xref: /freebsd/contrib/llvm-project/libcxx/include/algorithm (revision 972a253a57b6f144b0e4a3e2080a2a0076ec55a0)
10b57cec5SDimitry Andric// -*- C++ -*-
2349cc55cSDimitry Andric//===----------------------------------------------------------------------===//
30b57cec5SDimitry Andric//
40b57cec5SDimitry Andric// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
50b57cec5SDimitry Andric// See https://llvm.org/LICENSE.txt for license information.
60b57cec5SDimitry Andric// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
70b57cec5SDimitry Andric//
80b57cec5SDimitry Andric//===----------------------------------------------------------------------===//
90b57cec5SDimitry Andric
100b57cec5SDimitry Andric#ifndef _LIBCPP_ALGORITHM
110b57cec5SDimitry Andric#define _LIBCPP_ALGORITHM
120b57cec5SDimitry Andric
130b57cec5SDimitry Andric/*
140b57cec5SDimitry Andric    algorithm synopsis
150b57cec5SDimitry Andric
160b57cec5SDimitry Andric#include <initializer_list>
170b57cec5SDimitry Andric
180b57cec5SDimitry Andricnamespace std
190b57cec5SDimitry Andric{
200b57cec5SDimitry Andric
2104eeddc0SDimitry Andricnamespace ranges {
2281ad6265SDimitry Andric
2381ad6265SDimitry Andric  // [algorithms.results], algorithm result types
2481ad6265SDimitry Andric  template <class I, class F>
2581ad6265SDimitry Andric    struct in_fun_result;     // since C++20
2681ad6265SDimitry Andric
2704eeddc0SDimitry Andric  template <class I1, class I2>
2804eeddc0SDimitry Andric    struct in_in_result;      // since C++20
291fd87a68SDimitry Andric
3081ad6265SDimitry Andric  template <class I, class O>
3181ad6265SDimitry Andric    struct in_out_result;  // since C++20
3281ad6265SDimitry Andric
331fd87a68SDimitry Andric  template <class I1, class I2, class O>
341fd87a68SDimitry Andric    struct in_in_out_result;  // since C++20
3581ad6265SDimitry Andric
3681ad6265SDimitry Andric  template <class I, class O1, class O2>
3781ad6265SDimitry Andric    struct in_out_out_result; // since C++20
3881ad6265SDimitry Andric
3981ad6265SDimitry Andric  template <class I1, class I2>
4081ad6265SDimitry Andric    struct min_max_result;    // since C++20
4181ad6265SDimitry Andric
4281ad6265SDimitry Andric  template <class I>
4381ad6265SDimitry Andric    struct in_found_result;   // since C++20
4481ad6265SDimitry Andric
4581ad6265SDimitry Andric  template<forward_iterator I, sentinel_for<I> S, class Proj = identity,
4681ad6265SDimitry Andric    indirect_strict_weak_order<projected<I, Proj>> Comp = ranges::less>             // since C++20
4781ad6265SDimitry Andric  constexpr I min_element(I first, S last, Comp comp = {}, Proj proj = {});
4881ad6265SDimitry Andric
4981ad6265SDimitry Andric  template<forward_range R, class Proj = identity,
5081ad6265SDimitry Andric    indirect_strict_weak_order<projected<iterator_t<R>, Proj>> Comp = ranges::less> // since C++20
5181ad6265SDimitry Andric  constexpr borrowed_iterator_t<R> min_element(R&& r, Comp comp = {}, Proj proj = {});
5281ad6265SDimitry Andric
5381ad6265SDimitry Andric  template<forward_iterator I, sentinel_for<I> S, class Proj = identity,
5481ad6265SDimitry Andric    indirect_strict_weak_order<projected<I, Proj>> Comp = ranges::less>
5581ad6265SDimitry Andric  constexpr I ranges::max_element(I first, S last, Comp comp = {}, Proj proj = {});                        // since C++20
5681ad6265SDimitry Andric
5781ad6265SDimitry Andric  template<forward_range R, class Proj = identity,
5881ad6265SDimitry Andric    indirect_strict_weak_order<projected<iterator_t<R>, Proj>> Comp = ranges::less>
5981ad6265SDimitry Andric  constexpr borrowed_iterator_t<R> ranges::max_element(R&& r, Comp comp = {}, Proj proj = {});             // since C++20
6081ad6265SDimitry Andric
6181ad6265SDimitry Andric  template<class I1, class I2>
6281ad6265SDimitry Andric    using mismatch_result = in_in_result<I1, I2>;
6381ad6265SDimitry Andric
6481ad6265SDimitry Andric  template <input_iterator I1, sentinel_for<_I1> S1, input_iterator I2, sentinel_for<_I2> S2,
6581ad6265SDimitry Andric          class Pred = ranges::equal_to, class Proj1 = identity, class Proj2 = identity>
6681ad6265SDimitry Andric    requires indirectly_comparable<I1, I2, Pred, Proj1, Proj2>
6781ad6265SDimitry Andric  constexpr mismatch_result<_I1, _I2>
6881ad6265SDimitry Andric  mismatch()(I1 first1, S1 last1, I2 first2, S2 last2, Pred pred = {}, Proj1 proj1 = {}, Proj2 proj2 = {}) // since C++20
6981ad6265SDimitry Andric
7081ad6265SDimitry Andric  template <input_range R1, input_range R2,
7181ad6265SDimitry Andric          class Pred = ranges::equal_to, class Proj1 = identity, class Proj2 = identity>
7281ad6265SDimitry Andric    requires indirectly_comparable<iterator_t<R1>, iterator_t<R2>, Pred, Proj1, Proj2>
7381ad6265SDimitry Andric  constexpr mismatch_result<borrowed_iterator_t<R1>, borrowed_iterator_t<R2>>
7481ad6265SDimitry Andric  mismatch(R1&& r1, R2&& r2, Pred pred = {}, Proj1 proj1 = {}, Proj2 proj2 = {})                           // since C++20
7581ad6265SDimitry Andric
7681ad6265SDimitry Andric    requires indirect_binary_predicate<ranges::equal_to, projected<I, Proj>, const T*>
7781ad6265SDimitry Andric    constexpr I find(I first, S last, const T& value, Proj proj = {});              // since C++20
7881ad6265SDimitry Andric
7981ad6265SDimitry Andric  template<input_range R, class T, class Proj = identity>
8081ad6265SDimitry Andric    requires indirect_binary_predicate<ranges::equal_to, projected<iterator_t<R>, Proj>, const T*>
8181ad6265SDimitry Andric    constexpr borrowed_iterator_t<R>
8281ad6265SDimitry Andric      find(R&& r, const T& value, Proj proj = {});                                  // since C++20
8381ad6265SDimitry Andric
8481ad6265SDimitry Andric  template<input_iterator I, sentinel_for<I> S, class Proj = identity,
8581ad6265SDimitry Andric           indirect_unary_predicate<projected<I, Proj>> Pred>
8681ad6265SDimitry Andric    constexpr I find_if(I first, S last, Pred pred, Proj proj = {});                // since C++20
8781ad6265SDimitry Andric
8881ad6265SDimitry Andric  template<input_range R, class Proj = identity,
8981ad6265SDimitry Andric           indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
9081ad6265SDimitry Andric    constexpr borrowed_iterator_t<R>
9181ad6265SDimitry Andric      find_if(R&& r, Pred pred, Proj proj = {});                                    // since C++20
9281ad6265SDimitry Andric
9381ad6265SDimitry Andric  template<input_iterator I, sentinel_for<I> S, class Proj = identity,
9481ad6265SDimitry Andric           indirect_unary_predicate<projected<I, Proj>> Pred>
9581ad6265SDimitry Andric    constexpr I find_if_not(I first, S last, Pred pred, Proj proj = {});            // since C++20
9681ad6265SDimitry Andric
9781ad6265SDimitry Andric  template<input_range R, class Proj = identity,
9881ad6265SDimitry Andric           indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
9981ad6265SDimitry Andric    constexpr borrowed_iterator_t<R>
10081ad6265SDimitry Andric      find_if_not(R&& r, Pred pred, Proj proj = {});                                // since C++20
10181ad6265SDimitry Andric
10281ad6265SDimitry Andric  template<class T, class Proj = identity,
10381ad6265SDimitry Andric           indirect_strict_weak_order<projected<const T*, Proj>> Comp = ranges::less>
10481ad6265SDimitry Andric    constexpr const T& min(const T& a, const T& b, Comp comp = {}, Proj proj = {}); // since C++20
10581ad6265SDimitry Andric
10681ad6265SDimitry Andric  template<copyable T, class Proj = identity,
10781ad6265SDimitry Andric           indirect_strict_weak_order<projected<const T*, Proj>> Comp = ranges::less>
10881ad6265SDimitry Andric    constexpr T min(initializer_list<T> r, Comp comp = {}, Proj proj = {});         // since C++20
10981ad6265SDimitry Andric
11081ad6265SDimitry Andric template<input_range R, class Proj = identity,
11181ad6265SDimitry Andric          indirect_strict_weak_order<projected<iterator_t<R>, Proj>> Comp = ranges::less>
11281ad6265SDimitry Andric   requires indirectly_copyable_storable<iterator_t<R>, range_value_t<R>*>
11381ad6265SDimitry Andric   constexpr range_value_t<R>
11481ad6265SDimitry Andric     min(R&& r, Comp comp = {}, Proj proj = {});                                    // since C++20
11581ad6265SDimitry Andric
11681ad6265SDimitry Andric  template<class T, class Proj = identity,
11781ad6265SDimitry Andric           indirect_strict_weak_order<projected<const T*, Proj>> Comp = ranges::less>
11881ad6265SDimitry Andric    constexpr const T& max(const T& a, const T& b, Comp comp = {}, Proj proj = {}); // since C++20
11981ad6265SDimitry Andric
12081ad6265SDimitry Andric  template<copyable T, class Proj = identity,
12181ad6265SDimitry Andric           indirect_strict_weak_order<projected<const T*, Proj>> Comp = ranges::less>
12281ad6265SDimitry Andric    constexpr T max(initializer_list<T> r, Comp comp = {}, Proj proj = {});         // since C++20
12381ad6265SDimitry Andric
12481ad6265SDimitry Andric  template<input_range R, class Proj = identity,
12581ad6265SDimitry Andric           indirect_strict_weak_order<projected<iterator_t<R>, Proj>> Comp = ranges::less>
12681ad6265SDimitry Andric    requires indirectly_copyable_storable<iterator_t<R>, range_value_t<R>*>
12781ad6265SDimitry Andric    constexpr range_value_t<R>
12881ad6265SDimitry Andric      max(R&& r, Comp comp = {}, Proj proj = {});                                   // since C++20
12981ad6265SDimitry Andric
13081ad6265SDimitry Andric  template<class I, class O>
13181ad6265SDimitry Andric    using unary_transform_result = in_out_result<I, O>;                             // since C++20
13281ad6265SDimitry Andric
13381ad6265SDimitry Andric  template<class I1, class I2, class O>
13481ad6265SDimitry Andric    using binary_transform_result = in_in_out_result<I1, I2, O>;                    // since C++20
13581ad6265SDimitry Andric
13681ad6265SDimitry Andric  template<input_iterator I, sentinel_for<I> S, weakly_incrementable O,
13781ad6265SDimitry Andric           copy_constructible F, class Proj = identity>
13881ad6265SDimitry Andric    requires indirectly_writable<O, indirect_result_t<F&, projected<I, Proj>>>
13981ad6265SDimitry Andric    constexpr ranges::unary_transform_result<I, O>
14081ad6265SDimitry Andric      transform(I first1, S last1, O result, F op, Proj proj = {});                 // since C++20
14181ad6265SDimitry Andric
14281ad6265SDimitry Andric  template<input_range R, weakly_incrementable O, copy_constructible F,
14381ad6265SDimitry Andric           class Proj = identity>
14481ad6265SDimitry Andric    requires indirectly_writable<O, indirect_result_t<F&, projected<iterator_t<R>, Proj>>>
14581ad6265SDimitry Andric    constexpr ranges::unary_transform_result<borrowed_iterator_t<R>, O>
14681ad6265SDimitry Andric      transform(R&& r, O result, F op, Proj proj = {});                             // since C++20
14781ad6265SDimitry Andric
14881ad6265SDimitry Andric  template<input_iterator I1, sentinel_for<I1> S1, input_iterator I2, sentinel_for<I2> S2,
14981ad6265SDimitry Andric           weakly_incrementable O, copy_constructible F, class Proj1 = identity,
15081ad6265SDimitry Andric           class Proj2 = identity>
15181ad6265SDimitry Andric    requires indirectly_writable<O, indirect_result_t<F&, projected<I1, Proj1>,
15281ad6265SDimitry Andric                                           projected<I2, Proj2>>>
15381ad6265SDimitry Andric    constexpr ranges::binary_transform_result<I1, I2, O>
15481ad6265SDimitry Andric      transform(I1 first1, S1 last1, I2 first2, S2 last2, O result,
15581ad6265SDimitry Andric                        F binary_op, Proj1 proj1 = {}, Proj2 proj2 = {});           // since C++20
15681ad6265SDimitry Andric
15781ad6265SDimitry Andric  template<input_range R1, input_range R2, weakly_incrementable O,
15881ad6265SDimitry Andric           copy_constructible F, class Proj1 = identity, class Proj2 = identity>
15981ad6265SDimitry Andric    requires indirectly_writable<O, indirect_result_t<F&, projected<iterator_t<R1>, Proj1>,
16081ad6265SDimitry Andric                                           projected<iterator_t<R2>, Proj2>>>
16181ad6265SDimitry Andric    constexpr ranges::binary_transform_result<borrowed_iterator_t<R1>, borrowed_iterator_t<R2>, O>
16281ad6265SDimitry Andric      transform(R1&& r1, R2&& r2, O result,
16381ad6265SDimitry Andric                        F binary_op, Proj1 proj1 = {}, Proj2 proj2 = {});           // since C++20
16481ad6265SDimitry Andric
16581ad6265SDimitry Andric  template<input_iterator I, sentinel_for<I> S, class T, class Proj = identity>
16681ad6265SDimitry Andric    requires indirect_binary_predicate<ranges::equal_to, projected<I, Proj>, const T*>
16781ad6265SDimitry Andric    constexpr iter_difference_t<I>
16881ad6265SDimitry Andric      count(I first, S last, const T& value, Proj proj = {});                       // since C++20
16981ad6265SDimitry Andric
17081ad6265SDimitry Andric  template<input_range R, class T, class Proj = identity>
17181ad6265SDimitry Andric    requires indirect_binary_predicate<ranges::equal_to, projected<iterator_t<R>, Proj>, const T*>
17281ad6265SDimitry Andric    constexpr range_difference_t<R>
17381ad6265SDimitry Andric      count(R&& r, const T& value, Proj proj = {});                                 // since C++20
17481ad6265SDimitry Andric
17581ad6265SDimitry Andric  template<input_iterator I, sentinel_for<I> S, class Proj = identity,
17681ad6265SDimitry Andric           indirect_unary_predicate<projected<I, Proj>> Pred>
17781ad6265SDimitry Andric    constexpr iter_difference_t<I>
17881ad6265SDimitry Andric      count_if(I first, S last, Pred pred, Proj proj = {});                         // since C++20
17981ad6265SDimitry Andric
18081ad6265SDimitry Andric  template<input_range R, class Proj = identity,
18181ad6265SDimitry Andric           indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
18281ad6265SDimitry Andric    constexpr range_difference_t<R>
18381ad6265SDimitry Andric      count_if(R&& r, Pred pred, Proj proj = {});                                   // since C++20
18481ad6265SDimitry Andric
18581ad6265SDimitry Andric  template<class T>
18681ad6265SDimitry Andric  using minmax_result = min_max_result<T>;
18781ad6265SDimitry Andric
18881ad6265SDimitry Andric  template<class T, class Proj = identity,
18981ad6265SDimitry Andric           indirect_strict_weak_order<projected<const T*, Proj>> Comp = ranges::less>
19081ad6265SDimitry Andric    constexpr ranges::minmax_result<const T&>
19181ad6265SDimitry Andric      minmax(const T& a, const T& b, Comp comp = {}, Proj proj = {});                     // since C++20
19281ad6265SDimitry Andric
19381ad6265SDimitry Andric  template<copyable T, class Proj = identity,
19481ad6265SDimitry Andric           indirect_strict_weak_order<projected<const T*, Proj>> Comp = ranges::less>
19581ad6265SDimitry Andric    constexpr ranges::minmax_result<T>
19681ad6265SDimitry Andric      minmax(initializer_list<T> r, Comp comp = {}, Proj proj = {});                      // since C++20
19781ad6265SDimitry Andric
19881ad6265SDimitry Andric  template<input_range R, class Proj = identity,
19981ad6265SDimitry Andric           indirect_strict_weak_order<projected<iterator_t<R>, Proj>> Comp = ranges::less>
20081ad6265SDimitry Andric    requires indirectly_copyable_storable<iterator_t<R>, range_value_t<R>*>
20181ad6265SDimitry Andric    constexpr ranges::minmax_result<range_value_t<R>>
20281ad6265SDimitry Andric      minmax(R&& r, Comp comp = {}, Proj proj = {});                                      // since C++20
20381ad6265SDimitry Andric
20481ad6265SDimitry Andric  template<class I>
20581ad6265SDimitry Andric  using minmax_element_result = min_max_result<I>;
20681ad6265SDimitry Andric
20781ad6265SDimitry Andric  template<forward_iterator I, sentinel_for<I> S, class Proj = identity,
20881ad6265SDimitry Andric           indirect_strict_weak_order<projected<I, Proj>> Comp = ranges::less>
20981ad6265SDimitry Andric    constexpr ranges::minmax_element_result<I>
21081ad6265SDimitry Andric      minmax_element(I first, S last, Comp comp = {}, Proj proj = {});                    // since C++20
21181ad6265SDimitry Andric
21281ad6265SDimitry Andric  template<forward_range R, class Proj = identity,
21381ad6265SDimitry Andric           indirect_strict_weak_order<projected<iterator_t<R>, Proj>> Comp = ranges::less>
21481ad6265SDimitry Andric    constexpr ranges::minmax_element_result<borrowed_iterator_t<R>>
21581ad6265SDimitry Andric      minmax_element(R&& r, Comp comp = {}, Proj proj = {});                              // since C++20
21681ad6265SDimitry Andric
21781ad6265SDimitry Andric  template<class I, class O>
21881ad6265SDimitry Andric    using copy_result = in_out_result<I, O>;                                              // since C++20
21981ad6265SDimitry Andric
22081ad6265SDimitry Andric  template<class I, class O>
22181ad6265SDimitry Andric    using copy_n_result = in_out_result<I, O>;                                            // since C++20
22281ad6265SDimitry Andric
22381ad6265SDimitry Andric  template<class I, class O>
22481ad6265SDimitry Andric    using copy_if_result = in_out_result<I, O>;                                             // since C++20
22581ad6265SDimitry Andric
22681ad6265SDimitry Andric  template<class I1, class I2>
22781ad6265SDimitry Andric    using copy_backward_result = in_out_result<I1, I2>;                                     // since C++20
22881ad6265SDimitry Andric
22981ad6265SDimitry Andric  template<input_iterator I, sentinel_for<I> S, weakly_incrementable O>
23081ad6265SDimitry Andric    requires indirectly_copyable<I, O>
23181ad6265SDimitry Andric    constexpr ranges::copy_result<I, O> ranges::copy(I first, S last, O result);            // since C++20
23281ad6265SDimitry Andric
23381ad6265SDimitry Andric  template<input_range R, weakly_incrementable O>
23481ad6265SDimitry Andric    requires indirectly_copyable<iterator_t<R>, O>
23581ad6265SDimitry Andric    constexpr ranges::copy_result<borrowed_iterator_t<R>, O> ranges::copy(R&& r, O result); // since C++20
23681ad6265SDimitry Andric
23781ad6265SDimitry Andric  template<input_iterator I, weakly_incrementable O>
23881ad6265SDimitry Andric    requires indirectly_copyable<I, O>
23981ad6265SDimitry Andric    constexpr ranges::copy_n_result<I, O>
24081ad6265SDimitry Andric      ranges::copy_n(I first, iter_difference_t<I> n, O result);                            // since C++20
24181ad6265SDimitry Andric
24281ad6265SDimitry Andric  template<input_iterator I, sentinel_for<I> S, weakly_incrementable O, class Proj = identity,
24381ad6265SDimitry Andric           indirect_unary_predicate<projected<I, Proj>> Pred>
24481ad6265SDimitry Andric    requires indirectly_copyable<I, O>
24581ad6265SDimitry Andric    constexpr ranges::copy_if_result<I, O>
24681ad6265SDimitry Andric      ranges::copy_if(I first, S last, O result, Pred pred, Proj proj = {});                // since C++20
24781ad6265SDimitry Andric
24881ad6265SDimitry Andric  template<input_range R, weakly_incrementable O, class Proj = identity,
24981ad6265SDimitry Andric           indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
25081ad6265SDimitry Andric    requires indirectly_copyable<iterator_t<R>, O>
25181ad6265SDimitry Andric    constexpr ranges::copy_if_result<borrowed_iterator_t<R>, O>
25281ad6265SDimitry Andric      ranges::copy_if(R&& r, O result, Pred pred, Proj proj = {});                          // since C++20
25381ad6265SDimitry Andric
25481ad6265SDimitry Andric  template<bidirectional_iterator I1, sentinel_for<I1> S1, bidirectional_iterator I2>
25581ad6265SDimitry Andric    requires indirectly_copyable<I1, I2>
25681ad6265SDimitry Andric    constexpr ranges::copy_backward_result<I1, I2>
25781ad6265SDimitry Andric      ranges::copy_backward(I1 first, S1 last, I2 result);                                  // since C++20
25881ad6265SDimitry Andric
25981ad6265SDimitry Andric  template<bidirectional_range R, bidirectional_iterator I>
26081ad6265SDimitry Andric    requires indirectly_copyable<iterator_t<R>, I>
26181ad6265SDimitry Andric    constexpr ranges::copy_backward_result<borrowed_iterator_t<R>, I>
26281ad6265SDimitry Andric      ranges::copy_backward(R&& r, I result);                                               // since C++20
26381ad6265SDimitry Andric
26481ad6265SDimitry Andric  template<class I, class F>
26581ad6265SDimitry Andric    using for_each_result = in_fun_result<I, F>;                                            // since C++20
26681ad6265SDimitry Andric
26781ad6265SDimitry Andric  template<input_iterator I, sentinel_for<I> S, class Proj = identity,
26881ad6265SDimitry Andric           indirectly_unary_invocable<projected<I, Proj>> Fun>
26981ad6265SDimitry Andric    constexpr ranges::for_each_result<I, Fun>
27081ad6265SDimitry Andric      ranges::for_each(I first, S last, Fun f, Proj proj = {});                             // since C++20
27181ad6265SDimitry Andric
27281ad6265SDimitry Andric  template<input_range R, class Proj = identity,
27381ad6265SDimitry Andric           indirectly_unary_invocable<projected<iterator_t<R>, Proj>> Fun>
27481ad6265SDimitry Andric    constexpr ranges::for_each_result<borrowed_iterator_t<R>, Fun>
27581ad6265SDimitry Andric      ranges::for_each(R&& r, Fun f, Proj proj = {});                                       // since C++20
27681ad6265SDimitry Andric
27781ad6265SDimitry Andric  template<input_iterator I, class Proj = identity,
27881ad6265SDimitry Andric           indirectly_unary_invocable<projected<I, Proj>> Fun>
27981ad6265SDimitry Andric    constexpr ranges::for_each_n_result<I, Fun>
28081ad6265SDimitry Andric      ranges::for_each_n(I first, iter_difference_t<I> n, Fun f, Proj proj = {});           // since C++20
28181ad6265SDimitry Andric
28281ad6265SDimitry Andric  template<input_iterator I, sentinel_for<I> S, class Proj = identity,
28381ad6265SDimitry Andric           indirect_unary_predicate<projected<I, Proj>> Pred>
28481ad6265SDimitry Andric    constexpr bool ranges::is_partitioned(I first, S last, Pred pred, Proj proj = {});      // since C++20
28581ad6265SDimitry Andric
28681ad6265SDimitry Andric  template<input_range R, class Proj = identity,
28781ad6265SDimitry Andric           indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
28881ad6265SDimitry Andric    constexpr bool ranges::is_partitioned(R&& r, Pred pred, Proj proj = {});                // since C++20
28981ad6265SDimitry Andric
290753f127fSDimitry Andric  template<random_access_iterator I, sentinel_for<I> S, class Comp = ranges::less,
291753f127fSDimitry Andric          class Proj = identity>
292753f127fSDimitry Andric    requires sortable<I, Comp, Proj>
293753f127fSDimitry Andric    constexpr I
294753f127fSDimitry Andric      ranges::push_heap(I first, S last, Comp comp = {}, Proj proj = {});                   // since C++20
295753f127fSDimitry Andric
296753f127fSDimitry Andric  template<random_access_range R, class Comp = ranges::less, class Proj = identity>
297753f127fSDimitry Andric    requires sortable<iterator_t<R>, Comp, Proj>
298753f127fSDimitry Andric    constexpr borrowed_iterator_t<R>
299753f127fSDimitry Andric      ranges::push_heap(R&& r, Comp comp = {}, Proj proj = {});                             // since C++20
300753f127fSDimitry Andric
301753f127fSDimitry Andric  template<random_access_iterator I, sentinel_for<I> S, class Comp = ranges::less,
302753f127fSDimitry Andric          class Proj = identity>
303753f127fSDimitry Andric    requires sortable<I, Comp, Proj>
304753f127fSDimitry Andric    constexpr I
305753f127fSDimitry Andric      ranges::pop_heap(I first, S last, Comp comp = {}, Proj proj = {});                    // since C++20
306753f127fSDimitry Andric
307753f127fSDimitry Andric  template<random_access_range R, class Comp = ranges::less, class Proj = identity>
308753f127fSDimitry Andric    requires sortable<iterator_t<R>, Comp, Proj>
309753f127fSDimitry Andric    constexpr borrowed_iterator_t<R>
310753f127fSDimitry Andric      ranges::pop_heap(R&& r, Comp comp = {}, Proj proj = {});                              // since C++20
311753f127fSDimitry Andric
312753f127fSDimitry Andric  template<random_access_iterator I, sentinel_for<I> S, class Comp = ranges::less,
313753f127fSDimitry Andric          class Proj = identity>
314753f127fSDimitry Andric    requires sortable<I, Comp, Proj>
315753f127fSDimitry Andric    constexpr I
316753f127fSDimitry Andric      ranges::make_heap(I first, S last, Comp comp = {}, Proj proj = {});                   // since C++20
317753f127fSDimitry Andric
318753f127fSDimitry Andric  template<random_access_range R, class Comp = ranges::less, class Proj = identity>
319753f127fSDimitry Andric    requires sortable<iterator_t<R>, Comp, Proj>
320753f127fSDimitry Andric    constexpr borrowed_iterator_t<R>
321753f127fSDimitry Andric      ranges::make_heap(R&& r, Comp comp = {}, Proj proj = {});                             // since C++20
322753f127fSDimitry Andric
323753f127fSDimitry Andric  template<random_access_iterator I, sentinel_for<I> S, class Comp = ranges::less,
324753f127fSDimitry Andric          class Proj = identity>
325753f127fSDimitry Andric    requires sortable<I, Comp, Proj>
326753f127fSDimitry Andric    constexpr I
327753f127fSDimitry Andric      ranges::sort_heap(I first, S last, Comp comp = {}, Proj proj = {});                   // since C++20
328753f127fSDimitry Andric
329753f127fSDimitry Andric  template<random_access_range R, class Comp = ranges::less, class Proj = identity>
330753f127fSDimitry Andric    requires sortable<iterator_t<R>, Comp, Proj>
331753f127fSDimitry Andric    constexpr borrowed_iterator_t<R>
332753f127fSDimitry Andric      ranges::sort_heap(R&& r, Comp comp = {}, Proj proj = {});                             // since C++20
333753f127fSDimitry Andric
334*972a253aSDimitry Andric  template<random_access_iterator I, sentinel_for<I> S, class Proj = identity,
335*972a253aSDimitry Andric            indirect_strict_weak_order<projected<I, Proj>> Comp = ranges::less>
336*972a253aSDimitry Andric    constexpr bool is_heap(I first, S last, Comp comp = {}, Proj proj = {});                // Since C++20
337*972a253aSDimitry Andric
338*972a253aSDimitry Andric  template<random_access_range R, class Proj = identity,
339*972a253aSDimitry Andric            indirect_strict_weak_order<projected<iterator_t<R>, Proj>> Comp = ranges::less>
340*972a253aSDimitry Andric    constexpr bool is_heap(R&& r, Comp comp = {}, Proj proj = {});                          // Since C++20
341*972a253aSDimitry Andric
342*972a253aSDimitry Andric  template<random_access_iterator I, sentinel_for<I> S, class Proj = identity,
343*972a253aSDimitry Andric           indirect_strict_weak_order<projected<I, Proj>> Comp = ranges::less>
344*972a253aSDimitry Andric    constexpr I is_heap_until(I first, S last, Comp comp = {}, Proj proj = {});             // Since C++20
345*972a253aSDimitry Andric
346*972a253aSDimitry Andric  template<random_access_range R, class Proj = identity,
347*972a253aSDimitry Andric           indirect_strict_weak_order<projected<iterator_t<R>, Proj>> Comp = ranges::less>
348*972a253aSDimitry Andric    constexpr borrowed_iterator_t<R>
349*972a253aSDimitry Andric      is_heap_until(R&& r, Comp comp = {}, Proj proj = {});                                 // Since C++20
350*972a253aSDimitry Andric
35181ad6265SDimitry Andric  template<bidirectional_iterator I, sentinel_for<I> S>
35281ad6265SDimitry Andric    requires permutable<I>
35381ad6265SDimitry Andric    constexpr I ranges::reverse(I first, S last);                                           // since C++20
35481ad6265SDimitry Andric
35581ad6265SDimitry Andric  template<bidirectional_range R>
35681ad6265SDimitry Andric    requires permutable<iterator_t<R>>
35781ad6265SDimitry Andric    constexpr borrowed_iterator_t<R> ranges::reverse(R&& r);                                // since C++20
35881ad6265SDimitry Andric
35981ad6265SDimitry Andric  template<random_access_iterator I, sentinel_for<I> S, class Comp = ranges::less,
36081ad6265SDimitry Andric            class Proj = identity>
36181ad6265SDimitry Andric    requires sortable<I, Comp, Proj>
36281ad6265SDimitry Andric    constexpr I
36381ad6265SDimitry Andric      ranges::sort(I first, S last, Comp comp = {}, Proj proj = {});                        // since C++20
36481ad6265SDimitry Andric
36581ad6265SDimitry Andric  template<random_access_range R, class Comp = ranges::less, class Proj = identity>
36681ad6265SDimitry Andric    requires sortable<iterator_t<R>, Comp, Proj>
36781ad6265SDimitry Andric    constexpr borrowed_iterator_t<R>
36881ad6265SDimitry Andric      ranges::sort(R&& r, Comp comp = {}, Proj proj = {});                                  // since C++20
36981ad6265SDimitry Andric
37081ad6265SDimitry Andric  template<random_access_iterator I, sentinel_for<I> S, class Comp = ranges::less,
37181ad6265SDimitry Andric          class Proj = identity>
37281ad6265SDimitry Andric    requires sortable<I, Comp, Proj>
37381ad6265SDimitry Andric    I ranges::stable_sort(I first, S last, Comp comp = {}, Proj proj = {});                 // since C++20
37481ad6265SDimitry Andric
37581ad6265SDimitry Andric  template<random_access_range R, class Comp = ranges::less, class Proj = identity>
37681ad6265SDimitry Andric    requires sortable<iterator_t<R>, Comp, Proj>
37781ad6265SDimitry Andric    borrowed_iterator_t<R>
37881ad6265SDimitry Andric      ranges::stable_sort(R&& r, Comp comp = {}, Proj proj = {});                           // since C++20
37981ad6265SDimitry Andric
380fcaf7f86SDimitry Andric  template<random_access_iterator I, sentinel_for<I> S, class Comp = ranges::less,
381fcaf7f86SDimitry Andric           class Proj = identity>
382fcaf7f86SDimitry Andric    requires sortable<I, Comp, Proj>
383fcaf7f86SDimitry Andric    constexpr I
384fcaf7f86SDimitry Andric      ranges::partial_sort(I first, I middle, S last, Comp comp = {}, Proj proj = {});      // since C++20
385fcaf7f86SDimitry Andric
386fcaf7f86SDimitry Andric  template<random_access_range R, class Comp = ranges::less, class Proj = identity>
387fcaf7f86SDimitry Andric    requires sortable<iterator_t<R>, Comp, Proj>
388fcaf7f86SDimitry Andric    constexpr borrowed_iterator_t<R>
389fcaf7f86SDimitry Andric      ranges::partial_sort(R&& r, iterator_t<R> middle, Comp comp = {}, Proj proj = {});    // since C++20
390fcaf7f86SDimitry Andric
39181ad6265SDimitry Andric  template<class T, output_iterator<const T&> O, sentinel_for<O> S>
39281ad6265SDimitry Andric    constexpr O ranges::fill(O first, S last, const T& value);                              // since C++20
39381ad6265SDimitry Andric
39481ad6265SDimitry Andric  template<class T, output_range<const T&> R>
39581ad6265SDimitry Andric    constexpr borrowed_iterator_t<R> ranges::fill(R&& r, const T& value);                   // since C++20
39681ad6265SDimitry Andric
39781ad6265SDimitry Andric  template<class T, output_iterator<const T&> O>
39881ad6265SDimitry Andric    constexpr O ranges::fill_n(O first, iter_difference_t<O> n, const T& value);            // since C++20
39981ad6265SDimitry Andric
400*972a253aSDimitry Andric  template<input_or_output_iterator O, sentinel_for<O> S, copy_constructible F>
401*972a253aSDimitry Andric    requires invocable<F&> && indirectly_writable<O, invoke_result_t<F&>>
402*972a253aSDimitry Andric    constexpr O generate(O first, S last, F gen);                                           // Since C++20
403*972a253aSDimitry Andric
404*972a253aSDimitry Andric  template<class R, copy_constructible F>
405*972a253aSDimitry Andric    requires invocable<F&> && output_range<R, invoke_result_t<F&>>
406*972a253aSDimitry Andric    constexpr borrowed_iterator_t<R> generate(R&& r, F gen);                                // Since C++20
407*972a253aSDimitry Andric
408*972a253aSDimitry Andric  template<input_or_output_iterator O, copy_constructible F>
409*972a253aSDimitry Andric    requires invocable<F&> && indirectly_writable<O, invoke_result_t<F&>>
410*972a253aSDimitry Andric    constexpr O generate_n(O first, iter_difference_t<O> n, F gen);                         // Since C++20
411*972a253aSDimitry Andric
41281ad6265SDimitry Andric template<input_iterator I1, sentinel_for<I1> S1, input_iterator I2, sentinel_for<I2> S2,
41381ad6265SDimitry Andric          class Pred = ranges::equal_to, class Proj1 = identity, class Proj2 = identity>
41481ad6265SDimitry Andric   requires indirectly_comparable<I1, I2, Pred, Proj1, Proj2>
41581ad6265SDimitry Andric   constexpr bool ranges::equal(I1 first1, S1 last1, I2 first2, S2 last2,
41681ad6265SDimitry Andric                                Pred pred = {},
41781ad6265SDimitry Andric                                Proj1 proj1 = {}, Proj2 proj2 = {});                        // since C++20
41881ad6265SDimitry Andric
41981ad6265SDimitry Andric template<input_range R1, input_range R2, class Pred = ranges::equal_to,
42081ad6265SDimitry Andric          class Proj1 = identity, class Proj2 = identity>
42181ad6265SDimitry Andric   requires indirectly_comparable<iterator_t<R1>, iterator_t<R2>, Pred, Proj1, Proj2>
42281ad6265SDimitry Andric   constexpr bool ranges::equal(R1&& r1, R2&& r2, Pred pred = {},
42381ad6265SDimitry Andric                                Proj1 proj1 = {}, Proj2 proj2 = {});                        // since C++20
42481ad6265SDimitry Andric
42581ad6265SDimitry Andric  template<input_iterator I, sentinel_for<I> S, class Proj = identity,
42681ad6265SDimitry Andric           indirect_unary_predicate<projected<I, Proj>> Pred>
42781ad6265SDimitry Andric    constexpr bool ranges::all_of(I first, S last, Pred pred, Proj proj = {});      // since C++20
42881ad6265SDimitry Andric
42981ad6265SDimitry Andric  template<input_range R, class Proj = identity,
43081ad6265SDimitry Andric           indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
43181ad6265SDimitry Andric    constexpr bool ranges::all_of(R&& r, Pred pred, Proj proj = {});                // since C++20
43281ad6265SDimitry Andric
43381ad6265SDimitry Andric  template<input_iterator I, sentinel_for<I> S, class Proj = identity,
43481ad6265SDimitry Andric           indirect_unary_predicate<projected<I, Proj>> Pred>
43581ad6265SDimitry Andric    constexpr bool ranges::any_of(I first, S last, Pred pred, Proj proj = {});      // since C++20
43681ad6265SDimitry Andric
43781ad6265SDimitry Andric  template<input_range R, class Proj = identity,
43881ad6265SDimitry Andric           indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
43981ad6265SDimitry Andric    constexpr bool ranges::any_of(R&& r, Pred pred, Proj proj = {});                // since C++20
44081ad6265SDimitry Andric
44181ad6265SDimitry Andric  template<input_iterator I, sentinel_for<I> S, class Proj = identity,
44281ad6265SDimitry Andric           indirect_unary_predicate<projected<I, Proj>> Pred>
44381ad6265SDimitry Andric    constexpr bool ranges::none_of(I first, S last, Pred pred, Proj proj = {});     // since C++20
44481ad6265SDimitry Andric
44581ad6265SDimitry Andric  template<input_range R, class Proj = identity,
44681ad6265SDimitry Andric           indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
44781ad6265SDimitry Andric    constexpr bool ranges::none_of(R&& r, Pred pred, Proj proj = {});               // since C++20
44881ad6265SDimitry Andric
44981ad6265SDimitry Andric  template<forward_iterator I, sentinel_for<I> S, class Proj = identity,
45081ad6265SDimitry Andric           indirect_strict_weak_order<projected<I, Proj>> Comp = ranges::less>
45181ad6265SDimitry Andric    constexpr bool ranges::is_sorted(I first, S last, Comp comp = {}, Proj proj = {});      // since C++20
45281ad6265SDimitry Andric
45381ad6265SDimitry Andric  template<forward_range R, class Proj = identity,
45481ad6265SDimitry Andric           indirect_strict_weak_order<projected<iterator_t<R>, Proj>> Comp = ranges::less>
45581ad6265SDimitry Andric    constexpr bool ranges::is_sorted(R&& r, Comp comp = {}, Proj proj = {});                // since C++20
45681ad6265SDimitry Andric
45781ad6265SDimitry Andric  template<forward_iterator I, sentinel_for<I> S, class Proj = identity,
45881ad6265SDimitry Andric           indirect_strict_weak_order<projected<I, Proj>> Comp = ranges::less>
45981ad6265SDimitry Andric    constexpr I ranges::is_sorted_until(I first, S last, Comp comp = {}, Proj proj = {});   // since C++20
46081ad6265SDimitry Andric
46181ad6265SDimitry Andric  template<forward_range R, class Proj = identity,
46281ad6265SDimitry Andric           indirect_strict_weak_order<projected<iterator_t<R>, Proj>> Comp = ranges::less>
46381ad6265SDimitry Andric    constexpr borrowed_iterator_t<R>
46481ad6265SDimitry Andric      ranges::is_sorted_until(R&& r, Comp comp = {}, Proj proj = {});                       // since C++20
46581ad6265SDimitry Andric
466753f127fSDimitry Andric  template<random_access_iterator I, sentinel_for<I> S, class Comp = ranges::less,
467753f127fSDimitry Andric          class Proj = identity>
468753f127fSDimitry Andric    requires sortable<I, Comp, Proj>
469753f127fSDimitry Andric    constexpr I
470753f127fSDimitry Andric      ranges::nth_element(I first, I nth, S last, Comp comp = {}, Proj proj = {});            // since C++20
471753f127fSDimitry Andric
472753f127fSDimitry Andric  template<random_access_range R, class Comp = ranges::less, class Proj = identity>
473753f127fSDimitry Andric    requires sortable<iterator_t<R>, Comp, Proj>
474753f127fSDimitry Andric    constexpr borrowed_iterator_t<R>
475753f127fSDimitry Andric      ranges::nth_element(R&& r, iterator_t<R> nth, Comp comp = {}, Proj proj = {});          // since C++20
476753f127fSDimitry Andric
47781ad6265SDimitry Andric  template<forward_iterator I, sentinel_for<I> S, class T, class Proj = identity,
47881ad6265SDimitry Andric           indirect_strict_weak_order<const T*, projected<I, Proj>> Comp = ranges::less>
47981ad6265SDimitry Andric    constexpr I upper_bound(I first, S last, const T& value, Comp comp = {}, Proj proj = {}); // since C++20
48081ad6265SDimitry Andric
48181ad6265SDimitry Andric  template<forward_range R, class T, class Proj = identity,
48281ad6265SDimitry Andric           indirect_strict_weak_order<const T*, projected<iterator_t<R>, Proj>> Comp =
48381ad6265SDimitry Andric             ranges::less>
48481ad6265SDimitry Andric    constexpr borrowed_iterator_t<R>
48581ad6265SDimitry Andric      upper_bound(R&& r, const T& value, Comp comp = {}, Proj proj = {});                     // since C++20
48681ad6265SDimitry Andric
48781ad6265SDimitry Andric  template<forward_iterator I, sentinel_for<I> S, class T, class Proj = identity,
48881ad6265SDimitry Andric           indirect_strict_weak_order<const T*, projected<I, Proj>> Comp = ranges::less>
48981ad6265SDimitry Andric    constexpr I lower_bound(I first, S last, const T& value, Comp comp = {},
49081ad6265SDimitry Andric                                    Proj proj = {});                                          // since C++20
49181ad6265SDimitry Andric  template<forward_range R, class T, class Proj = identity,
49281ad6265SDimitry Andric           indirect_strict_weak_order<const T*, projected<iterator_t<R>, Proj>> Comp =
49381ad6265SDimitry Andric             ranges::less>
49481ad6265SDimitry Andric    constexpr borrowed_iterator_t<R>
49581ad6265SDimitry Andric      lower_bound(R&& r, const T& value, Comp comp = {}, Proj proj = {});                     // since C++20
49681ad6265SDimitry Andric
49781ad6265SDimitry Andric  template<forward_iterator I, sentinel_for<I> S, class T, class Proj = identity,
49881ad6265SDimitry Andric           indirect_strict_weak_order<const T*, projected<I, Proj>> Comp = ranges::less>
49981ad6265SDimitry Andric    constexpr bool binary_search(I first, S last, const T& value, Comp comp = {},
50081ad6265SDimitry Andric                                         Proj proj = {});                                     // since C++20
50181ad6265SDimitry Andric
50281ad6265SDimitry Andric  template<forward_range R, class T, class Proj = identity,
50381ad6265SDimitry Andric           indirect_strict_weak_order<const T*, projected<iterator_t<R>, Proj>> Comp =
50481ad6265SDimitry Andric             ranges::less>
50581ad6265SDimitry Andric    constexpr bool binary_search(R&& r, const T& value, Comp comp = {},
50681ad6265SDimitry Andric                                         Proj proj = {});                                     // since C++20
507fcaf7f86SDimitry Andric
508fcaf7f86SDimitry Andric  template<permutable I, sentinel_for<I> S, class Proj = identity,
509fcaf7f86SDimitry Andric           indirect_unary_predicate<projected<I, Proj>> Pred>
510fcaf7f86SDimitry Andric    constexpr subrange<I>
511fcaf7f86SDimitry Andric      partition(I first, S last, Pred pred, Proj proj = {});                                  // Since C++20
512fcaf7f86SDimitry Andric
513fcaf7f86SDimitry Andric  template<forward_range R, class Proj = identity,
514fcaf7f86SDimitry Andric           indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
515fcaf7f86SDimitry Andric    requires permutable<iterator_t<R>>
516fcaf7f86SDimitry Andric    constexpr borrowed_subrange_t<R>
517fcaf7f86SDimitry Andric      partition(R&& r, Pred pred, Proj proj = {});                                            // Since C++20
518fcaf7f86SDimitry Andric
519fcaf7f86SDimitry Andric  template<bidirectional_iterator I, sentinel_for<I> S, class Proj = identity,
520fcaf7f86SDimitry Andric           indirect_unary_predicate<projected<I, Proj>> Pred>
521fcaf7f86SDimitry Andric    requires permutable<I>
522fcaf7f86SDimitry Andric    subrange<I> stable_partition(I first, S last, Pred pred, Proj proj = {});                 // Since C++20
523fcaf7f86SDimitry Andric
524fcaf7f86SDimitry Andric  template<bidirectional_range R, class Proj = identity,
525fcaf7f86SDimitry Andric           indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
526fcaf7f86SDimitry Andric    requires permutable<iterator_t<R>>
527fcaf7f86SDimitry Andric    borrowed_subrange_t<R> stable_partition(R&& r, Pred pred, Proj proj = {});                // Since C++20
528fcaf7f86SDimitry Andric
52981ad6265SDimitry Andric  template<input_iterator I1, sentinel_for<I1> S1, forward_iterator I2, sentinel_for<I2> S2,
53081ad6265SDimitry Andric           class Pred = ranges::equal_to, class Proj1 = identity, class Proj2 = identity>
53181ad6265SDimitry Andric    requires indirectly_comparable<I1, I2, Pred, Proj1, Proj2>
53281ad6265SDimitry Andric    constexpr I1 ranges::find_first_of(I1 first1, S1 last1, I2 first2, S2 last2,
53381ad6265SDimitry Andric                                       Pred pred = {},
53481ad6265SDimitry Andric                                       Proj1 proj1 = {}, Proj2 proj2 = {});                 // since C++20
53581ad6265SDimitry Andric
53681ad6265SDimitry Andric  template<input_range R1, forward_range R2,
53781ad6265SDimitry Andric           class Pred = ranges::equal_to, class Proj1 = identity, class Proj2 = identity>
53881ad6265SDimitry Andric    requires indirectly_comparable<iterator_t<R1>, iterator_t<R2>, Pred, Proj1, Proj2>
53981ad6265SDimitry Andric    constexpr borrowed_iterator_t<R1>
54081ad6265SDimitry Andric      ranges::find_first_of(R1&& r1, R2&& r2,
54181ad6265SDimitry Andric                            Pred pred = {},
54281ad6265SDimitry Andric                            Proj1 proj1 = {}, Proj2 proj2 = {});                            // since C++20
54381ad6265SDimitry Andric
54481ad6265SDimitry Andric  template<forward_iterator I, sentinel_for<I> S, class Proj = identity,
54581ad6265SDimitry Andric           indirect_binary_predicate<projected<I, Proj>,
54681ad6265SDimitry Andric                                     projected<I, Proj>> Pred = ranges::equal_to>
54781ad6265SDimitry Andric    constexpr I ranges::adjacent_find(I first, S last, Pred pred = {}, Proj proj = {});     // since C+20
54881ad6265SDimitry Andric
54981ad6265SDimitry Andric  template<forward_range R, class Proj = identity,
55081ad6265SDimitry Andric           indirect_binary_predicate<projected<iterator_t<R>, Proj>,
55181ad6265SDimitry Andric                                     projected<iterator_t<R>, Proj>> Pred = ranges::equal_to>
55281ad6265SDimitry Andric    constexpr borrowed_iterator_t<R> ranges::adjacent_find(R&& r, Pred pred = {}, Proj proj = {});  // since C++20
55381ad6265SDimitry Andric
55481ad6265SDimitry Andric  template<input_iterator I, sentinel_for<I> S, class T1, class T2, class Proj = identity>
55581ad6265SDimitry Andric    requires indirectly_writable<I, const T2&> &&
55681ad6265SDimitry Andric             indirect_binary_predicate<ranges::equal_to, projected<I, Proj>, const T1*>
55781ad6265SDimitry Andric    constexpr I
55881ad6265SDimitry Andric      ranges::replace(I first, S last, const T1& old_value, const T2& new_value, Proj proj = {});   // since C++20
55981ad6265SDimitry Andric
56081ad6265SDimitry Andric  template<input_range R, class T1, class T2, class Proj = identity>
56181ad6265SDimitry Andric    requires indirectly_writable<iterator_t<R>, const T2&> &&
56281ad6265SDimitry Andric             indirect_binary_predicate<ranges::equal_to, projected<iterator_t<R>, Proj>, const T1*>
56381ad6265SDimitry Andric    constexpr borrowed_iterator_t<R>
56481ad6265SDimitry Andric      ranges::replace(R&& r, const T1& old_value, const T2& new_value, Proj proj = {});             // since C++20
56581ad6265SDimitry Andric
56681ad6265SDimitry Andric  template<input_iterator I, sentinel_for<I> S, class T, class Proj = identity,
56781ad6265SDimitry Andric           indirect_unary_predicate<projected<I, Proj>> Pred>
56881ad6265SDimitry Andric    requires indirectly_writable<I, const T&>
56981ad6265SDimitry Andric    constexpr I ranges::replace_if(I first, S last, Pred pred, const T& new_value, Proj proj = {}); // since C++20
57081ad6265SDimitry Andric
57181ad6265SDimitry Andric  template<input_range R, class T, class Proj = identity,
57281ad6265SDimitry Andric           indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
57381ad6265SDimitry Andric    requires indirectly_writable<iterator_t<R>, const T&>
57481ad6265SDimitry Andric    constexpr borrowed_iterator_t<R>
57581ad6265SDimitry Andric      ranges::replace_if(R&& r, Pred pred, const T& new_value, Proj proj = {});                     // since C++20
57681ad6265SDimitry Andric
57781ad6265SDimitry Andric  template<input_iterator I1, sentinel_for<I1> S1, input_iterator I2, sentinel_for<I2> S2,
57881ad6265SDimitry Andric           class Proj1 = identity, class Proj2 = identity,
57981ad6265SDimitry Andric           indirect_strict_weak_order<projected<I1, Proj1>,
58081ad6265SDimitry Andric                                      projected<I2, Proj2>> Comp = ranges::less>
58181ad6265SDimitry Andric    constexpr bool
58281ad6265SDimitry Andric      ranges::lexicographical_compare(I1 first1, S1 last1, I2 first2, S2 last2,
58381ad6265SDimitry Andric                                      Comp comp = {}, Proj1 proj1 = {}, Proj2 proj2 = {});    // since C++20
58481ad6265SDimitry Andric
58581ad6265SDimitry Andric  template<input_range R1, input_range R2, class Proj1 = identity,
58681ad6265SDimitry Andric           class Proj2 = identity,
58781ad6265SDimitry Andric           indirect_strict_weak_order<projected<iterator_t<R1>, Proj1>,
58881ad6265SDimitry Andric                                      projected<iterator_t<R2>, Proj2>> Comp = ranges::less>
58981ad6265SDimitry Andric    constexpr bool
59081ad6265SDimitry Andric      ranges::lexicographical_compare(R1&& r1, R2&& r2, Comp comp = {},
59181ad6265SDimitry Andric                                      Proj1 proj1 = {}, Proj2 proj2 = {});                    // since C++20
59281ad6265SDimitry Andric
59381ad6265SDimitry Andric  template<bidirectional_iterator I1, sentinel_for<I1> S1, bidirectional_iterator I2>
59481ad6265SDimitry Andric    requires indirectly_movable<I1, I2>
59581ad6265SDimitry Andric    constexpr ranges::move_backward_result<I1, I2>
59681ad6265SDimitry Andric      ranges::move_backward(I1 first, S1 last, I2 result);                                          // since C++20
59781ad6265SDimitry Andric
59881ad6265SDimitry Andric  template<bidirectional_range R, bidirectional_iterator I>
59981ad6265SDimitry Andric    requires indirectly_movable<iterator_t<R>, I>
60081ad6265SDimitry Andric    constexpr ranges::move_backward_result<borrowed_iterator_t<R>, I>
60181ad6265SDimitry Andric      ranges::move_backward(R&& r, I result);                                                       // since C++20
60281ad6265SDimitry Andric
60381ad6265SDimitry Andric  template<input_iterator I, sentinel_for<I> S, weakly_incrementable O>
60481ad6265SDimitry Andric    requires indirectly_movable<I, O>
60581ad6265SDimitry Andric    constexpr ranges::move_result<I, O>
60681ad6265SDimitry Andric      ranges::move(I first, S last, O result);                                                      // since C++20
60781ad6265SDimitry Andric
60881ad6265SDimitry Andric  template<input_range R, weakly_incrementable O>
60981ad6265SDimitry Andric    requires indirectly_movable<iterator_t<R>, O>
61081ad6265SDimitry Andric    constexpr ranges::move_result<borrowed_iterator_t<R>, O>
61181ad6265SDimitry Andric      ranges::move(R&& r, O result);                                                                // since C++20
61281ad6265SDimitry Andric
613fcaf7f86SDimitry Andric  template<class I, class O1, class O2>
614fcaf7f86SDimitry Andric      using partition_copy_result = in_out_out_result<I, O1, O2>;                                   // since C++20
615fcaf7f86SDimitry Andric
616fcaf7f86SDimitry Andric  template<input_iterator I, sentinel_for<I> S,
617fcaf7f86SDimitry Andric          weakly_incrementable O1, weakly_incrementable O2,
618fcaf7f86SDimitry Andric          class Proj = identity, indirect_unary_predicate<projected<I, Proj>> Pred>
619fcaf7f86SDimitry Andric    requires indirectly_copyable<I, O1> && indirectly_copyable<I, O2>
620fcaf7f86SDimitry Andric    constexpr partition_copy_result<I, O1, O2>
621fcaf7f86SDimitry Andric      partition_copy(I first, S last, O1 out_true, O2 out_false, Pred pred,
622fcaf7f86SDimitry Andric                    Proj proj = {});                                                                // Since C++20
623fcaf7f86SDimitry Andric
624fcaf7f86SDimitry Andric  template<input_range R, weakly_incrementable O1, weakly_incrementable O2,
625fcaf7f86SDimitry Andric          class Proj = identity,
626fcaf7f86SDimitry Andric          indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
627fcaf7f86SDimitry Andric    requires indirectly_copyable<iterator_t<R>, O1> &&
628fcaf7f86SDimitry Andric            indirectly_copyable<iterator_t<R>, O2>
629fcaf7f86SDimitry Andric    constexpr partition_copy_result<borrowed_iterator_t<R>, O1, O2>
630fcaf7f86SDimitry Andric      partition_copy(R&& r, O1 out_true, O2 out_false, Pred pred, Proj proj = {});                  // Since C++20
631fcaf7f86SDimitry Andric
632fcaf7f86SDimitry Andric  template<forward_iterator I, sentinel_for<I> S, class Proj = identity,
633fcaf7f86SDimitry Andric           indirect_unary_predicate<projected<I, Proj>> Pred>
634fcaf7f86SDimitry Andric    constexpr I partition_point(I first, S last, Pred pred, Proj proj = {});                        // Since C++20
635fcaf7f86SDimitry Andric
636fcaf7f86SDimitry Andric  template<forward_range R, class Proj = identity,
637fcaf7f86SDimitry Andric           indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
638fcaf7f86SDimitry Andric    constexpr borrowed_iterator_t<R>
639fcaf7f86SDimitry Andric      partition_point(R&& r, Pred pred, Proj proj = {});                                            // Since C++20
640fcaf7f86SDimitry Andric
641753f127fSDimitry Andric  template<class I1, class I2, class O>
642753f127fSDimitry Andric    using merge_result = in_in_out_result<I1, I2, O>;                                               // since C++20
643753f127fSDimitry Andric
644753f127fSDimitry Andric  template<input_iterator I1, sentinel_for<I1> S1, input_iterator I2, sentinel_for<I2> S2,
645753f127fSDimitry Andric           weakly_incrementable O, class Comp = ranges::less, class Proj1 = identity,
646753f127fSDimitry Andric           class Proj2 = identity>
647753f127fSDimitry Andric    requires mergeable<I1, I2, O, Comp, Proj1, Proj2>
648753f127fSDimitry Andric    constexpr merge_result<I1, I2, O>
649753f127fSDimitry Andric      merge(I1 first1, S1 last1, I2 first2, S2 last2, O result,
650753f127fSDimitry Andric            Comp comp = {}, Proj1 proj1 = {}, Proj2 proj2 = {});                                    // since C++20
651753f127fSDimitry Andric
652753f127fSDimitry Andric  template<input_range R1, input_range R2, weakly_incrementable O, class Comp = ranges::less,
653753f127fSDimitry Andric           class Proj1 = identity, class Proj2 = identity>
654753f127fSDimitry Andric    requires mergeable<iterator_t<R1>, iterator_t<R2>, O, Comp, Proj1, Proj2>
655753f127fSDimitry Andric    constexpr merge_result<borrowed_iterator_t<R1>, borrowed_iterator_t<R2>, O>
656753f127fSDimitry Andric      merge(R1&& r1, R2&& r2, O result,
657753f127fSDimitry Andric            Comp comp = {}, Proj1 proj1 = {}, Proj2 proj2 = {});                                    // since C++20
658753f127fSDimitry Andric
659753f127fSDimitry Andric  template<permutable I, sentinel_for<I> S, class T, class Proj = identity>
660753f127fSDimitry Andric    requires indirect_binary_predicate<ranges::equal_to, projected<I, Proj>, const T*>
661753f127fSDimitry Andric    constexpr subrange<I> ranges::remove(I first, S last, const T& value, Proj proj = {});          // since C++20
662753f127fSDimitry Andric
663753f127fSDimitry Andric  template<forward_range R, class T, class Proj = identity>
664753f127fSDimitry Andric    requires permutable<iterator_t<R>> &&
665753f127fSDimitry Andric             indirect_binary_predicate<ranges::equal_to, projected<iterator_t<R>, Proj>, const T*>
666753f127fSDimitry Andric    constexpr borrowed_subrange_t<R>
667753f127fSDimitry Andric      ranges::remove(R&& r, const T& value, Proj proj = {});                                        // since C++20
668753f127fSDimitry Andric
669753f127fSDimitry Andric  template<permutable I, sentinel_for<I> S, class Proj = identity,
670753f127fSDimitry Andric           indirect_unary_predicate<projected<I, Proj>> Pred>
671753f127fSDimitry Andric    constexpr subrange<I> ranges::remove_if(I first, S last, Pred pred, Proj proj = {});            // since C++20
672753f127fSDimitry Andric
673753f127fSDimitry Andric  template<forward_range R, class Proj = identity,
674753f127fSDimitry Andric           indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
675753f127fSDimitry Andric    requires permutable<iterator_t<R>>
676753f127fSDimitry Andric    constexpr borrowed_subrange_t<R>
677753f127fSDimitry Andric      ranges::remove_if(R&& r, Pred pred, Proj proj = {});                                          // since C++20
678753f127fSDimitry Andric
679753f127fSDimitry Andric  template<class I, class O>
680753f127fSDimitry Andric    using set_difference_result = in_out_result<I, O>;                                              // since C++20
681753f127fSDimitry Andric
682753f127fSDimitry Andric  template<input_iterator I1, sentinel_for<I1> S1, input_iterator I2, sentinel_for<I2> S2,
683753f127fSDimitry Andric           weakly_incrementable O, class Comp = ranges::less,
684753f127fSDimitry Andric           class Proj1 = identity, class Proj2 = identity>
685753f127fSDimitry Andric    requires mergeable<I1, I2, O, Comp, Proj1, Proj2>
686753f127fSDimitry Andric    constexpr set_difference_result<I1, O>
687753f127fSDimitry Andric      set_difference(I1 first1, S1 last1, I2 first2, S2 last2, O result,
688753f127fSDimitry Andric                     Comp comp = {}, Proj1 proj1 = {}, Proj2 proj2 = {});                           // since C++20
689753f127fSDimitry Andric
690753f127fSDimitry Andric  template<input_range R1, input_range R2, weakly_incrementable O,
691753f127fSDimitry Andric           class Comp = ranges::less, class Proj1 = identity, class Proj2 = identity>
692753f127fSDimitry Andric    requires mergeable<iterator_t<R1>, iterator_t<R2>, O, Comp, Proj1, Proj2>
693753f127fSDimitry Andric    constexpr set_difference_result<borrowed_iterator_t<R1>, O>
694753f127fSDimitry Andric      set_difference(R1&& r1, R2&& r2, O result,
695753f127fSDimitry Andric                     Comp comp = {}, Proj1 proj1 = {}, Proj2 proj2 = {});                           // since C++20
696753f127fSDimitry Andric
697753f127fSDimitry Andric  template<class I1, class I2, class O>
698753f127fSDimitry Andric    using set_intersection_result = in_in_out_result<I1, I2, O>;                                    // since C++20
699753f127fSDimitry Andric
700753f127fSDimitry Andric  template<input_iterator I1, sentinel_for<I1> S1, input_iterator I2, sentinel_for<I2> S2,
701753f127fSDimitry Andric           weakly_incrementable O, class Comp = ranges::less,
702753f127fSDimitry Andric           class Proj1 = identity, class Proj2 = identity>
703753f127fSDimitry Andric    requires mergeable<I1, I2, O, Comp, Proj1, Proj2>
704753f127fSDimitry Andric    constexpr set_intersection_result<I1, I2, O>
705753f127fSDimitry Andric      set_intersection(I1 first1, S1 last1, I2 first2, S2 last2, O result,
706753f127fSDimitry Andric                       Comp comp = {}, Proj1 proj1 = {}, Proj2 proj2 = {});                         // since C++20
707753f127fSDimitry Andric
708753f127fSDimitry Andric  template<input_iterator I1, sentinel_for<I1> S1, input_iterator I2, sentinel_for<I2> S2,
709753f127fSDimitry Andric           weakly_incrementable O, class Comp = ranges::less,
710753f127fSDimitry Andric           class Proj1 = identity, class Proj2 = identity>
711753f127fSDimitry Andric    requires mergeable<I1, I2, O, Comp, Proj1, Proj2>
712753f127fSDimitry Andric    constexpr set_intersection_result<borrowed_iterator_t<R1>, borrowed_iterator_t<R2>, O>
713753f127fSDimitry Andric      set_intersection(R1&& r1, R2&& r2, O result,
714753f127fSDimitry Andric                       Comp comp = {}, Proj1 proj1 = {}, Proj2 proj2 = {});                         // since C++20
715753f127fSDimitry Andric
716753f127fSDimitry Andric  template <class _InIter, class _OutIter>
717753f127fSDimitry Andric  using reverse_copy_result = in_out_result<_InIter, _OutIter>;                                     // since C++20
718753f127fSDimitry Andric
719753f127fSDimitry Andric  template<bidirectional_iterator I, sentinel_for<I> S, weakly_incrementable O>
720753f127fSDimitry Andric    requires indirectly_copyable<I, O>
721753f127fSDimitry Andric    constexpr ranges::reverse_copy_result<I, O>
722753f127fSDimitry Andric      ranges::reverse_copy(I first, S last, O result);                                              // since C++20
723753f127fSDimitry Andric
724753f127fSDimitry Andric  template<bidirectional_range R, weakly_incrementable O>
725753f127fSDimitry Andric    requires indirectly_copyable<iterator_t<R>, O>
726753f127fSDimitry Andric    constexpr ranges::reverse_copy_result<borrowed_iterator_t<R>, O>
727753f127fSDimitry Andric      ranges::reverse_copy(R&& r, O result);                                                        // since C++20
728753f127fSDimitry Andric
729753f127fSDimitry Andric  template <class _InIter, class _OutIter>
730753f127fSDimitry Andric  using rotate_copy_result = in_out_result<_InIter, _OutIter>;                                      // since C++20
731753f127fSDimitry Andric
732753f127fSDimitry Andric  template<forward_iterator I, sentinel_for<I> S, weakly_incrementable O>
733753f127fSDimitry Andric    requires indirectly_copyable<I, O>
734753f127fSDimitry Andric    constexpr ranges::rotate_copy_result<I, O>
735753f127fSDimitry Andric      ranges::rotate_copy(I first, I middle, S last, O result);                                     // since C++20
736753f127fSDimitry Andric
737753f127fSDimitry Andric  template<forward_range R, weakly_incrementable O>
738753f127fSDimitry Andric    requires indirectly_copyable<iterator_t<R>, O>
739753f127fSDimitry Andric    constexpr ranges::rotate_copy_result<borrowed_iterator_t<R>, O>
740753f127fSDimitry Andric      ranges::rotate_copy(R&& r, iterator_t<R> middle, O result);                                   // since C++20
741753f127fSDimitry Andric
742fcaf7f86SDimitry Andric  template<random_access_iterator I, sentinel_for<I> S, class Gen>
743fcaf7f86SDimitry Andric    requires permutable<I> &&
744fcaf7f86SDimitry Andric            uniform_random_bit_generator<remove_reference_t<Gen>>
745fcaf7f86SDimitry Andric    I shuffle(I first, S last, Gen&& g);                                                           // Since C++20
746fcaf7f86SDimitry Andric
747fcaf7f86SDimitry Andric  template<random_access_range R, class Gen>
748fcaf7f86SDimitry Andric    requires permutable<iterator_t<R>> &&
749fcaf7f86SDimitry Andric            uniform_random_bit_generator<remove_reference_t<Gen>>
750fcaf7f86SDimitry Andric    borrowed_iterator_t<R> shuffle(R&& r, Gen&& g);                                                // Since C++20
751fcaf7f86SDimitry Andric
752753f127fSDimitry Andric  template<forward_iterator I1, sentinel_for<I1> S1, forward_iterator I2,
753753f127fSDimitry Andric           sentinel_for<I2> S2, class Pred = ranges::equal_to,
754753f127fSDimitry Andric           class Proj1 = identity, class Proj2 = identity>
755753f127fSDimitry Andric    requires indirectly_comparable<I1, I2, Pred, Proj1, Proj2>
756753f127fSDimitry Andric    constexpr subrange<I1>
757753f127fSDimitry Andric      ranges::search(I1 first1, S1 last1, I2 first2, S2 last2, Pred pred = {},
758753f127fSDimitry Andric                     Proj1 proj1 = {}, Proj2 proj2 = {});                                           // since C++20
759753f127fSDimitry Andric
760753f127fSDimitry Andric  template<forward_range R1, forward_range R2, class Pred = ranges::equal_to,
761753f127fSDimitry Andric           class Proj1 = identity, class Proj2 = identity>
762753f127fSDimitry Andric    requires indirectly_comparable<iterator_t<R1>, iterator_t<R2>, Pred, Proj1, Proj2>
763753f127fSDimitry Andric    constexpr borrowed_subrange_t<R1>
764753f127fSDimitry Andric      ranges::search(R1&& r1, R2&& r2, Pred pred = {},
765753f127fSDimitry Andric                     Proj1 proj1 = {}, Proj2 proj2 = {});                                           // since C++20
766753f127fSDimitry Andric
767753f127fSDimitry Andric  template<forward_iterator I, sentinel_for<I> S, class T,
768753f127fSDimitry Andric           class Pred = ranges::equal_to, class Proj = identity>
769753f127fSDimitry Andric    requires indirectly_comparable<I, const T*, Pred, Proj>
770753f127fSDimitry Andric    constexpr subrange<I>
771753f127fSDimitry Andric      ranges::search_n(I first, S last, iter_difference_t<I> count,
772753f127fSDimitry Andric                       const T& value, Pred pred = {}, Proj proj = {});                             // since C++20
773753f127fSDimitry Andric
774753f127fSDimitry Andric  template<forward_range R, class T, class Pred = ranges::equal_to,
775753f127fSDimitry Andric           class Proj = identity>
776753f127fSDimitry Andric    requires indirectly_comparable<iterator_t<R>, const T*, Pred, Proj>
777753f127fSDimitry Andric    constexpr borrowed_subrange_t<R>
778753f127fSDimitry Andric      ranges::search_n(R&& r, range_difference_t<R> count,
779753f127fSDimitry Andric                       const T& value, Pred pred = {}, Proj proj = {});                             // since C++20
780753f127fSDimitry Andric
781753f127fSDimitry Andric  template<forward_iterator I1, sentinel_for<I1> S1, forward_iterator I2, sentinel_for<I2> S2,
782753f127fSDimitry Andric           class Pred = ranges::equal_to, class Proj1 = identity, class Proj2 = identity>
783753f127fSDimitry Andric    requires indirectly_comparable<I1, I2, Pred, Proj1, Proj2>
784753f127fSDimitry Andric    constexpr subrange<I1>
785753f127fSDimitry Andric      ranges::find_end(I1 first1, S1 last1, I2 first2, S2 last2, Pred pred = {},
786753f127fSDimitry Andric                       Proj1 proj1 = {}, Proj2 proj2 = {});                                         // since C++20
787753f127fSDimitry Andric
788753f127fSDimitry Andric  template<forward_range R1, forward_range R2,
789753f127fSDimitry Andric           class Pred = ranges::equal_to, class Proj1 = identity, class Proj2 = identity>
790753f127fSDimitry Andric    requires indirectly_comparable<iterator_t<R1>, iterator_t<R2>, Pred, Proj1, Proj2>
791753f127fSDimitry Andric    constexpr borrowed_subrange_t<R1>
792753f127fSDimitry Andric      ranges::find_end(R1&& r1, R2&& r2, Pred pred = {},
793753f127fSDimitry Andric                       Proj1 proj1 = {}, Proj2 proj2 = {});                                         // since C++20
794753f127fSDimitry Andric
795753f127fSDimitry Andric  template<class I1, class I2, class O>
796753f127fSDimitry Andric    using set_symmetric_difference_result = in_in_out_result<I1, I2, O>;                            // since C++20
797753f127fSDimitry Andric
798753f127fSDimitry Andric  template<input_iterator I1, sentinel_for<I1> S1, input_iterator I2, sentinel_for<I2> S2,
799753f127fSDimitry Andric           weakly_incrementable O, class Comp = ranges::less,
800753f127fSDimitry Andric           class Proj1 = identity, class Proj2 = identity>
801753f127fSDimitry Andric    requires mergeable<I1, I2, O, Comp, Proj1, Proj2>
802753f127fSDimitry Andric    constexpr set_symmetric_difference_result<I1, I2, O>
803753f127fSDimitry Andric      set_symmetric_difference(I1 first1, S1 last1, I2 first2, S2 last2, O result,
804753f127fSDimitry Andric                               Comp comp = {}, Proj1 proj1 = {},
805753f127fSDimitry Andric                               Proj2 proj2 = {});                                                   // since C++20
806753f127fSDimitry Andric
807753f127fSDimitry Andric  template<input_range R1, input_range R2, weakly_incrementable O,
808753f127fSDimitry Andric           class Comp = ranges::less, class Proj1 = identity, class Proj2 = identity>
809753f127fSDimitry Andric    requires mergeable<iterator_t<R1>, iterator_t<R2>, O, Comp, Proj1, Proj2>
810753f127fSDimitry Andric    constexpr set_symmetric_difference_result<borrowed_iterator_t<R1>,
811753f127fSDimitry Andric                                                      borrowed_iterator_t<R2>, O>
812753f127fSDimitry Andric      set_symmetric_difference(R1&& r1, R2&& r2, O result, Comp comp = {},
813753f127fSDimitry Andric                               Proj1 proj1 = {}, Proj2 proj2 = {});                                 // since C++20
81481ad6265SDimitry Andric
815fcaf7f86SDimitry Andric  template<forward_iterator I, sentinel_for<I> S, class T, class Proj = identity,
816fcaf7f86SDimitry Andric           indirect_strict_weak_order<const T*, projected<I, Proj>> Comp = ranges::less>
817fcaf7f86SDimitry Andric    constexpr subrange<I>
818fcaf7f86SDimitry Andric      equal_range(I first, S last, const T& value, Comp comp = {}, Proj proj = {});                 // since C++20
819fcaf7f86SDimitry Andric
820fcaf7f86SDimitry Andric  template<forward_range R, class T, class Proj = identity,
821fcaf7f86SDimitry Andric           indirect_strict_weak_order<const T*, projected<iterator_t<R>, Proj>> Comp =
822fcaf7f86SDimitry Andric             ranges::less>
823fcaf7f86SDimitry Andric    constexpr borrowed_subrange_t<R>
824fcaf7f86SDimitry Andric      equal_range(R&& r, const T& value, Comp comp = {}, Proj proj = {});                           // since C++20
825fcaf7f86SDimitry Andric
826fcaf7f86SDimitry Andric  template<class I1, class I2, class O>
827fcaf7f86SDimitry Andric    using set_union_result = in_in_out_result<I1, I2, O>;                                           // since C++20
828fcaf7f86SDimitry Andric
829fcaf7f86SDimitry Andric  template<input_iterator I1, sentinel_for<I1> S1, input_iterator I2, sentinel_for<I2> S2,
830fcaf7f86SDimitry Andric           weakly_incrementable O, class Comp = ranges::less,
831fcaf7f86SDimitry Andric           class Proj1 = identity, class Proj2 = identity>
832fcaf7f86SDimitry Andric    requires mergeable<I1, I2, O, Comp, Proj1, Proj2>
833fcaf7f86SDimitry Andric    constexpr set_union_result<I1, I2, O>
834fcaf7f86SDimitry Andric      set_union(I1 first1, S1 last1, I2 first2, S2 last2, O result, Comp comp = {},
835fcaf7f86SDimitry Andric                Proj1 proj1 = {}, Proj2 proj2 = {});                                                // since C++20
836fcaf7f86SDimitry Andric
837fcaf7f86SDimitry Andric  template<input_range R1, input_range R2, weakly_incrementable O,
838fcaf7f86SDimitry Andric           class Comp = ranges::less, class Proj1 = identity, class Proj2 = identity>
839fcaf7f86SDimitry Andric    requires mergeable<iterator_t<R1>, iterator_t<R2>, O, Comp, Proj1, Proj2>
840fcaf7f86SDimitry Andric    constexpr set_union_result<borrowed_iterator_t<R1>, borrowed_iterator_t<R2>, O>
841fcaf7f86SDimitry Andric      set_union(R1&& r1, R2&& r2, O result, Comp comp = {},
842fcaf7f86SDimitry Andric                Proj1 proj1 = {}, Proj2 proj2 = {});                                                // since C++20
843fcaf7f86SDimitry Andric
844fcaf7f86SDimitry Andric  template<input_iterator I1, sentinel_for<I1> S1, input_iterator I2, sentinel_for<I2> S2,
845fcaf7f86SDimitry Andric           class Proj1 = identity, class Proj2 = identity,
846fcaf7f86SDimitry Andric           indirect_strict_weak_order<projected<I1, Proj1>, projected<I2, Proj2>> Comp =
847fcaf7f86SDimitry Andric             ranges::less>
848fcaf7f86SDimitry Andric    constexpr bool includes(I1 first1, S1 last1, I2 first2, S2 last2, Comp comp = {},
849fcaf7f86SDimitry Andric                            Proj1 proj1 = {}, Proj2 proj2 = {});                                   // Since C++20
850fcaf7f86SDimitry Andric
851fcaf7f86SDimitry Andric  template<input_range R1, input_range R2, class Proj1 = identity,
852fcaf7f86SDimitry Andric           class Proj2 = identity,
853fcaf7f86SDimitry Andric           indirect_strict_weak_order<projected<iterator_t<R1>, Proj1>,
854fcaf7f86SDimitry Andric                                      projected<iterator_t<R2>, Proj2>> Comp = ranges::less>
855fcaf7f86SDimitry Andric    constexpr bool includes(R1&& r1, R2&& r2, Comp comp = {},
856fcaf7f86SDimitry Andric                            Proj1 proj1 = {}, Proj2 proj2 = {});                                   // Since C++20
85704eeddc0SDimitry Andric}
85804eeddc0SDimitry Andric
8590b57cec5SDimitry Andric    constexpr bool     // constexpr in C++20
8600b57cec5SDimitry Andric    all_of(InputIterator first, InputIterator last, Predicate pred);
8610b57cec5SDimitry Andric
8620b57cec5SDimitry Andrictemplate <class InputIterator, class Predicate>
8630b57cec5SDimitry Andric    constexpr bool     // constexpr in C++20
8640b57cec5SDimitry Andric    any_of(InputIterator first, InputIterator last, Predicate pred);
8650b57cec5SDimitry Andric
8660b57cec5SDimitry Andrictemplate <class InputIterator, class Predicate>
8670b57cec5SDimitry Andric    constexpr bool     // constexpr in C++20
8680b57cec5SDimitry Andric    none_of(InputIterator first, InputIterator last, Predicate pred);
8690b57cec5SDimitry Andric
8700b57cec5SDimitry Andrictemplate <class InputIterator, class Function>
8710b57cec5SDimitry Andric    constexpr Function          // constexpr in C++20
8720b57cec5SDimitry Andric    for_each(InputIterator first, InputIterator last, Function f);
8730b57cec5SDimitry Andric
8740b57cec5SDimitry Andrictemplate<class InputIterator, class Size, class Function>
8750b57cec5SDimitry Andric    constexpr InputIterator     // constexpr in C++20
8760b57cec5SDimitry Andric    for_each_n(InputIterator first, Size n, Function f); // C++17
8770b57cec5SDimitry Andric
8780b57cec5SDimitry Andrictemplate <class InputIterator, class T>
8790b57cec5SDimitry Andric    constexpr InputIterator     // constexpr in C++20
8800b57cec5SDimitry Andric    find(InputIterator first, InputIterator last, const T& value);
8810b57cec5SDimitry Andric
8820b57cec5SDimitry Andrictemplate <class InputIterator, class Predicate>
8830b57cec5SDimitry Andric    constexpr InputIterator     // constexpr in C++20
8840b57cec5SDimitry Andric    find_if(InputIterator first, InputIterator last, Predicate pred);
8850b57cec5SDimitry Andric
8860b57cec5SDimitry Andrictemplate<class InputIterator, class Predicate>
887e8d8bef9SDimitry Andric    constexpr InputIterator     // constexpr in C++20
8880b57cec5SDimitry Andric    find_if_not(InputIterator first, InputIterator last, Predicate pred);
8890b57cec5SDimitry Andric
8900b57cec5SDimitry Andrictemplate <class ForwardIterator1, class ForwardIterator2>
891e8d8bef9SDimitry Andric    constexpr ForwardIterator1  // constexpr in C++20
8920b57cec5SDimitry Andric    find_end(ForwardIterator1 first1, ForwardIterator1 last1,
8930b57cec5SDimitry Andric             ForwardIterator2 first2, ForwardIterator2 last2);
8940b57cec5SDimitry Andric
8950b57cec5SDimitry Andrictemplate <class ForwardIterator1, class ForwardIterator2, class BinaryPredicate>
896e8d8bef9SDimitry Andric    constexpr ForwardIterator1  // constexpr in C++20
8970b57cec5SDimitry Andric    find_end(ForwardIterator1 first1, ForwardIterator1 last1,
8980b57cec5SDimitry Andric             ForwardIterator2 first2, ForwardIterator2 last2, BinaryPredicate pred);
8990b57cec5SDimitry Andric
9000b57cec5SDimitry Andrictemplate <class ForwardIterator1, class ForwardIterator2>
9010b57cec5SDimitry Andric    constexpr ForwardIterator1  // constexpr in C++20
9020b57cec5SDimitry Andric    find_first_of(ForwardIterator1 first1, ForwardIterator1 last1,
9030b57cec5SDimitry Andric                  ForwardIterator2 first2, ForwardIterator2 last2);
9040b57cec5SDimitry Andric
9050b57cec5SDimitry Andrictemplate <class ForwardIterator1, class ForwardIterator2, class BinaryPredicate>
9060b57cec5SDimitry Andric    constexpr ForwardIterator1  // constexpr in C++20
9070b57cec5SDimitry Andric    find_first_of(ForwardIterator1 first1, ForwardIterator1 last1,
9080b57cec5SDimitry Andric                  ForwardIterator2 first2, ForwardIterator2 last2, BinaryPredicate pred);
9090b57cec5SDimitry Andric
9100b57cec5SDimitry Andrictemplate <class ForwardIterator>
9110b57cec5SDimitry Andric    constexpr ForwardIterator   // constexpr in C++20
9120b57cec5SDimitry Andric    adjacent_find(ForwardIterator first, ForwardIterator last);
9130b57cec5SDimitry Andric
9140b57cec5SDimitry Andrictemplate <class ForwardIterator, class BinaryPredicate>
9150b57cec5SDimitry Andric    constexpr ForwardIterator   // constexpr in C++20
9160b57cec5SDimitry Andric    adjacent_find(ForwardIterator first, ForwardIterator last, BinaryPredicate pred);
9170b57cec5SDimitry Andric
9180b57cec5SDimitry Andrictemplate <class InputIterator, class T>
9190b57cec5SDimitry Andric    constexpr typename iterator_traits<InputIterator>::difference_type  // constexpr in C++20
9200b57cec5SDimitry Andric    count(InputIterator first, InputIterator last, const T& value);
9210b57cec5SDimitry Andric
9220b57cec5SDimitry Andrictemplate <class InputIterator, class Predicate>
9230b57cec5SDimitry Andric    constexpr typename iterator_traits<InputIterator>::difference_type // constexpr in C++20
9240b57cec5SDimitry Andric    count_if(InputIterator first, InputIterator last, Predicate pred);
9250b57cec5SDimitry Andric
9260b57cec5SDimitry Andrictemplate <class InputIterator1, class InputIterator2>
9270b57cec5SDimitry Andric    constexpr pair<InputIterator1, InputIterator2>   // constexpr in C++20
9280b57cec5SDimitry Andric    mismatch(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2);
9290b57cec5SDimitry Andric
9300b57cec5SDimitry Andrictemplate <class InputIterator1, class InputIterator2>
9310b57cec5SDimitry Andric    constexpr pair<InputIterator1, InputIterator2>   // constexpr in C++20
9320b57cec5SDimitry Andric    mismatch(InputIterator1 first1, InputIterator1 last1,
9330b57cec5SDimitry Andric             InputIterator2 first2, InputIterator2 last2); // **C++14**
9340b57cec5SDimitry Andric
9350b57cec5SDimitry Andrictemplate <class InputIterator1, class InputIterator2, class BinaryPredicate>
9360b57cec5SDimitry Andric    constexpr pair<InputIterator1, InputIterator2>   // constexpr in C++20
9370b57cec5SDimitry Andric    mismatch(InputIterator1 first1, InputIterator1 last1,
9380b57cec5SDimitry Andric             InputIterator2 first2, BinaryPredicate pred);
9390b57cec5SDimitry Andric
9400b57cec5SDimitry Andrictemplate <class InputIterator1, class InputIterator2, class BinaryPredicate>
9410b57cec5SDimitry Andric    constexpr pair<InputIterator1, InputIterator2>   // constexpr in C++20
9420b57cec5SDimitry Andric    mismatch(InputIterator1 first1, InputIterator1 last1,
9430b57cec5SDimitry Andric             InputIterator2 first2, InputIterator2 last2,
9440b57cec5SDimitry Andric             BinaryPredicate pred); // **C++14**
9450b57cec5SDimitry Andric
9460b57cec5SDimitry Andrictemplate <class InputIterator1, class InputIterator2>
9470b57cec5SDimitry Andric    constexpr bool      // constexpr in C++20
9480b57cec5SDimitry Andric    equal(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2);
9490b57cec5SDimitry Andric
9500b57cec5SDimitry Andrictemplate <class InputIterator1, class InputIterator2>
9510b57cec5SDimitry Andric    constexpr bool      // constexpr in C++20
9520b57cec5SDimitry Andric    equal(InputIterator1 first1, InputIterator1 last1,
9530b57cec5SDimitry Andric          InputIterator2 first2, InputIterator2 last2); // **C++14**
9540b57cec5SDimitry Andric
9550b57cec5SDimitry Andrictemplate <class InputIterator1, class InputIterator2, class BinaryPredicate>
9560b57cec5SDimitry Andric    constexpr bool      // constexpr in C++20
9570b57cec5SDimitry Andric    equal(InputIterator1 first1, InputIterator1 last1,
9580b57cec5SDimitry Andric          InputIterator2 first2, BinaryPredicate pred);
9590b57cec5SDimitry Andric
9600b57cec5SDimitry Andrictemplate <class InputIterator1, class InputIterator2, class BinaryPredicate>
9610b57cec5SDimitry Andric    constexpr bool      // constexpr in C++20
9620b57cec5SDimitry Andric    equal(InputIterator1 first1, InputIterator1 last1,
9630b57cec5SDimitry Andric          InputIterator2 first2, InputIterator2 last2,
9640b57cec5SDimitry Andric          BinaryPredicate pred); // **C++14**
9650b57cec5SDimitry Andric
9660b57cec5SDimitry Andrictemplate<class ForwardIterator1, class ForwardIterator2>
9670b57cec5SDimitry Andric    constexpr bool      // constexpr in C++20
9680b57cec5SDimitry Andric    is_permutation(ForwardIterator1 first1, ForwardIterator1 last1,
9690b57cec5SDimitry Andric                   ForwardIterator2 first2);
9700b57cec5SDimitry Andric
9710b57cec5SDimitry Andrictemplate<class ForwardIterator1, class ForwardIterator2>
9720b57cec5SDimitry Andric    constexpr bool      // constexpr in C++20
9730b57cec5SDimitry Andric    is_permutation(ForwardIterator1 first1, ForwardIterator1 last1,
9740b57cec5SDimitry Andric                   ForwardIterator2 first2, ForwardIterator2 last2); // **C++14**
9750b57cec5SDimitry Andric
9760b57cec5SDimitry Andrictemplate<class ForwardIterator1, class ForwardIterator2, class BinaryPredicate>
9770b57cec5SDimitry Andric    constexpr bool      // constexpr in C++20
9780b57cec5SDimitry Andric    is_permutation(ForwardIterator1 first1, ForwardIterator1 last1,
9790b57cec5SDimitry Andric                   ForwardIterator2 first2, BinaryPredicate pred);
9800b57cec5SDimitry Andric
9810b57cec5SDimitry Andrictemplate<class ForwardIterator1, class ForwardIterator2, class BinaryPredicate>
9820b57cec5SDimitry Andric    constexpr bool      // constexpr in C++20
9830b57cec5SDimitry Andric    is_permutation(ForwardIterator1 first1, ForwardIterator1 last1,
9840b57cec5SDimitry Andric                   ForwardIterator2 first2, ForwardIterator2 last2,
9850b57cec5SDimitry Andric                   BinaryPredicate pred);  // **C++14**
9860b57cec5SDimitry Andric
9870b57cec5SDimitry Andrictemplate <class ForwardIterator1, class ForwardIterator2>
9880b57cec5SDimitry Andric    constexpr ForwardIterator1      // constexpr in C++20
9890b57cec5SDimitry Andric    search(ForwardIterator1 first1, ForwardIterator1 last1,
9900b57cec5SDimitry Andric           ForwardIterator2 first2, ForwardIterator2 last2);
9910b57cec5SDimitry Andric
9920b57cec5SDimitry Andrictemplate <class ForwardIterator1, class ForwardIterator2, class BinaryPredicate>
9930b57cec5SDimitry Andric    constexpr ForwardIterator1      // constexpr in C++20
9940b57cec5SDimitry Andric    search(ForwardIterator1 first1, ForwardIterator1 last1,
9950b57cec5SDimitry Andric           ForwardIterator2 first2, ForwardIterator2 last2, BinaryPredicate pred);
9960b57cec5SDimitry Andric
9970b57cec5SDimitry Andrictemplate <class ForwardIterator, class Size, class T>
9980b57cec5SDimitry Andric    constexpr ForwardIterator       // constexpr in C++20
9990b57cec5SDimitry Andric    search_n(ForwardIterator first, ForwardIterator last, Size count, const T& value);
10000b57cec5SDimitry Andric
10010b57cec5SDimitry Andrictemplate <class ForwardIterator, class Size, class T, class BinaryPredicate>
10020b57cec5SDimitry Andric    constexpr ForwardIterator       // constexpr in C++20
10030b57cec5SDimitry Andric    search_n(ForwardIterator first, ForwardIterator last,
10040b57cec5SDimitry Andric             Size count, const T& value, BinaryPredicate pred);
10050b57cec5SDimitry Andric
10060b57cec5SDimitry Andrictemplate <class InputIterator, class OutputIterator>
1007480093f4SDimitry Andric    constexpr OutputIterator      // constexpr in C++20
10080b57cec5SDimitry Andric    copy(InputIterator first, InputIterator last, OutputIterator result);
10090b57cec5SDimitry Andric
10100b57cec5SDimitry Andrictemplate<class InputIterator, class OutputIterator, class Predicate>
1011480093f4SDimitry Andric    constexpr OutputIterator      // constexpr in C++20
10120b57cec5SDimitry Andric    copy_if(InputIterator first, InputIterator last,
10130b57cec5SDimitry Andric            OutputIterator result, Predicate pred);
10140b57cec5SDimitry Andric
10150b57cec5SDimitry Andrictemplate<class InputIterator, class Size, class OutputIterator>
1016480093f4SDimitry Andric    constexpr OutputIterator      // constexpr in C++20
10170b57cec5SDimitry Andric    copy_n(InputIterator first, Size n, OutputIterator result);
10180b57cec5SDimitry Andric
10190b57cec5SDimitry Andrictemplate <class BidirectionalIterator1, class BidirectionalIterator2>
1020480093f4SDimitry Andric    constexpr BidirectionalIterator2      // constexpr in C++20
10210b57cec5SDimitry Andric    copy_backward(BidirectionalIterator1 first, BidirectionalIterator1 last,
10220b57cec5SDimitry Andric                  BidirectionalIterator2 result);
10230b57cec5SDimitry Andric
102481ad6265SDimitry Andric// [alg.move], move
102581ad6265SDimitry Andrictemplate<class InputIterator, class OutputIterator>
102681ad6265SDimitry Andric    constexpr OutputIterator move(InputIterator first, InputIterator last,
102781ad6265SDimitry Andric                                OutputIterator result);
102881ad6265SDimitry Andric
102981ad6265SDimitry Andrictemplate<class BidirectionalIterator1, class BidirectionalIterator2>
103081ad6265SDimitry Andric    constexpr BidirectionalIterator2
103181ad6265SDimitry Andric    move_backward(BidirectionalIterator1 first, BidirectionalIterator1 last,
103281ad6265SDimitry Andric                  BidirectionalIterator2 result);
103381ad6265SDimitry Andric
10340b57cec5SDimitry Andrictemplate <class ForwardIterator1, class ForwardIterator2>
1035e8d8bef9SDimitry Andric    constexpr ForwardIterator2    // constexpr in C++20
10360b57cec5SDimitry Andric    swap_ranges(ForwardIterator1 first1, ForwardIterator1 last1, ForwardIterator2 first2);
10370b57cec5SDimitry Andric
103881ad6265SDimitry Andricnamespace ranges {
103981ad6265SDimitry Andric    template<class I1, class I2>
104081ad6265SDimitry Andric    using swap_ranges_result = in_in_result<I1, I2>;
104181ad6265SDimitry Andric
104281ad6265SDimitry Andrictemplate<input_iterator I1, sentinel_for<I1> S1, input_iterator I2, sentinel_for<I2> S2>
104381ad6265SDimitry Andric        requires indirectly_swappable<I1, I2>
104481ad6265SDimitry Andric    constexpr ranges::swap_ranges_result<I1, I2>
104581ad6265SDimitry Andric        swap_ranges(I1 first1, S1 last1, I2 first2, S2 last2);
104681ad6265SDimitry Andric
104781ad6265SDimitry Andrictemplate<input_range R1, input_range R2>
104881ad6265SDimitry Andric        requires indirectly_swappable<iterator_t<R1>, iterator_t<R2>>
104981ad6265SDimitry Andric    constexpr ranges::swap_ranges_result<borrowed_iterator_t<R1>, borrowed_iterator_t<R2>>
105081ad6265SDimitry Andric        swap_ranges(R1&& r1, R2&& r2);
105181ad6265SDimitry Andric}
105281ad6265SDimitry Andric
10530b57cec5SDimitry Andrictemplate <class ForwardIterator1, class ForwardIterator2>
1054e8d8bef9SDimitry Andric    constexpr void                // constexpr in C++20
10550b57cec5SDimitry Andric    iter_swap(ForwardIterator1 a, ForwardIterator2 b);
10560b57cec5SDimitry Andric
10570b57cec5SDimitry Andrictemplate <class InputIterator, class OutputIterator, class UnaryOperation>
10580b57cec5SDimitry Andric    constexpr OutputIterator      // constexpr in C++20
10590b57cec5SDimitry Andric    transform(InputIterator first, InputIterator last, OutputIterator result, UnaryOperation op);
10600b57cec5SDimitry Andric
10610b57cec5SDimitry Andrictemplate <class InputIterator1, class InputIterator2, class OutputIterator, class BinaryOperation>
10620b57cec5SDimitry Andric    constexpr OutputIterator      // constexpr in C++20
10630b57cec5SDimitry Andric    transform(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2,
10640b57cec5SDimitry Andric              OutputIterator result, BinaryOperation binary_op);
10650b57cec5SDimitry Andric
10660b57cec5SDimitry Andrictemplate <class ForwardIterator, class T>
10670b57cec5SDimitry Andric    constexpr void      // constexpr in C++20
10680b57cec5SDimitry Andric    replace(ForwardIterator first, ForwardIterator last, const T& old_value, const T& new_value);
10690b57cec5SDimitry Andric
10700b57cec5SDimitry Andrictemplate <class ForwardIterator, class Predicate, class T>
10710b57cec5SDimitry Andric    constexpr void      // constexpr in C++20
10720b57cec5SDimitry Andric    replace_if(ForwardIterator first, ForwardIterator last, Predicate pred, const T& new_value);
10730b57cec5SDimitry Andric
10740b57cec5SDimitry Andrictemplate <class InputIterator, class OutputIterator, class T>
10750b57cec5SDimitry Andric    constexpr OutputIterator      // constexpr in C++20
10760b57cec5SDimitry Andric    replace_copy(InputIterator first, InputIterator last, OutputIterator result,
10770b57cec5SDimitry Andric                 const T& old_value, const T& new_value);
10780b57cec5SDimitry Andric
10790b57cec5SDimitry Andrictemplate <class InputIterator, class OutputIterator, class Predicate, class T>
10800b57cec5SDimitry Andric    constexpr OutputIterator      // constexpr in C++20
10810b57cec5SDimitry Andric    replace_copy_if(InputIterator first, InputIterator last, OutputIterator result, Predicate pred, const T& new_value);
10820b57cec5SDimitry Andric
10830b57cec5SDimitry Andrictemplate <class ForwardIterator, class T>
10840b57cec5SDimitry Andric    constexpr void      // constexpr in C++20
10850b57cec5SDimitry Andric    fill(ForwardIterator first, ForwardIterator last, const T& value);
10860b57cec5SDimitry Andric
10870b57cec5SDimitry Andrictemplate <class OutputIterator, class Size, class T>
10880b57cec5SDimitry Andric    constexpr OutputIterator      // constexpr in C++20
10890b57cec5SDimitry Andric    fill_n(OutputIterator first, Size n, const T& value);
10900b57cec5SDimitry Andric
10910b57cec5SDimitry Andrictemplate <class ForwardIterator, class Generator>
10920b57cec5SDimitry Andric    constexpr void      // constexpr in C++20
10930b57cec5SDimitry Andric    generate(ForwardIterator first, ForwardIterator last, Generator gen);
10940b57cec5SDimitry Andric
10950b57cec5SDimitry Andrictemplate <class OutputIterator, class Size, class Generator>
10960b57cec5SDimitry Andric    constexpr OutputIterator      // constexpr in C++20
10970b57cec5SDimitry Andric    generate_n(OutputIterator first, Size n, Generator gen);
10980b57cec5SDimitry Andric
10990b57cec5SDimitry Andrictemplate <class ForwardIterator, class T>
11000b57cec5SDimitry Andric    constexpr ForwardIterator     // constexpr in C++20
11010b57cec5SDimitry Andric    remove(ForwardIterator first, ForwardIterator last, const T& value);
11020b57cec5SDimitry Andric
11030b57cec5SDimitry Andrictemplate <class ForwardIterator, class Predicate>
11040b57cec5SDimitry Andric    constexpr ForwardIterator     // constexpr in C++20
11050b57cec5SDimitry Andric    remove_if(ForwardIterator first, ForwardIterator last, Predicate pred);
11060b57cec5SDimitry Andric
11070b57cec5SDimitry Andrictemplate <class InputIterator, class OutputIterator, class T>
11080b57cec5SDimitry Andric    constexpr OutputIterator     // constexpr in C++20
11090b57cec5SDimitry Andric    remove_copy(InputIterator first, InputIterator last, OutputIterator result, const T& value);
11100b57cec5SDimitry Andric
11110b57cec5SDimitry Andrictemplate <class InputIterator, class OutputIterator, class Predicate>
11120b57cec5SDimitry Andric    constexpr OutputIterator     // constexpr in C++20
11130b57cec5SDimitry Andric    remove_copy_if(InputIterator first, InputIterator last, OutputIterator result, Predicate pred);
11140b57cec5SDimitry Andric
11150b57cec5SDimitry Andrictemplate <class ForwardIterator>
1116e8d8bef9SDimitry Andric    constexpr ForwardIterator    // constexpr in C++20
11170b57cec5SDimitry Andric    unique(ForwardIterator first, ForwardIterator last);
11180b57cec5SDimitry Andric
11190b57cec5SDimitry Andrictemplate <class ForwardIterator, class BinaryPredicate>
1120e8d8bef9SDimitry Andric    constexpr ForwardIterator    // constexpr in C++20
11210b57cec5SDimitry Andric    unique(ForwardIterator first, ForwardIterator last, BinaryPredicate pred);
11220b57cec5SDimitry Andric
11230b57cec5SDimitry Andrictemplate <class InputIterator, class OutputIterator>
1124e8d8bef9SDimitry Andric    constexpr OutputIterator     // constexpr in C++20
11250b57cec5SDimitry Andric    unique_copy(InputIterator first, InputIterator last, OutputIterator result);
11260b57cec5SDimitry Andric
11270b57cec5SDimitry Andrictemplate <class InputIterator, class OutputIterator, class BinaryPredicate>
1128e8d8bef9SDimitry Andric    constexpr OutputIterator     // constexpr in C++20
11290b57cec5SDimitry Andric    unique_copy(InputIterator first, InputIterator last, OutputIterator result, BinaryPredicate pred);
11300b57cec5SDimitry Andric
11310b57cec5SDimitry Andrictemplate <class BidirectionalIterator>
1132e8d8bef9SDimitry Andric    constexpr void               // constexpr in C++20
11330b57cec5SDimitry Andric    reverse(BidirectionalIterator first, BidirectionalIterator last);
11340b57cec5SDimitry Andric
11350b57cec5SDimitry Andrictemplate <class BidirectionalIterator, class OutputIterator>
11360b57cec5SDimitry Andric    constexpr OutputIterator       // constexpr in C++20
11370b57cec5SDimitry Andric    reverse_copy(BidirectionalIterator first, BidirectionalIterator last, OutputIterator result);
11380b57cec5SDimitry Andric
11390b57cec5SDimitry Andrictemplate <class ForwardIterator>
1140e8d8bef9SDimitry Andric    constexpr ForwardIterator      // constexpr in C++20
11410b57cec5SDimitry Andric    rotate(ForwardIterator first, ForwardIterator middle, ForwardIterator last);
11420b57cec5SDimitry Andric
11430b57cec5SDimitry Andrictemplate <class ForwardIterator, class OutputIterator>
1144e8d8bef9SDimitry Andric    constexpr OutputIterator       // constexpr in C++20
11450b57cec5SDimitry Andric    rotate_copy(ForwardIterator first, ForwardIterator middle, ForwardIterator last, OutputIterator result);
11460b57cec5SDimitry Andric
11470b57cec5SDimitry Andrictemplate <class RandomAccessIterator>
11480b57cec5SDimitry Andric    void
11490b57cec5SDimitry Andric    random_shuffle(RandomAccessIterator first, RandomAccessIterator last); // deprecated in C++14, removed in C++17
11500b57cec5SDimitry Andric
11510b57cec5SDimitry Andrictemplate <class RandomAccessIterator, class RandomNumberGenerator>
11520b57cec5SDimitry Andric    void
11530b57cec5SDimitry Andric    random_shuffle(RandomAccessIterator first, RandomAccessIterator last,
11540b57cec5SDimitry Andric                   RandomNumberGenerator& rand);  // deprecated in C++14, removed in C++17
11550b57cec5SDimitry Andric
11560b57cec5SDimitry Andrictemplate<class PopulationIterator, class SampleIterator,
11570b57cec5SDimitry Andric         class Distance, class UniformRandomBitGenerator>
11580b57cec5SDimitry Andric    SampleIterator sample(PopulationIterator first, PopulationIterator last,
11590b57cec5SDimitry Andric                          SampleIterator out, Distance n,
11600b57cec5SDimitry Andric                          UniformRandomBitGenerator&& g); // C++17
11610b57cec5SDimitry Andric
11620b57cec5SDimitry Andrictemplate<class RandomAccessIterator, class UniformRandomNumberGenerator>
11630b57cec5SDimitry Andric    void shuffle(RandomAccessIterator first, RandomAccessIterator last,
11640b57cec5SDimitry Andric                 UniformRandomNumberGenerator&& g);
11650b57cec5SDimitry Andric
1166e8d8bef9SDimitry Andrictemplate<class ForwardIterator>
1167e8d8bef9SDimitry Andric  constexpr ForwardIterator
1168e8d8bef9SDimitry Andric    shift_left(ForwardIterator first, ForwardIterator last,
1169e8d8bef9SDimitry Andric               typename iterator_traits<ForwardIterator>::difference_type n); // C++20
1170e8d8bef9SDimitry Andric
1171e8d8bef9SDimitry Andrictemplate<class ForwardIterator>
1172e8d8bef9SDimitry Andric  constexpr ForwardIterator
1173e8d8bef9SDimitry Andric    shift_right(ForwardIterator first, ForwardIterator last,
1174e8d8bef9SDimitry Andric                typename iterator_traits<ForwardIterator>::difference_type n); // C++20
1175e8d8bef9SDimitry Andric
11760b57cec5SDimitry Andrictemplate <class InputIterator, class Predicate>
11770b57cec5SDimitry Andric    constexpr bool  // constexpr in C++20
11780b57cec5SDimitry Andric    is_partitioned(InputIterator first, InputIterator last, Predicate pred);
11790b57cec5SDimitry Andric
11800b57cec5SDimitry Andrictemplate <class ForwardIterator, class Predicate>
1181e8d8bef9SDimitry Andric    constexpr ForwardIterator  // constexpr in C++20
11820b57cec5SDimitry Andric    partition(ForwardIterator first, ForwardIterator last, Predicate pred);
11830b57cec5SDimitry Andric
11840b57cec5SDimitry Andrictemplate <class InputIterator, class OutputIterator1,
11850b57cec5SDimitry Andric          class OutputIterator2, class Predicate>
11860b57cec5SDimitry Andric    constexpr pair<OutputIterator1, OutputIterator2>   // constexpr in C++20
11870b57cec5SDimitry Andric    partition_copy(InputIterator first, InputIterator last,
11880b57cec5SDimitry Andric                   OutputIterator1 out_true, OutputIterator2 out_false,
11890b57cec5SDimitry Andric                   Predicate pred);
11900b57cec5SDimitry Andric
11910b57cec5SDimitry Andrictemplate <class ForwardIterator, class Predicate>
11920b57cec5SDimitry Andric    ForwardIterator
11930b57cec5SDimitry Andric    stable_partition(ForwardIterator first, ForwardIterator last, Predicate pred);
11940b57cec5SDimitry Andric
11950b57cec5SDimitry Andrictemplate<class ForwardIterator, class Predicate>
11960b57cec5SDimitry Andric    constexpr ForwardIterator  // constexpr in C++20
11970b57cec5SDimitry Andric    partition_point(ForwardIterator first, ForwardIterator last, Predicate pred);
11980b57cec5SDimitry Andric
11990b57cec5SDimitry Andrictemplate <class ForwardIterator>
12000b57cec5SDimitry Andric    constexpr bool  // constexpr in C++20
12010b57cec5SDimitry Andric    is_sorted(ForwardIterator first, ForwardIterator last);
12020b57cec5SDimitry Andric
12030b57cec5SDimitry Andrictemplate <class ForwardIterator, class Compare>
1204e8d8bef9SDimitry Andric    constexpr bool  // constexpr in C++20
12050b57cec5SDimitry Andric    is_sorted(ForwardIterator first, ForwardIterator last, Compare comp);
12060b57cec5SDimitry Andric
12070b57cec5SDimitry Andrictemplate<class ForwardIterator>
12080b57cec5SDimitry Andric    constexpr ForwardIterator    // constexpr in C++20
12090b57cec5SDimitry Andric    is_sorted_until(ForwardIterator first, ForwardIterator last);
12100b57cec5SDimitry Andric
12110b57cec5SDimitry Andrictemplate <class ForwardIterator, class Compare>
12120b57cec5SDimitry Andric    constexpr ForwardIterator    // constexpr in C++20
12130b57cec5SDimitry Andric    is_sorted_until(ForwardIterator first, ForwardIterator last, Compare comp);
12140b57cec5SDimitry Andric
12150b57cec5SDimitry Andrictemplate <class RandomAccessIterator>
1216fe6060f1SDimitry Andric    constexpr void               // constexpr in C++20
12170b57cec5SDimitry Andric    sort(RandomAccessIterator first, RandomAccessIterator last);
12180b57cec5SDimitry Andric
12190b57cec5SDimitry Andrictemplate <class RandomAccessIterator, class Compare>
1220fe6060f1SDimitry Andric    constexpr void               // constexpr in C++20
12210b57cec5SDimitry Andric    sort(RandomAccessIterator first, RandomAccessIterator last, Compare comp);
12220b57cec5SDimitry Andric
12230b57cec5SDimitry Andrictemplate <class RandomAccessIterator>
12240b57cec5SDimitry Andric    void
12250b57cec5SDimitry Andric    stable_sort(RandomAccessIterator first, RandomAccessIterator last);
12260b57cec5SDimitry Andric
12270b57cec5SDimitry Andrictemplate <class RandomAccessIterator, class Compare>
12280b57cec5SDimitry Andric    void
12290b57cec5SDimitry Andric    stable_sort(RandomAccessIterator first, RandomAccessIterator last, Compare comp);
12300b57cec5SDimitry Andric
12310b57cec5SDimitry Andrictemplate <class RandomAccessIterator>
1232fe6060f1SDimitry Andric    constexpr void                    // constexpr in C++20
12330b57cec5SDimitry Andric    partial_sort(RandomAccessIterator first, RandomAccessIterator middle, RandomAccessIterator last);
12340b57cec5SDimitry Andric
12350b57cec5SDimitry Andrictemplate <class RandomAccessIterator, class Compare>
1236fe6060f1SDimitry Andric    constexpr void                    // constexpr in C++20
12370b57cec5SDimitry Andric    partial_sort(RandomAccessIterator first, RandomAccessIterator middle, RandomAccessIterator last, Compare comp);
12380b57cec5SDimitry Andric
12390b57cec5SDimitry Andrictemplate <class InputIterator, class RandomAccessIterator>
1240fe6060f1SDimitry Andric    constexpr RandomAccessIterator    // constexpr in C++20
12410b57cec5SDimitry Andric    partial_sort_copy(InputIterator first, InputIterator last,
12420b57cec5SDimitry Andric                      RandomAccessIterator result_first, RandomAccessIterator result_last);
12430b57cec5SDimitry Andric
12440b57cec5SDimitry Andrictemplate <class InputIterator, class RandomAccessIterator, class Compare>
1245fe6060f1SDimitry Andric    constexpr RandomAccessIterator    // constexpr in C++20
12460b57cec5SDimitry Andric    partial_sort_copy(InputIterator first, InputIterator last,
12470b57cec5SDimitry Andric                      RandomAccessIterator result_first, RandomAccessIterator result_last, Compare comp);
12480b57cec5SDimitry Andric
12490b57cec5SDimitry Andrictemplate <class RandomAccessIterator>
1250fe6060f1SDimitry Andric    constexpr void                    // constexpr in C++20
12510b57cec5SDimitry Andric    nth_element(RandomAccessIterator first, RandomAccessIterator nth, RandomAccessIterator last);
12520b57cec5SDimitry Andric
12530b57cec5SDimitry Andrictemplate <class RandomAccessIterator, class Compare>
1254fe6060f1SDimitry Andric    constexpr void                    // constexpr in C++20
12550b57cec5SDimitry Andric    nth_element(RandomAccessIterator first, RandomAccessIterator nth, RandomAccessIterator last, Compare comp);
12560b57cec5SDimitry Andric
12570b57cec5SDimitry Andrictemplate <class ForwardIterator, class T>
12580b57cec5SDimitry Andric    constexpr ForwardIterator                         // constexpr in C++20
12590b57cec5SDimitry Andric    lower_bound(ForwardIterator first, ForwardIterator last, const T& value);
12600b57cec5SDimitry Andric
12610b57cec5SDimitry Andrictemplate <class ForwardIterator, class T, class Compare>
12620b57cec5SDimitry Andric    constexpr ForwardIterator                         // constexpr in C++20
12630b57cec5SDimitry Andric    lower_bound(ForwardIterator first, ForwardIterator last, const T& value, Compare comp);
12640b57cec5SDimitry Andric
12650b57cec5SDimitry Andrictemplate <class ForwardIterator, class T>
12660b57cec5SDimitry Andric    constexpr ForwardIterator                         // constexpr in C++20
12670b57cec5SDimitry Andric    upper_bound(ForwardIterator first, ForwardIterator last, const T& value);
12680b57cec5SDimitry Andric
12690b57cec5SDimitry Andrictemplate <class ForwardIterator, class T, class Compare>
12700b57cec5SDimitry Andric    constexpr ForwardIterator                         // constexpr in C++20
12710b57cec5SDimitry Andric    upper_bound(ForwardIterator first, ForwardIterator last, const T& value, Compare comp);
12720b57cec5SDimitry Andric
12730b57cec5SDimitry Andrictemplate <class ForwardIterator, class T>
12740b57cec5SDimitry Andric    constexpr pair<ForwardIterator, ForwardIterator>  // constexpr in C++20
12750b57cec5SDimitry Andric    equal_range(ForwardIterator first, ForwardIterator last, const T& value);
12760b57cec5SDimitry Andric
12770b57cec5SDimitry Andrictemplate <class ForwardIterator, class T, class Compare>
12780b57cec5SDimitry Andric    constexpr pair<ForwardIterator, ForwardIterator>  // constexpr in C++20
12790b57cec5SDimitry Andric    equal_range(ForwardIterator first, ForwardIterator last, const T& value, Compare comp);
12800b57cec5SDimitry Andric
12810b57cec5SDimitry Andrictemplate <class ForwardIterator, class T>
12820b57cec5SDimitry Andric    constexpr bool                                    // constexpr in C++20
12830b57cec5SDimitry Andric    binary_search(ForwardIterator first, ForwardIterator last, const T& value);
12840b57cec5SDimitry Andric
12850b57cec5SDimitry Andrictemplate <class ForwardIterator, class T, class Compare>
12860b57cec5SDimitry Andric    constexpr bool                                    // constexpr in C++20
12870b57cec5SDimitry Andric    binary_search(ForwardIterator first, ForwardIterator last, const T& value, Compare comp);
12880b57cec5SDimitry Andric
12890b57cec5SDimitry Andrictemplate <class InputIterator1, class InputIterator2, class OutputIterator>
1290e8d8bef9SDimitry Andric    constexpr OutputIterator                          // constexpr in C++20
12910b57cec5SDimitry Andric    merge(InputIterator1 first1, InputIterator1 last1,
12920b57cec5SDimitry Andric          InputIterator2 first2, InputIterator2 last2, OutputIterator result);
12930b57cec5SDimitry Andric
12940b57cec5SDimitry Andrictemplate <class InputIterator1, class InputIterator2, class OutputIterator, class Compare>
1295e8d8bef9SDimitry Andric    constexpr OutputIterator                          // constexpr in C++20
12960b57cec5SDimitry Andric    merge(InputIterator1 first1, InputIterator1 last1,
12970b57cec5SDimitry Andric          InputIterator2 first2, InputIterator2 last2, OutputIterator result, Compare comp);
12980b57cec5SDimitry Andric
12990b57cec5SDimitry Andrictemplate <class BidirectionalIterator>
13000b57cec5SDimitry Andric    void
13010b57cec5SDimitry Andric    inplace_merge(BidirectionalIterator first, BidirectionalIterator middle, BidirectionalIterator last);
13020b57cec5SDimitry Andric
13030b57cec5SDimitry Andrictemplate <class BidirectionalIterator, class Compare>
13040b57cec5SDimitry Andric    void
13050b57cec5SDimitry Andric    inplace_merge(BidirectionalIterator first, BidirectionalIterator middle, BidirectionalIterator last, Compare comp);
13060b57cec5SDimitry Andric
13070b57cec5SDimitry Andrictemplate <class InputIterator1, class InputIterator2>
13080b57cec5SDimitry Andric    constexpr bool                                    // constexpr in C++20
13090b57cec5SDimitry Andric    includes(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2, InputIterator2 last2);
13100b57cec5SDimitry Andric
13110b57cec5SDimitry Andrictemplate <class InputIterator1, class InputIterator2, class Compare>
13120b57cec5SDimitry Andric    constexpr bool                                    // constexpr in C++20
13130b57cec5SDimitry Andric    includes(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2, InputIterator2 last2, Compare comp);
13140b57cec5SDimitry Andric
13150b57cec5SDimitry Andrictemplate <class InputIterator1, class InputIterator2, class OutputIterator>
1316e8d8bef9SDimitry Andric    constexpr OutputIterator                          // constexpr in C++20
13170b57cec5SDimitry Andric    set_union(InputIterator1 first1, InputIterator1 last1,
13180b57cec5SDimitry Andric              InputIterator2 first2, InputIterator2 last2, OutputIterator result);
13190b57cec5SDimitry Andric
13200b57cec5SDimitry Andrictemplate <class InputIterator1, class InputIterator2, class OutputIterator, class Compare>
1321e8d8bef9SDimitry Andric    constexpr OutputIterator                          // constexpr in C++20
13220b57cec5SDimitry Andric    set_union(InputIterator1 first1, InputIterator1 last1,
13230b57cec5SDimitry Andric              InputIterator2 first2, InputIterator2 last2, OutputIterator result, Compare comp);
13240b57cec5SDimitry Andric
13250b57cec5SDimitry Andrictemplate <class InputIterator1, class InputIterator2, class OutputIterator>
13260b57cec5SDimitry Andric    constexpr OutputIterator                         // constexpr in C++20
13270b57cec5SDimitry Andric    set_intersection(InputIterator1 first1, InputIterator1 last1,
13280b57cec5SDimitry Andric                     InputIterator2 first2, InputIterator2 last2, OutputIterator result);
13290b57cec5SDimitry Andric
13300b57cec5SDimitry Andrictemplate <class InputIterator1, class InputIterator2, class OutputIterator, class Compare>
13310b57cec5SDimitry Andric    constexpr OutputIterator                         // constexpr in C++20
13320b57cec5SDimitry Andric    set_intersection(InputIterator1 first1, InputIterator1 last1,
13330b57cec5SDimitry Andric                     InputIterator2 first2, InputIterator2 last2, OutputIterator result, Compare comp);
13340b57cec5SDimitry Andric
13350b57cec5SDimitry Andrictemplate <class InputIterator1, class InputIterator2, class OutputIterator>
1336e8d8bef9SDimitry Andric    constexpr OutputIterator                         // constexpr in C++20
13370b57cec5SDimitry Andric    set_difference(InputIterator1 first1, InputIterator1 last1,
13380b57cec5SDimitry Andric                   InputIterator2 first2, InputIterator2 last2, OutputIterator result);
13390b57cec5SDimitry Andric
13400b57cec5SDimitry Andrictemplate <class InputIterator1, class InputIterator2, class OutputIterator, class Compare>
1341e8d8bef9SDimitry Andric    constexpr OutputIterator                         // constexpr in C++20
13420b57cec5SDimitry Andric    set_difference(InputIterator1 first1, InputIterator1 last1,
13430b57cec5SDimitry Andric                   InputIterator2 first2, InputIterator2 last2, OutputIterator result, Compare comp);
13440b57cec5SDimitry Andric
13450b57cec5SDimitry Andrictemplate <class InputIterator1, class InputIterator2, class OutputIterator>
1346e8d8bef9SDimitry Andric    constexpr OutputIterator                         // constexpr in C++20
13470b57cec5SDimitry Andric    set_symmetric_difference(InputIterator1 first1, InputIterator1 last1,
13480b57cec5SDimitry Andric                             InputIterator2 first2, InputIterator2 last2, OutputIterator result);
13490b57cec5SDimitry Andric
13500b57cec5SDimitry Andrictemplate <class InputIterator1, class InputIterator2, class OutputIterator, class Compare>
1351e8d8bef9SDimitry Andric    constexpr OutputIterator                         // constexpr in C++20
13520b57cec5SDimitry Andric    set_symmetric_difference(InputIterator1 first1, InputIterator1 last1,
13530b57cec5SDimitry Andric                             InputIterator2 first2, InputIterator2 last2, OutputIterator result, Compare comp);
13540b57cec5SDimitry Andric
13550b57cec5SDimitry Andrictemplate <class RandomAccessIterator>
1356fe6060f1SDimitry Andric    constexpr void                                   // constexpr in C++20
13570b57cec5SDimitry Andric    push_heap(RandomAccessIterator first, RandomAccessIterator last);
13580b57cec5SDimitry Andric
13590b57cec5SDimitry Andrictemplate <class RandomAccessIterator, class Compare>
1360fe6060f1SDimitry Andric    constexpr void                                   // constexpr in C++20
13610b57cec5SDimitry Andric    push_heap(RandomAccessIterator first, RandomAccessIterator last, Compare comp);
13620b57cec5SDimitry Andric
13630b57cec5SDimitry Andrictemplate <class RandomAccessIterator>
1364fe6060f1SDimitry Andric    constexpr void                                   // constexpr in C++20
13650b57cec5SDimitry Andric    pop_heap(RandomAccessIterator first, RandomAccessIterator last);
13660b57cec5SDimitry Andric
13670b57cec5SDimitry Andrictemplate <class RandomAccessIterator, class Compare>
1368fe6060f1SDimitry Andric    constexpr void                                   // constexpr in C++20
13690b57cec5SDimitry Andric    pop_heap(RandomAccessIterator first, RandomAccessIterator last, Compare comp);
13700b57cec5SDimitry Andric
13710b57cec5SDimitry Andrictemplate <class RandomAccessIterator>
1372fe6060f1SDimitry Andric    constexpr void                                   // constexpr in C++20
13730b57cec5SDimitry Andric    make_heap(RandomAccessIterator first, RandomAccessIterator last);
13740b57cec5SDimitry Andric
13750b57cec5SDimitry Andrictemplate <class RandomAccessIterator, class Compare>
1376fe6060f1SDimitry Andric    constexpr void                                   // constexpr in C++20
13770b57cec5SDimitry Andric    make_heap(RandomAccessIterator first, RandomAccessIterator last, Compare comp);
13780b57cec5SDimitry Andric
13790b57cec5SDimitry Andrictemplate <class RandomAccessIterator>
1380fe6060f1SDimitry Andric    constexpr void                                   // constexpr in C++20
13810b57cec5SDimitry Andric    sort_heap(RandomAccessIterator first, RandomAccessIterator last);
13820b57cec5SDimitry Andric
13830b57cec5SDimitry Andrictemplate <class RandomAccessIterator, class Compare>
1384fe6060f1SDimitry Andric    constexpr void                                   // constexpr in C++20
13850b57cec5SDimitry Andric    sort_heap(RandomAccessIterator first, RandomAccessIterator last, Compare comp);
13860b57cec5SDimitry Andric
13870b57cec5SDimitry Andrictemplate <class RandomAccessIterator>
13880b57cec5SDimitry Andric    constexpr bool   // constexpr in C++20
13890b57cec5SDimitry Andric    is_heap(RandomAccessIterator first, RandomAccessiterator last);
13900b57cec5SDimitry Andric
13910b57cec5SDimitry Andrictemplate <class RandomAccessIterator, class Compare>
13920b57cec5SDimitry Andric    constexpr bool   // constexpr in C++20
13930b57cec5SDimitry Andric    is_heap(RandomAccessIterator first, RandomAccessiterator last, Compare comp);
13940b57cec5SDimitry Andric
13950b57cec5SDimitry Andrictemplate <class RandomAccessIterator>
13960b57cec5SDimitry Andric    constexpr RandomAccessIterator   // constexpr in C++20
13970b57cec5SDimitry Andric    is_heap_until(RandomAccessIterator first, RandomAccessiterator last);
13980b57cec5SDimitry Andric
13990b57cec5SDimitry Andrictemplate <class RandomAccessIterator, class Compare>
14000b57cec5SDimitry Andric    constexpr RandomAccessIterator   // constexpr in C++20
14010b57cec5SDimitry Andric    is_heap_until(RandomAccessIterator first, RandomAccessiterator last, Compare comp);
14020b57cec5SDimitry Andric
14030b57cec5SDimitry Andrictemplate <class ForwardIterator>
1404e8d8bef9SDimitry Andric    constexpr ForwardIterator        // constexpr in C++14
1405e8d8bef9SDimitry Andric    min_element(ForwardIterator first, ForwardIterator last);
14060b57cec5SDimitry Andric
14070b57cec5SDimitry Andrictemplate <class ForwardIterator, class Compare>
1408e8d8bef9SDimitry Andric    constexpr ForwardIterator        // constexpr in C++14
1409e8d8bef9SDimitry Andric    min_element(ForwardIterator first, ForwardIterator last, Compare comp);
14100b57cec5SDimitry Andric
14110b57cec5SDimitry Andrictemplate <class T>
1412e8d8bef9SDimitry Andric    constexpr const T&               // constexpr in C++14
1413e8d8bef9SDimitry Andric    min(const T& a, const T& b);
14140b57cec5SDimitry Andric
14150b57cec5SDimitry Andrictemplate <class T, class Compare>
1416e8d8bef9SDimitry Andric    constexpr const T&               // constexpr in C++14
1417e8d8bef9SDimitry Andric    min(const T& a, const T& b, Compare comp);
14180b57cec5SDimitry Andric
14190b57cec5SDimitry Andrictemplate<class T>
1420e8d8bef9SDimitry Andric    constexpr T                      // constexpr in C++14
1421e8d8bef9SDimitry Andric    min(initializer_list<T> t);
14220b57cec5SDimitry Andric
14230b57cec5SDimitry Andrictemplate<class T, class Compare>
1424e8d8bef9SDimitry Andric    constexpr T                      // constexpr in C++14
1425e8d8bef9SDimitry Andric    min(initializer_list<T> t, Compare comp);
14260b57cec5SDimitry Andric
14270b57cec5SDimitry Andrictemplate<class T>
14280b57cec5SDimitry Andric    constexpr const T& clamp(const T& v, const T& lo, const T& hi);               // C++17
14290b57cec5SDimitry Andric
14300b57cec5SDimitry Andrictemplate<class T, class Compare>
14310b57cec5SDimitry Andric    constexpr const T& clamp(const T& v, const T& lo, const T& hi, Compare comp); // C++17
14320b57cec5SDimitry Andric
14330b57cec5SDimitry Andrictemplate <class ForwardIterator>
1434e8d8bef9SDimitry Andric    constexpr ForwardIterator        // constexpr in C++14
1435e8d8bef9SDimitry Andric    max_element(ForwardIterator first, ForwardIterator last);
14360b57cec5SDimitry Andric
14370b57cec5SDimitry Andrictemplate <class ForwardIterator, class Compare>
1438e8d8bef9SDimitry Andric    constexpr ForwardIterator        // constexpr in C++14
1439e8d8bef9SDimitry Andric    max_element(ForwardIterator first, ForwardIterator last, Compare comp);
14400b57cec5SDimitry Andric
14410b57cec5SDimitry Andrictemplate <class T>
1442e8d8bef9SDimitry Andric    constexpr const T&               // constexpr in C++14
1443e8d8bef9SDimitry Andric    max(const T& a, const T& b);
14440b57cec5SDimitry Andric
14450b57cec5SDimitry Andrictemplate <class T, class Compare>
1446e8d8bef9SDimitry Andric    constexpr const T&               // constexpr in C++14
1447e8d8bef9SDimitry Andric    max(const T& a, const T& b, Compare comp);
14480b57cec5SDimitry Andric
14490b57cec5SDimitry Andrictemplate<class T>
1450e8d8bef9SDimitry Andric    constexpr T                      // constexpr in C++14
1451e8d8bef9SDimitry Andric    max(initializer_list<T> t);
14520b57cec5SDimitry Andric
14530b57cec5SDimitry Andrictemplate<class T, class Compare>
1454e8d8bef9SDimitry Andric    constexpr T                      // constexpr in C++14
1455e8d8bef9SDimitry Andric    max(initializer_list<T> t, Compare comp);
14560b57cec5SDimitry Andric
14570b57cec5SDimitry Andrictemplate<class ForwardIterator>
1458e8d8bef9SDimitry Andric    constexpr pair<ForwardIterator, ForwardIterator>  // constexpr in C++14
1459e8d8bef9SDimitry Andric    minmax_element(ForwardIterator first, ForwardIterator last);
14600b57cec5SDimitry Andric
14610b57cec5SDimitry Andrictemplate<class ForwardIterator, class Compare>
1462e8d8bef9SDimitry Andric    constexpr pair<ForwardIterator, ForwardIterator>  // constexpr in C++14
1463e8d8bef9SDimitry Andric    minmax_element(ForwardIterator first, ForwardIterator last, Compare comp);
14640b57cec5SDimitry Andric
14650b57cec5SDimitry Andrictemplate<class T>
1466e8d8bef9SDimitry Andric    constexpr pair<const T&, const T&>  // constexpr in C++14
1467e8d8bef9SDimitry Andric    minmax(const T& a, const T& b);
14680b57cec5SDimitry Andric
14690b57cec5SDimitry Andrictemplate<class T, class Compare>
1470e8d8bef9SDimitry Andric    constexpr pair<const T&, const T&>  // constexpr in C++14
1471e8d8bef9SDimitry Andric    minmax(const T& a, const T& b, Compare comp);
14720b57cec5SDimitry Andric
14730b57cec5SDimitry Andrictemplate<class T>
1474e8d8bef9SDimitry Andric    constexpr pair<T, T>                // constexpr in C++14
1475e8d8bef9SDimitry Andric    minmax(initializer_list<T> t);
14760b57cec5SDimitry Andric
14770b57cec5SDimitry Andrictemplate<class T, class Compare>
1478e8d8bef9SDimitry Andric    constexpr pair<T, T>                // constexpr in C++14
1479e8d8bef9SDimitry Andric    minmax(initializer_list<T> t, Compare comp);
14800b57cec5SDimitry Andric
14810b57cec5SDimitry Andrictemplate <class InputIterator1, class InputIterator2>
14820b57cec5SDimitry Andric    constexpr bool     // constexpr in C++20
14830b57cec5SDimitry Andric    lexicographical_compare(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2, InputIterator2 last2);
14840b57cec5SDimitry Andric
14850b57cec5SDimitry Andrictemplate <class InputIterator1, class InputIterator2, class Compare>
14860b57cec5SDimitry Andric    constexpr bool     // constexpr in C++20
14870b57cec5SDimitry Andric    lexicographical_compare(InputIterator1 first1, InputIterator1 last1,
14880b57cec5SDimitry Andric                            InputIterator2 first2, InputIterator2 last2, Compare comp);
14890b57cec5SDimitry Andric
14900b57cec5SDimitry Andrictemplate <class BidirectionalIterator>
1491e8d8bef9SDimitry Andric    constexpr bool     // constexpr in C++20
14920b57cec5SDimitry Andric    next_permutation(BidirectionalIterator first, BidirectionalIterator last);
14930b57cec5SDimitry Andric
14940b57cec5SDimitry Andrictemplate <class BidirectionalIterator, class Compare>
1495e8d8bef9SDimitry Andric    constexpr bool     // constexpr in C++20
14960b57cec5SDimitry Andric    next_permutation(BidirectionalIterator first, BidirectionalIterator last, Compare comp);
14970b57cec5SDimitry Andric
14980b57cec5SDimitry Andrictemplate <class BidirectionalIterator>
1499e8d8bef9SDimitry Andric    constexpr bool     // constexpr in C++20
15000b57cec5SDimitry Andric    prev_permutation(BidirectionalIterator first, BidirectionalIterator last);
15010b57cec5SDimitry Andric
15020b57cec5SDimitry Andrictemplate <class BidirectionalIterator, class Compare>
1503e8d8bef9SDimitry Andric    constexpr bool     // constexpr in C++20
15040b57cec5SDimitry Andric    prev_permutation(BidirectionalIterator first, BidirectionalIterator last, Compare comp);
15050b57cec5SDimitry Andric}  // std
15060b57cec5SDimitry Andric
15070b57cec5SDimitry Andric*/
15080b57cec5SDimitry Andric
150981ad6265SDimitry Andric#include <__assert> // all public C++ headers provide the assertion handler
151081ad6265SDimitry Andric#include <__bits>
15110b57cec5SDimitry Andric#include <__config>
1512fe6060f1SDimitry Andric#include <__debug>
1513fe6060f1SDimitry Andric#include <cstddef>
15140b57cec5SDimitry Andric#include <cstring>
1515fe6060f1SDimitry Andric#include <memory>
1516fe6060f1SDimitry Andric#include <type_traits>
15170b57cec5SDimitry Andric#include <version>
15180b57cec5SDimitry Andric
1519fe6060f1SDimitry Andric#include <__algorithm/adjacent_find.h>
1520fe6060f1SDimitry Andric#include <__algorithm/all_of.h>
1521fe6060f1SDimitry Andric#include <__algorithm/any_of.h>
1522fe6060f1SDimitry Andric#include <__algorithm/binary_search.h>
1523fe6060f1SDimitry Andric#include <__algorithm/clamp.h>
1524fe6060f1SDimitry Andric#include <__algorithm/comp.h>
1525fe6060f1SDimitry Andric#include <__algorithm/comp_ref_type.h>
1526fe6060f1SDimitry Andric#include <__algorithm/copy.h>
1527fe6060f1SDimitry Andric#include <__algorithm/copy_backward.h>
1528fe6060f1SDimitry Andric#include <__algorithm/copy_if.h>
1529fe6060f1SDimitry Andric#include <__algorithm/copy_n.h>
1530fe6060f1SDimitry Andric#include <__algorithm/count.h>
1531fe6060f1SDimitry Andric#include <__algorithm/count_if.h>
1532fe6060f1SDimitry Andric#include <__algorithm/equal.h>
1533fe6060f1SDimitry Andric#include <__algorithm/equal_range.h>
1534fe6060f1SDimitry Andric#include <__algorithm/fill.h>
153504eeddc0SDimitry Andric#include <__algorithm/fill_n.h>
1536fe6060f1SDimitry Andric#include <__algorithm/find.h>
1537fe6060f1SDimitry Andric#include <__algorithm/find_end.h>
1538fe6060f1SDimitry Andric#include <__algorithm/find_first_of.h>
1539fe6060f1SDimitry Andric#include <__algorithm/find_if.h>
1540fe6060f1SDimitry Andric#include <__algorithm/find_if_not.h>
1541fe6060f1SDimitry Andric#include <__algorithm/for_each.h>
1542fe6060f1SDimitry Andric#include <__algorithm/for_each_n.h>
1543fe6060f1SDimitry Andric#include <__algorithm/generate.h>
154404eeddc0SDimitry Andric#include <__algorithm/generate_n.h>
1545fe6060f1SDimitry Andric#include <__algorithm/half_positive.h>
154681ad6265SDimitry Andric#include <__algorithm/in_found_result.h>
154781ad6265SDimitry Andric#include <__algorithm/in_fun_result.h>
15481fd87a68SDimitry Andric#include <__algorithm/in_in_out_result.h>
154904eeddc0SDimitry Andric#include <__algorithm/in_in_result.h>
155081ad6265SDimitry Andric#include <__algorithm/in_out_out_result.h>
155104eeddc0SDimitry Andric#include <__algorithm/in_out_result.h>
1552fe6060f1SDimitry Andric#include <__algorithm/includes.h>
1553fe6060f1SDimitry Andric#include <__algorithm/inplace_merge.h>
1554fe6060f1SDimitry Andric#include <__algorithm/is_heap.h>
1555fe6060f1SDimitry Andric#include <__algorithm/is_heap_until.h>
1556fe6060f1SDimitry Andric#include <__algorithm/is_partitioned.h>
1557fe6060f1SDimitry Andric#include <__algorithm/is_permutation.h>
1558fe6060f1SDimitry Andric#include <__algorithm/is_sorted.h>
1559fe6060f1SDimitry Andric#include <__algorithm/is_sorted_until.h>
1560fe6060f1SDimitry Andric#include <__algorithm/iter_swap.h>
1561fe6060f1SDimitry Andric#include <__algorithm/lexicographical_compare.h>
1562fe6060f1SDimitry Andric#include <__algorithm/lower_bound.h>
1563fe6060f1SDimitry Andric#include <__algorithm/make_heap.h>
1564fe6060f1SDimitry Andric#include <__algorithm/max.h>
1565fe6060f1SDimitry Andric#include <__algorithm/max_element.h>
1566fe6060f1SDimitry Andric#include <__algorithm/merge.h>
1567fe6060f1SDimitry Andric#include <__algorithm/min.h>
1568fe6060f1SDimitry Andric#include <__algorithm/min_element.h>
156981ad6265SDimitry Andric#include <__algorithm/min_max_result.h>
1570fe6060f1SDimitry Andric#include <__algorithm/minmax.h>
1571fe6060f1SDimitry Andric#include <__algorithm/minmax_element.h>
1572fe6060f1SDimitry Andric#include <__algorithm/mismatch.h>
1573fe6060f1SDimitry Andric#include <__algorithm/move.h>
1574fe6060f1SDimitry Andric#include <__algorithm/move_backward.h>
1575fe6060f1SDimitry Andric#include <__algorithm/next_permutation.h>
1576fe6060f1SDimitry Andric#include <__algorithm/none_of.h>
1577fe6060f1SDimitry Andric#include <__algorithm/nth_element.h>
1578fe6060f1SDimitry Andric#include <__algorithm/partial_sort.h>
1579fe6060f1SDimitry Andric#include <__algorithm/partial_sort_copy.h>
1580fe6060f1SDimitry Andric#include <__algorithm/partition.h>
1581fe6060f1SDimitry Andric#include <__algorithm/partition_copy.h>
1582fe6060f1SDimitry Andric#include <__algorithm/partition_point.h>
1583fe6060f1SDimitry Andric#include <__algorithm/pop_heap.h>
1584fe6060f1SDimitry Andric#include <__algorithm/prev_permutation.h>
1585fe6060f1SDimitry Andric#include <__algorithm/push_heap.h>
158681ad6265SDimitry Andric#include <__algorithm/ranges_adjacent_find.h>
158781ad6265SDimitry Andric#include <__algorithm/ranges_all_of.h>
158881ad6265SDimitry Andric#include <__algorithm/ranges_any_of.h>
158981ad6265SDimitry Andric#include <__algorithm/ranges_binary_search.h>
159081ad6265SDimitry Andric#include <__algorithm/ranges_copy.h>
159181ad6265SDimitry Andric#include <__algorithm/ranges_copy_backward.h>
159281ad6265SDimitry Andric#include <__algorithm/ranges_copy_if.h>
159381ad6265SDimitry Andric#include <__algorithm/ranges_copy_n.h>
159481ad6265SDimitry Andric#include <__algorithm/ranges_count.h>
159581ad6265SDimitry Andric#include <__algorithm/ranges_count_if.h>
159681ad6265SDimitry Andric#include <__algorithm/ranges_equal.h>
1597fcaf7f86SDimitry Andric#include <__algorithm/ranges_equal_range.h>
159881ad6265SDimitry Andric#include <__algorithm/ranges_fill.h>
159981ad6265SDimitry Andric#include <__algorithm/ranges_fill_n.h>
160081ad6265SDimitry Andric#include <__algorithm/ranges_find.h>
1601753f127fSDimitry Andric#include <__algorithm/ranges_find_end.h>
160281ad6265SDimitry Andric#include <__algorithm/ranges_find_first_of.h>
160381ad6265SDimitry Andric#include <__algorithm/ranges_find_if.h>
160481ad6265SDimitry Andric#include <__algorithm/ranges_find_if_not.h>
160581ad6265SDimitry Andric#include <__algorithm/ranges_for_each.h>
160681ad6265SDimitry Andric#include <__algorithm/ranges_for_each_n.h>
1607*972a253aSDimitry Andric#include <__algorithm/ranges_generate.h>
1608*972a253aSDimitry Andric#include <__algorithm/ranges_generate_n.h>
1609fcaf7f86SDimitry Andric#include <__algorithm/ranges_includes.h>
1610*972a253aSDimitry Andric#include <__algorithm/ranges_is_heap.h>
1611*972a253aSDimitry Andric#include <__algorithm/ranges_is_heap_until.h>
161281ad6265SDimitry Andric#include <__algorithm/ranges_is_partitioned.h>
161381ad6265SDimitry Andric#include <__algorithm/ranges_is_sorted.h>
161481ad6265SDimitry Andric#include <__algorithm/ranges_is_sorted_until.h>
161581ad6265SDimitry Andric#include <__algorithm/ranges_lexicographical_compare.h>
161681ad6265SDimitry Andric#include <__algorithm/ranges_lower_bound.h>
1617753f127fSDimitry Andric#include <__algorithm/ranges_make_heap.h>
161881ad6265SDimitry Andric#include <__algorithm/ranges_max.h>
161981ad6265SDimitry Andric#include <__algorithm/ranges_max_element.h>
1620753f127fSDimitry Andric#include <__algorithm/ranges_merge.h>
162181ad6265SDimitry Andric#include <__algorithm/ranges_min.h>
162281ad6265SDimitry Andric#include <__algorithm/ranges_min_element.h>
162381ad6265SDimitry Andric#include <__algorithm/ranges_minmax.h>
162481ad6265SDimitry Andric#include <__algorithm/ranges_minmax_element.h>
162581ad6265SDimitry Andric#include <__algorithm/ranges_mismatch.h>
162681ad6265SDimitry Andric#include <__algorithm/ranges_move.h>
162781ad6265SDimitry Andric#include <__algorithm/ranges_move_backward.h>
162881ad6265SDimitry Andric#include <__algorithm/ranges_none_of.h>
1629753f127fSDimitry Andric#include <__algorithm/ranges_nth_element.h>
1630fcaf7f86SDimitry Andric#include <__algorithm/ranges_partial_sort.h>
1631fcaf7f86SDimitry Andric#include <__algorithm/ranges_partition.h>
1632fcaf7f86SDimitry Andric#include <__algorithm/ranges_partition_copy.h>
1633fcaf7f86SDimitry Andric#include <__algorithm/ranges_partition_point.h>
1634753f127fSDimitry Andric#include <__algorithm/ranges_pop_heap.h>
1635753f127fSDimitry Andric#include <__algorithm/ranges_push_heap.h>
1636753f127fSDimitry Andric#include <__algorithm/ranges_remove.h>
1637753f127fSDimitry Andric#include <__algorithm/ranges_remove_if.h>
163881ad6265SDimitry Andric#include <__algorithm/ranges_replace.h>
163981ad6265SDimitry Andric#include <__algorithm/ranges_replace_if.h>
164081ad6265SDimitry Andric#include <__algorithm/ranges_reverse.h>
1641753f127fSDimitry Andric#include <__algorithm/ranges_reverse_copy.h>
1642753f127fSDimitry Andric#include <__algorithm/ranges_rotate_copy.h>
1643753f127fSDimitry Andric#include <__algorithm/ranges_search.h>
1644753f127fSDimitry Andric#include <__algorithm/ranges_search_n.h>
1645753f127fSDimitry Andric#include <__algorithm/ranges_set_difference.h>
1646753f127fSDimitry Andric#include <__algorithm/ranges_set_intersection.h>
1647753f127fSDimitry Andric#include <__algorithm/ranges_set_symmetric_difference.h>
1648fcaf7f86SDimitry Andric#include <__algorithm/ranges_set_union.h>
1649fcaf7f86SDimitry Andric#include <__algorithm/ranges_shuffle.h>
165081ad6265SDimitry Andric#include <__algorithm/ranges_sort.h>
1651753f127fSDimitry Andric#include <__algorithm/ranges_sort_heap.h>
1652fcaf7f86SDimitry Andric#include <__algorithm/ranges_stable_partition.h>
165381ad6265SDimitry Andric#include <__algorithm/ranges_stable_sort.h>
165481ad6265SDimitry Andric#include <__algorithm/ranges_swap_ranges.h>
165581ad6265SDimitry Andric#include <__algorithm/ranges_transform.h>
165681ad6265SDimitry Andric#include <__algorithm/ranges_upper_bound.h>
1657fe6060f1SDimitry Andric#include <__algorithm/remove.h>
1658fe6060f1SDimitry Andric#include <__algorithm/remove_copy.h>
1659fe6060f1SDimitry Andric#include <__algorithm/remove_copy_if.h>
1660fe6060f1SDimitry Andric#include <__algorithm/remove_if.h>
1661fe6060f1SDimitry Andric#include <__algorithm/replace.h>
1662fe6060f1SDimitry Andric#include <__algorithm/replace_copy.h>
1663fe6060f1SDimitry Andric#include <__algorithm/replace_copy_if.h>
1664fe6060f1SDimitry Andric#include <__algorithm/replace_if.h>
1665fe6060f1SDimitry Andric#include <__algorithm/reverse.h>
1666fe6060f1SDimitry Andric#include <__algorithm/reverse_copy.h>
1667fe6060f1SDimitry Andric#include <__algorithm/rotate.h>
1668fe6060f1SDimitry Andric#include <__algorithm/rotate_copy.h>
1669fe6060f1SDimitry Andric#include <__algorithm/sample.h>
1670fe6060f1SDimitry Andric#include <__algorithm/search.h>
1671fe6060f1SDimitry Andric#include <__algorithm/search_n.h>
1672fe6060f1SDimitry Andric#include <__algorithm/set_difference.h>
1673fe6060f1SDimitry Andric#include <__algorithm/set_intersection.h>
1674fe6060f1SDimitry Andric#include <__algorithm/set_symmetric_difference.h>
1675fe6060f1SDimitry Andric#include <__algorithm/set_union.h>
1676fe6060f1SDimitry Andric#include <__algorithm/shift_left.h>
1677fe6060f1SDimitry Andric#include <__algorithm/shift_right.h>
1678fe6060f1SDimitry Andric#include <__algorithm/shuffle.h>
1679fe6060f1SDimitry Andric#include <__algorithm/sift_down.h>
1680fe6060f1SDimitry Andric#include <__algorithm/sort.h>
1681fe6060f1SDimitry Andric#include <__algorithm/sort_heap.h>
1682fe6060f1SDimitry Andric#include <__algorithm/stable_partition.h>
1683fe6060f1SDimitry Andric#include <__algorithm/stable_sort.h>
1684fe6060f1SDimitry Andric#include <__algorithm/swap_ranges.h>
1685fe6060f1SDimitry Andric#include <__algorithm/transform.h>
1686fe6060f1SDimitry Andric#include <__algorithm/unique.h>
168704eeddc0SDimitry Andric#include <__algorithm/unique_copy.h>
1688fe6060f1SDimitry Andric#include <__algorithm/unwrap_iter.h>
1689fe6060f1SDimitry Andric#include <__algorithm/upper_bound.h>
16900b57cec5SDimitry Andric
169181ad6265SDimitry Andric#ifndef _LIBCPP_REMOVE_TRANSITIVE_INCLUDES
169281ad6265SDimitry Andric#  include <chrono>
169381ad6265SDimitry Andric#  include <iterator>
169481ad6265SDimitry Andric#  include <utility>
169581ad6265SDimitry Andric#endif
169681ad6265SDimitry Andric
169781ad6265SDimitry Andric// standard-mandated includes
169881ad6265SDimitry Andric#include <initializer_list>
169981ad6265SDimitry Andric
17000b57cec5SDimitry Andric#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
17010b57cec5SDimitry Andric#  pragma GCC system_header
17020b57cec5SDimitry Andric#endif
17030b57cec5SDimitry Andric
1704e40139ffSDimitry Andric#if defined(_LIBCPP_HAS_PARALLEL_ALGORITHMS) && _LIBCPP_STD_VER >= 17
1705e40139ffSDimitry Andric#   include <__pstl_algorithm>
1706e40139ffSDimitry Andric#endif
1707e40139ffSDimitry Andric
17080b57cec5SDimitry Andric#endif // _LIBCPP_ALGORITHM
1709