value_type;
4279    typedef _BinaryOp<logical_and<value_type>, __scalar_expr<value_type>, _Expr> _Op;
4280    return __val_expr<_Op>(_Op(logical_and<value_type>(),
4281                           __scalar_expr<value_type>(__x, __y.size()), __y));
4282}
4283
4284template<class _Expr1, class _Expr2>
4285inline _LIBCPP_INLINE_VISIBILITY
4286typename enable_if
4287<
4288    __is_val_expr<_Expr1>::value && __is_val_expr<_Expr2>::value,
4289    __val_expr<_BinaryOp<logical_or<typename _Expr1::value_type>, _Expr1, _Expr2> >
4290>::type
4291operator||(const _Expr1& __x, const _Expr2& __y)
4292{
4293    typedef typename _Expr1::value_type value_type;
4294    typedef _BinaryOp<logical_or<value_type>, _Expr1, _Expr2> _Op;
4295    return __val_expr<_Op>(_Op(logical_or<value_type>(), __x, __y));
4296}
4297
4298template<class _Expr>
4299inline _LIBCPP_INLINE_VISIBILITY
4300typename enable_if
4301<
4302    __is_val_expr<_Expr>::value,
4303    __val_expr<_BinaryOp<logical_or<typename _Expr::value_type>,
4304               _Expr, __scalar_expr<typename _Expr::value_type> > >
4305>::type
4306operator||(const _Expr& __x, const typename _Expr::value_type& __y)
4307{
4308    typedef typename _Expr::value_type value_type;
4309    typedef _BinaryOp<logical_or<value_type>, _Expr, __scalar_expr<value_type> > _Op;
4310    return __val_expr<_Op>(_Op(logical_or<value_type>(),
4311                           __x, __scalar_expr<value_type>(__y, __x.size())));
4312}
4313
4314template<class _Expr>
4315inline _LIBCPP_INLINE_VISIBILITY
4316typename enable_if
4317<
4318    __is_val_expr<_Expr>::value,
4319    __val_expr<_BinaryOp<logical_or<typename _Expr::value_type>,
4320               __scalar_expr<typename _Expr::value_type>, _Expr> >
4321>::type
4322operator||(const typename _Expr::value_type& __x, const _Expr& __y)
4323{
4324    typedef typename _Expr::value_type value_type;
4325    typedef _BinaryOp<logical_or<value_type>, __scalar_expr<value_type>, _Expr> _Op;
4326    return __val_expr<_Op>(_Op(logical_or<value_type>(),
4327                           __scalar_expr<value_type>(__x, __y.size()), __y));
4328}
4329
4330template<class _Expr1, class _Expr2>
4331inline _LIBCPP_INLINE_VISIBILITY
4332typename enable_if
4333<
4334    __is_val_expr<_Expr1>::value && __is_val_expr<_Expr2>::value,
4335    __val_expr<_BinaryOp<equal_to<typename _Expr1::value_type>, _Expr1, _Expr2> >
4336>::type
4337operator==(const _Expr1& __x, const _Expr2& __y)
4338{
4339    typedef typename _Expr1::value_type value_type;
4340    typedef _BinaryOp<equal_to<value_type>, _Expr1, _Expr2> _Op;
4341    return __val_expr<_Op>(_Op(equal_to<value_type>(), __x, __y));
4342}
4343
4344template<class _Expr>
4345inline _LIBCPP_INLINE_VISIBILITY
4346typename enable_if
4347<
4348    __is_val_expr<_Expr>::value,
4349    __val_expr<_BinaryOp<equal_to<typename _Expr::value_type>,
4350               _Expr, __scalar_expr<typename _Expr::value_type> > >
4351>::type
4352operator==(const _Expr& __x, const typename _Expr::value_type& __y)
4353{
4354    typedef typename _Expr::value_type value_type;
4355    typedef _BinaryOp<equal_to<value_type>, _Expr, __scalar_expr<value_type> > _Op;
4356    return __val_expr<_Op>(_Op(equal_to<value_type>(),
4357                           __x, __scalar_expr<value_type>(__y, __x.size())));
4358}
4359
4360template<class _Expr>
4361inline _LIBCPP_INLINE_VISIBILITY
4362typename enable_if
4363<
4364    __is_val_expr<_Expr>::value,
4365    __val_expr<_BinaryOp<equal_to<typename _Expr::value_type>,
4366               __scalar_expr<typename _Expr::value_type>, _Expr> >
4367>::type
4368operator==(const typename _Expr::value_type& __x, const _Expr& __y)
4369{
4370    typedef typename _Expr::value_type value_type;
4371    typedef _BinaryOp<equal_to<value_type>, __scalar_expr<value_type>, _Expr> _Op;
4372    return __val_expr<_Op>(_Op(equal_to<value_type>(),
4373                           __scalar_expr<value_type>(__x, __y.size()), __y));
4374}
4375
4376template<class _Expr1, class _Expr2>
4377inline _LIBCPP_INLINE_VISIBILITY
4378typename enable_if
4379<
4380    __is_val_expr<_Expr1>::value && __is_val_expr<_Expr2>::value,
4381    __val_expr<_BinaryOp<not_equal_to<typename _Expr1::value_type>, _Expr1, _Expr2> >
4382>::type
4383operator!=(const _Expr1& __x, const _Expr2& __y)
4384{
4385    typedef typename _Expr1::value_type value_type;
4386    typedef _BinaryOp<not_equal_to<value_type>, _Expr1, _Expr2> _Op;
4387    return __val_expr<_Op>(_Op(not_equal_to<value_type>(), __x, __y));
4388}
4389
4390template<class _Expr>
4391inline _LIBCPP_INLINE_VISIBILITY
4392typename enable_if
4393<
4394    __is_val_expr<_Expr>::value,
4395    __val_expr<_BinaryOp<not_equal_to<typename _Expr::value_type>,
4396               _Expr, __scalar_expr<typename _Expr::value_type> > >
4397>::type
4398operator!=(const _Expr& __x, const typename _Expr::value_type& __y)
4399{
4400    typedef typename _Expr::value_type value_type;
4401    typedef _BinaryOp<not_equal_to<value_type>, _Expr, __scalar_expr<value_type> > _Op;
4402    return __val_expr<_Op>(_Op(not_equal_to<value_type>(),
4403                           __x, __scalar_expr<value_type>(__y, __x.size())));
4404}
4405
4406template<class _Expr>
4407inline _LIBCPP_INLINE_VISIBILITY
4408typename enable_if
4409<
4410    __is_val_expr<_Expr>::value,
4411    __val_expr<_BinaryOp<not_equal_to<typename _Expr::value_type>,
4412               __scalar_expr<typename _Expr::value_type>, _Expr> >
4413>::type
4414operator!=(const typename _Expr::value_type& __x, const _Expr& __y)
4415{
4416    typedef typename _Expr::value_type value_type;
4417    typedef _BinaryOp<not_equal_to<value_type>, __scalar_expr<value_type>, _Expr> _Op;
4418    return __val_expr<_Op>(_Op(not_equal_to<value_type>(),
4419                           __scalar_expr<value_type>(__x, __y.size()), __y));
4420}
4421
4422template<class _Expr1, class _Expr2>
4423inline _LIBCPP_INLINE_VISIBILITY
4424typename enable_if
4425<
4426    __is_val_expr<_Expr1>::value && __is_val_expr<_Expr2>::value,
4427    __val_expr<_BinaryOp<less<typename _Expr1::value_type>, _Expr1, _Expr2> >
4428>::type
4429operator<(const _Expr1& __x, const _Expr2& __y)
4430{
4431    typedef typename _Expr1::value_type value_type;
4432    typedef _BinaryOp<less<value_type>, _Expr1, _Expr2> _Op;
4433    return __val_expr<_Op>(_Op(less<value_type>(), __x, __y));
4434}
4435
4436template<class _Expr>
4437inline _LIBCPP_INLINE_VISIBILITY
4438typename enable_if
4439<
4440    __is_val_expr<_Expr>::value,
4441    __val_expr<_BinaryOp<less<typename _Expr::value_type>,
4442               _Expr, __scalar_expr<typename _Expr::value_type> > >
4443>::type
4444operator<(const _Expr& __x, const typename _Expr::value_type& __y)
4445{
4446    typedef typename _Expr::value_type value_type;
4447    typedef _BinaryOp<less<value_type>, _Expr, __scalar_expr<value_type> > _Op;
4448    return __val_expr<_Op>(_Op(less<value_type>(),
4449                           __x, __scalar_expr<value_type>(__y, __x.size())));
4450}
4451
4452template<class _Expr>
4453inline _LIBCPP_INLINE_VISIBILITY
4454typename enable_if
4455<
4456    __is_val_expr<_Expr>::value,
4457    __val_expr<_BinaryOp<less<typename _Expr::value_type>,
4458               __scalar_expr<typename _Expr::value_type>, _Expr> >
4459>::type
4460operator<(const typename _Expr::value_type& __x, const _Expr& __y)
4461{
4462    typedef typename _Expr::value_type value_type;
4463    typedef _BinaryOp<less<value_type>, __scalar_expr<value_type>, _Expr> _Op;
4464    return __val_expr<_Op>(_Op(less<value_type>(),
4465                           __scalar_expr<value_type>(__x, __y.size()), __y));
4466}
4467
4468template<class _Expr1, class _Expr2>
4469inline _LIBCPP_INLINE_VISIBILITY
4470typename enable_if
4471<
4472    __is_val_expr<_Expr1>::value && __is_val_expr<_Expr2>::value,
4473    __val_expr<_BinaryOp<greater<typename _Expr1::value_type>, _Expr1, _Expr2> >
4474>::type
4475operator>(const _Expr1& __x, const _Expr2& __y)
4476{
4477    typedef typename _Expr1::value_type value_type;
4478    typedef _BinaryOp<greater<value_type>, _Expr1, _Expr2> _Op;
4479    return __val_expr<_Op>(_Op(greater<value_type>(), __x, __y));
4480}
4481
4482template<class _Expr>
4483inline _LIBCPP_INLINE_VISIBILITY
4484typename enable_if
4485<
4486    __is_val_expr<_Expr>::value,
4487    __val_expr<_BinaryOp<greater<typename _Expr::value_type>,
4488               _Expr, __scalar_expr<typename _Expr::value_type> > >
4489>::type
4490operator>(const _Expr& __x, const typename _Expr::value_type& __y)
4491{
4492    typedef typename _Expr::value_type value_type;
4493    typedef _BinaryOp<greater<value_type>, _Expr, __scalar_expr<value_type> > _Op;
4494    return __val_expr<_Op>(_Op(greater<value_type>(),
4495                           __x, __scalar_expr<value_type>(__y, __x.size())));
4496}
4497
4498template<class _Expr>
4499inline _LIBCPP_INLINE_VISIBILITY
4500typename enable_if
4501<
4502    __is_val_expr<_Expr>::value,
4503    __val_expr<_BinaryOp<greater<typename _Expr::value_type>,
4504               __scalar_expr<typename _Expr::value_type>, _Expr> >
4505>::type
4506operator>(const typename _Expr::value_type& __x, const _Expr& __y)
4507{
4508    typedef typename _Expr::value_type value_type;
4509    typedef _BinaryOp<greater<value_type>, __scalar_expr<value_type>, _Expr> _Op;
4510    return __val_expr<_Op>(_Op(greater<value_type>(),
4511                           __scalar_expr<value_type>(__x, __y.size()), __y));
4512}
4513
4514template<class _Expr1, class _Expr2>
4515inline _LIBCPP_INLINE_VISIBILITY
4516typename enable_if
4517<
4518    __is_val_expr<_Expr1>::value && __is_val_expr<_Expr2>::value,
4519    __val_expr<_BinaryOp<less_equal<typename _Expr1::value_type>, _Expr1, _Expr2> >
4520>::type
4521operator<=(const _Expr1& __x, const _Expr2& __y)
4522{
4523    typedef typename _Expr1::value_type value_type;
4524    typedef _BinaryOp<less_equal<value_type>, _Expr1, _Expr2> _Op;
4525    return __val_expr<_Op>(_Op(less_equal<value_type>(), __x, __y));
4526}
4527
4528template<class _Expr>
4529inline _LIBCPP_INLINE_VISIBILITY
4530typename enable_if
4531<
4532    __is_val_expr<_Expr>::value,
4533    __val_expr<_BinaryOp<less_equal<typename _Expr::value_type>,
4534               _Expr, __scalar_expr<typename _Expr::value_type> > >
4535>::type
4536operator<=(const _Expr& __x, const typename _Expr::value_type& __y)
4537{
4538    typedef typename _Expr::value_type value_type;
4539    typedef _BinaryOp<less_equal<value_type>, _Expr, __scalar_expr<value_type> > _Op;
4540    return __val_expr<_Op>(_Op(less_equal<value_type>(),
4541                           __x, __scalar_expr<value_type>(__y, __x.size())));
4542}
4543
4544template<class _Expr>
4545inline _LIBCPP_INLINE_VISIBILITY
4546typename enable_if
4547<
4548    __is_val_expr<_Expr>::value,
4549    __val_expr<_BinaryOp<less_equal<typename _Expr::value_type>,
4550               __scalar_expr<typename _Expr::value_type>, _Expr> >
4551>::type
4552operator<=(const typename _Expr::value_type& __x, const _Expr& __y)
4553{
4554    typedef typename _Expr::value_type value_type;
4555    typedef _BinaryOp<less_equal<value_type>, __scalar_expr<value_type>, _Expr> _Op;
4556    return __val_expr<_Op>(_Op(less_equal<value_type>(),
4557                           __scalar_expr<value_type>(__x, __y.size()), __y));
4558}
4559
4560template<class _Expr1, class _Expr2>
4561inline _LIBCPP_INLINE_VISIBILITY
4562typename enable_if
4563<
4564    __is_val_expr<_Expr1>::value && __is_val_expr<_Expr2>::value,
4565    __val_expr<_BinaryOp<greater_equal<typename _Expr1::value_type>, _Expr1, _Expr2> >
4566>::type
4567operator>=(const _Expr1& __x, const _Expr2& __y)
4568{
4569    typedef typename _Expr1::value_type value_type;
4570    typedef _BinaryOp<greater_equal<value_type>, _Expr1, _Expr2> _Op;
4571    return __val_expr<_Op>(_Op(greater_equal<value_type>(), __x, __y));
4572}
4573
4574template<class _Expr>
4575inline _LIBCPP_INLINE_VISIBILITY
4576typename enable_if
4577<
4578    __is_val_expr<_Expr>::value,
4579    __val_expr<_BinaryOp<greater_equal<typename _Expr::value_type>,
4580               _Expr, __scalar_expr<typename _Expr::value_type> > >
4581>::type
4582operator>=(const _Expr& __x, const typename _Expr::value_type& __y)
4583{
4584    typedef typename _Expr::value_type value_type;
4585    typedef _BinaryOp<greater_equal<value_type>, _Expr, __scalar_expr<value_type> > _Op;
4586    return __val_expr<_Op>(_Op(greater_equal<value_type>(),
4587                           __x, __scalar_expr<value_type>(__y, __x.size())));
4588}
4589
4590template<class _Expr>
4591inline _LIBCPP_INLINE_VISIBILITY
4592typename enable_if
4593<
4594    __is_val_expr<_Expr>::value,
4595    __val_expr<_BinaryOp<greater_equal<typename _Expr::value_type>,
4596               __scalar_expr<typename _Expr::value_type>, _Expr> >
4597>::type
4598operator>=(const typename _Expr::value_type& __x, const _Expr& __y)
4599{
4600    typedef typename _Expr::value_type value_type;
4601    typedef _BinaryOp<greater_equal<value_type>, __scalar_expr<value_type>, _Expr> _Op;
4602    return __val_expr<_Op>(_Op(greater_equal<value_type>(),
4603                           __scalar_expr<value_type>(__x, __y.size()), __y));
4604}
4605
4606template<class _Expr>
4607inline _LIBCPP_INLINE_VISIBILITY
4608typename enable_if
4609<
4610    __is_val_expr<_Expr>::value,
4611    __val_expr<_UnaryOp<__abs_expr<typename _Expr::value_type>, _Expr> >
4612>::type
4613abs(const _Expr& __x)
4614{
4615    typedef typename _Expr::value_type value_type;
4616    typedef _UnaryOp<__abs_expr<value_type>, _Expr> _Op;
4617    return __val_expr<_Op>(_Op(__abs_expr<value_type>(), __x));
4618}
4619
4620template<class _Expr>
4621inline _LIBCPP_INLINE_VISIBILITY
4622typename enable_if
4623<
4624    __is_val_expr<_Expr>::value,
4625    __val_expr<_UnaryOp<__acos_expr<typename _Expr::value_type>, _Expr> >
4626>::type
4627acos(const _Expr& __x)
4628{
4629    typedef typename _Expr::value_type value_type;
4630    typedef _UnaryOp<__acos_expr<value_type>, _Expr> _Op;
4631    return __val_expr<_Op>(_Op(__acos_expr<value_type>(), __x));
4632}
4633
4634template<class _Expr>
4635inline _LIBCPP_INLINE_VISIBILITY
4636typename enable_if
4637<
4638    __is_val_expr<_Expr>::value,
4639    __val_expr<_UnaryOp<__asin_expr<typename _Expr::value_type>, _Expr> >
4640>::type
4641asin(const _Expr& __x)
4642{
4643    typedef typename _Expr::value_type value_type;
4644    typedef _UnaryOp<__asin_expr<value_type>, _Expr> _Op;
4645    return __val_expr<_Op>(_Op(__asin_expr<value_type>(), __x));
4646}
4647
4648template<class _Expr>
4649inline _LIBCPP_INLINE_VISIBILITY
4650typename enable_if
4651<
4652    __is_val_expr<_Expr>::value,
4653    __val_expr<_UnaryOp<__atan_expr<typename _Expr::value_type>, _Expr> >
4654>::type
4655atan(const _Expr& __x)
4656{
4657    typedef typename _Expr::value_type value_type;
4658    typedef _UnaryOp<__atan_expr<value_type>, _Expr> _Op;
4659    return __val_expr<_Op>(_Op(__atan_expr<value_type>(), __x));
4660}
4661
4662template<class _Expr1, class _Expr2>
4663inline _LIBCPP_INLINE_VISIBILITY
4664typename enable_if
4665<
4666    __is_val_expr<_Expr1>::value && __is_val_expr<_Expr2>::value,
4667    __val_expr<_BinaryOp<__atan2_expr<typename _Expr1::value_type>, _Expr1, _Expr2> >
4668>::type
4669atan2(const _Expr1& __x, const _Expr2& __y)
4670{
4671    typedef typename _Expr1::value_type value_type;
4672    typedef _BinaryOp<__atan2_expr<value_type>, _Expr1, _Expr2> _Op;
4673    return __val_expr<_Op>(_Op(__atan2_expr<value_type>(), __x, __y));
4674}
4675
4676template<class _Expr>
4677inline _LIBCPP_INLINE_VISIBILITY
4678typename enable_if
4679<
4680    __is_val_expr<_Expr>::value,
4681    __val_expr<_BinaryOp<__atan2_expr<typename _Expr::value_type>,
4682               _Expr, __scalar_expr<typename _Expr::value_type> > >
4683>::type
4684atan2(const _Expr& __x, const typename _Expr::value_type& __y)
4685{
4686    typedef typename _Expr::value_type value_type;
4687    typedef _BinaryOp<__atan2_expr<value_type>, _Expr, __scalar_expr<value_type> > _Op;
4688    return __val_expr<_Op>(_Op(__atan2_expr<value_type>(),
4689                           __x, __scalar_expr<value_type>(__y, __x.size())));
4690}
4691
4692template<class _Expr>
4693inline _LIBCPP_INLINE_VISIBILITY
4694typename enable_if
4695<
4696    __is_val_expr<_Expr>::value,
4697    __val_expr<_BinaryOp<__atan2_expr<typename _Expr::value_type>,
4698               __scalar_expr<typename _Expr::value_type>, _Expr> >
4699>::type
4700atan2(const typename _Expr::value_type& __x, const _Expr& __y)
4701{
4702    typedef typename _Expr::value_type value_type;
4703    typedef _BinaryOp<__atan2_expr<value_type>, __scalar_expr<value_type>, _Expr> _Op;
4704    return __val_expr<_Op>(_Op(__atan2_expr<value_type>(),
4705                           __scalar_expr<value_type>(__x, __y.size()), __y));
4706}
4707
4708template<class _Expr>
4709inline _LIBCPP_INLINE_VISIBILITY
4710typename enable_if
4711<
4712    __is_val_expr<_Expr>::value,
4713    __val_expr<_UnaryOp<__cos_expr<typename _Expr::value_type>, _Expr> >
4714>::type
4715cos(const _Expr& __x)
4716{
4717    typedef typename _Expr::value_type value_type;
4718    typedef _UnaryOp<__cos_expr<value_type>, _Expr> _Op;
4719    return __val_expr<_Op>(_Op(__cos_expr<value_type>(), __x));
4720}
4721
4722template<class _Expr>
4723inline _LIBCPP_INLINE_VISIBILITY
4724typename enable_if
4725<
4726    __is_val_expr<_Expr>::value,
4727    __val_expr<_UnaryOp<__cosh_expr<typename _Expr::value_type>, _Expr> >
4728>::type
4729cosh(const _Expr& __x)
4730{
4731    typedef typename _Expr::value_type value_type;
4732    typedef _UnaryOp<__cosh_expr<value_type>, _Expr> _Op;
4733    return __val_expr<_Op>(_Op(__cosh_expr<value_type>(), __x));
4734}
4735
4736template<class _Expr>
4737inline _LIBCPP_INLINE_VISIBILITY
4738typename enable_if
4739<
4740    __is_val_expr<_Expr>::value,
4741    __val_expr<_UnaryOp<__exp_expr<typename _Expr::value_type>, _Expr> >
4742>::type
4743exp(const _Expr& __x)
4744{
4745    typedef typename _Expr::value_type value_type;
4746    typedef _UnaryOp<__exp_expr<value_type>, _Expr> _Op;
4747    return __val_expr<_Op>(_Op(__exp_expr<value_type>(), __x));
4748}
4749
4750template<class _Expr>
4751inline _LIBCPP_INLINE_VISIBILITY
4752typename enable_if
4753<
4754    __is_val_expr<_Expr>::value,
4755    __val_expr<_UnaryOp<__log_expr<typename _Expr::value_type>, _Expr> >
4756>::type
4757log(const _Expr& __x)
4758{
4759    typedef typename _Expr::value_type value_type;
4760    typedef _UnaryOp<__log_expr<value_type>, _Expr> _Op;
4761    return __val_expr<_Op>(_Op(__log_expr<value_type>(), __x));
4762}
4763
4764template<class _Expr>
4765inline _LIBCPP_INLINE_VISIBILITY
4766typename enable_if
4767<
4768    __is_val_expr<_Expr>::value,
4769    __val_expr<_UnaryOp<__log10_expr<typename _Expr::value_type>, _Expr> >
4770>::type
4771log10(const _Expr& __x)
4772{
4773    typedef typename _Expr::value_type value_type;
4774    typedef _UnaryOp<__log10_expr<value_type>, _Expr> _Op;
4775    return __val_expr<_Op>(_Op(__log10_expr<value_type>(), __x));
4776}
4777
4778template<class _Expr1, class _Expr2>
4779inline _LIBCPP_INLINE_VISIBILITY
4780typename enable_if
4781<
4782    __is_val_expr<_Expr1>::value && __is_val_expr<_Expr2>::value,
4783    __val_expr<_BinaryOp<__pow_expr<typename _Expr1::value_type>, _Expr1, _Expr2> >
4784>::type
4785pow(const _Expr1& __x, const _Expr2& __y)
4786{
4787    typedef typename _Expr1::value_type value_type;
4788    typedef _BinaryOp<__pow_expr<value_type>, _Expr1, _Expr2> _Op;
4789    return __val_expr<_Op>(_Op(__pow_expr<value_type>(), __x, __y));
4790}
4791
4792template<class _Expr>
4793inline _LIBCPP_INLINE_VISIBILITY
4794typename enable_if
4795<
4796    __is_val_expr<_Expr>::value,
4797    __val_expr<_BinaryOp<__pow_expr<typename _Expr::value_type>,
4798               _Expr, __scalar_expr<typename _Expr::value_type> > >
4799>::type
4800pow(const _Expr& __x, const typename _Expr::value_type& __y)
4801{
4802    typedef typename _Expr::value_type value_type;
4803    typedef _BinaryOp<__pow_expr<value_type>, _Expr, __scalar_expr<value_type> > _Op;
4804    return __val_expr<_Op>(_Op(__pow_expr<value_type>(),
4805                           __x, __scalar_expr<value_type>(__y, __x.size())));
4806}
4807
4808template<class _Expr>
4809inline _LIBCPP_INLINE_VISIBILITY
4810typename enable_if
4811<
4812    __is_val_expr<_Expr>::value,
4813    __val_expr<_BinaryOp<__pow_expr<typename _Expr::value_type>,
4814               __scalar_expr<typename _Expr::value_type>, _Expr> >
4815>::type
4816pow(const typename _Expr::value_type& __x, const _Expr& __y)
4817{
4818    typedef typename _Expr::value_type value_type;
4819    typedef _BinaryOp<__pow_expr<value_type>, __scalar_expr<value_type>, _Expr> _Op;
4820    return __val_expr<_Op>(_Op(__pow_expr<value_type>(),
4821                           __scalar_expr<value_type>(__x, __y.size()), __y));
4822}
4823
4824template<class _Expr>
4825inline _LIBCPP_INLINE_VISIBILITY
4826typename enable_if
4827<
4828    __is_val_expr<_Expr>::value,
4829    __val_expr<_UnaryOp<__sin_expr<typename _Expr::value_type>, _Expr> >
4830>::type
4831sin(const _Expr& __x)
4832{
4833    typedef typename _Expr::value_type value_type;
4834    typedef _UnaryOp<__sin_expr<value_type>, _Expr> _Op;
4835    return __val_expr<_Op>(_Op(__sin_expr<value_type>(), __x));
4836}
4837
4838template<class _Expr>
4839inline _LIBCPP_INLINE_VISIBILITY
4840typename enable_if
4841<
4842    __is_val_expr<_Expr>::value,
4843    __val_expr<_UnaryOp<__sinh_expr<typename _Expr::value_type>, _Expr> >
4844>::type
4845sinh(const _Expr& __x)
4846{
4847    typedef typename _Expr::value_type value_type;
4848    typedef _UnaryOp<__sinh_expr<value_type>, _Expr> _Op;
4849    return __val_expr<_Op>(_Op(__sinh_expr<value_type>(), __x));
4850}
4851
4852template<class _Expr>
4853inline _LIBCPP_INLINE_VISIBILITY
4854typename enable_if
4855<
4856    __is_val_expr<_Expr>::value,
4857    __val_expr<_UnaryOp<__sqrt_expr<typename _Expr::value_type>, _Expr> >
4858>::type
4859sqrt(const _Expr& __x)
4860{
4861    typedef typename _Expr::value_type value_type;
4862    typedef _UnaryOp<__sqrt_expr<value_type>, _Expr> _Op;
4863    return __val_expr<_Op>(_Op(__sqrt_expr<value_type>(), __x));
4864}
4865
4866template<class _Expr>
4867inline _LIBCPP_INLINE_VISIBILITY
4868typename enable_if
4869<
4870    __is_val_expr<_Expr>::value,
4871    __val_expr<_UnaryOp<__tan_expr<typename _Expr::value_type>, _Expr> >
4872>::type
4873tan(const _Expr& __x)
4874{
4875    typedef typename _Expr::value_type value_type;
4876    typedef _UnaryOp<__tan_expr<value_type>, _Expr> _Op;
4877    return __val_expr<_Op>(_Op(__tan_expr<value_type>(), __x));
4878}
4879
4880template<class _Expr>
4881inline _LIBCPP_INLINE_VISIBILITY
4882typename enable_if
4883<
4884    __is_val_expr<_Expr>::value,
4885    __val_expr<_UnaryOp<__tanh_expr<typename _Expr::value_type>, _Expr> >
4886>::type
4887tanh(const _Expr& __x)
4888{
4889    typedef typename _Expr::value_type value_type;
4890    typedef _UnaryOp<__tanh_expr<value_type>, _Expr> _Op;
4891    return __val_expr<_Op>(_Op(__tanh_expr<value_type>(), __x));
4892}
4893
4894template <class _Tp>
4895inline _LIBCPP_INLINE_VISIBILITY
4896_Tp*
4897begin(valarray<_Tp>& __v)
4898{
4899    return __v.__begin_;
4900}
4901
4902template <class _Tp>
4903inline _LIBCPP_INLINE_VISIBILITY
4904const _Tp*
4905begin(const valarray<_Tp>& __v)
4906{
4907    return __v.__begin_;
4908}
4909
4910template <class _Tp>
4911inline _LIBCPP_INLINE_VISIBILITY
4912_Tp*
4913end(valarray<_Tp>& __v)
4914{
4915    return __v.__end_;
4916}
4917
4918template <class _Tp>
4919inline _LIBCPP_INLINE_VISIBILITY
4920const _Tp*
4921end(const valarray<_Tp>& __v)
4922{
4923    return __v.__end_;
4924}
4925
4926_LIBCPP_END_NAMESPACE_STD
4927
4928_LIBCPP_POP_MACROS
4929
4930#endif  // _LIBCPP_VALARRAY
4931