1 // -*- C++ -*- 2 //===----------------------------------------------------------------------===// 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___IOS_FPOS_H 11 #define _LIBCPP___IOS_FPOS_H 12 13 #include <__config> 14 #include <iosfwd> 15 16 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17 # pragma GCC system_header 18 #endif 19 20 _LIBCPP_BEGIN_NAMESPACE_STD 21 22 template <class _StateT> 23 class _LIBCPP_TEMPLATE_VIS fpos { 24 private: 25 _StateT __st_; 26 streamoff __off_; 27 28 public: 29 _LIBCPP_HIDE_FROM_ABI fpos(streamoff __off = streamoff()) : __st_(), __off_(__off) {} 30 31 _LIBCPP_HIDE_FROM_ABI operator streamoff() const { return __off_; } 32 33 _LIBCPP_HIDE_FROM_ABI _StateT state() const { return __st_; } 34 _LIBCPP_HIDE_FROM_ABI void state(_StateT __st) { __st_ = __st; } 35 36 _LIBCPP_HIDE_FROM_ABI fpos& operator+=(streamoff __off) { 37 __off_ += __off; 38 return *this; 39 } 40 41 _LIBCPP_HIDE_FROM_ABI fpos operator+(streamoff __off) const { 42 fpos __t(*this); 43 __t += __off; 44 return __t; 45 } 46 47 _LIBCPP_HIDE_FROM_ABI fpos& operator-=(streamoff __off) { 48 __off_ -= __off; 49 return *this; 50 } 51 52 _LIBCPP_HIDE_FROM_ABI fpos operator-(streamoff __off) const { 53 fpos __t(*this); 54 __t -= __off; 55 return __t; 56 } 57 }; 58 59 template <class _StateT> 60 inline _LIBCPP_HIDE_FROM_ABI 61 streamoff operator-(const fpos<_StateT>& __x, const fpos<_StateT>& __y) { 62 return streamoff(__x) - streamoff(__y); 63 } 64 65 template <class _StateT> 66 inline _LIBCPP_HIDE_FROM_ABI 67 bool operator==(const fpos<_StateT>& __x, const fpos<_StateT>& __y) { 68 return streamoff(__x) == streamoff(__y); 69 } 70 71 template <class _StateT> 72 inline _LIBCPP_HIDE_FROM_ABI 73 bool operator!=(const fpos<_StateT>& __x, const fpos<_StateT>& __y) { 74 return streamoff(__x) != streamoff(__y); 75 } 76 77 _LIBCPP_END_NAMESPACE_STD 78 79 #endif // _LIBCPP___IOS_FPOS_H 80