2 //===----------------------------------------------------------------------===//
4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 // See https://llvm.org/LICENSE.txt for license information.
6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
8 //===----------------------------------------------------------------------===//
10 #ifndef _LIBCPP___ALGORITHM_MISMATCH_H
11 #define _LIBCPP___ALGORITHM_MISMATCH_H
13 #include <__algorithm/comp.h>
15 #include <__iterator/iterator_traits.h>
16 #include <__utility/pair.h>
18 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
19 # pragma GCC system_header
22 _LIBCPP_BEGIN_NAMESPACE_STD
24 template <class _InputIterator1, class _InputIterator2, class _BinaryPredicate>
25 _LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY
26 _LIBCPP_CONSTEXPR_AFTER_CXX17 pair<_InputIterator1, _InputIterator2>
27 mismatch(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _BinaryPredicate __pred) {
28 for (; __first1 != __last1; ++__first1, (void)++__first2)
29 if (!__pred(*__first1, *__first2))
31 return pair<_InputIterator1, _InputIterator2>(__first1, __first2);
34 template <class _InputIterator1, class _InputIterator2>
35 _LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY
36 _LIBCPP_CONSTEXPR_AFTER_CXX17 pair<_InputIterator1, _InputIterator2>
37 mismatch(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2) {
38 typedef typename iterator_traits<_InputIterator1>::value_type __v1;
39 typedef typename iterator_traits<_InputIterator2>::value_type __v2;
40 return _VSTD::mismatch(__first1, __last1, __first2, __equal_to<__v1, __v2>());
43 #if _LIBCPP_STD_VER > 11
44 template <class _InputIterator1, class _InputIterator2, class _BinaryPredicate>
45 _LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY
46 _LIBCPP_CONSTEXPR_AFTER_CXX17 pair<_InputIterator1, _InputIterator2>
47 mismatch(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2,
48 _BinaryPredicate __pred) {
49 for (; __first1 != __last1 && __first2 != __last2; ++__first1, (void)++__first2)
50 if (!__pred(*__first1, *__first2))
52 return pair<_InputIterator1, _InputIterator2>(__first1, __first2);
55 template <class _InputIterator1, class _InputIterator2>
56 _LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY
57 _LIBCPP_CONSTEXPR_AFTER_CXX17 pair<_InputIterator1, _InputIterator2>
58 mismatch(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2) {
59 typedef typename iterator_traits<_InputIterator1>::value_type __v1;
60 typedef typename iterator_traits<_InputIterator2>::value_type __v2;
61 return _VSTD::mismatch(__first1, __last1, __first2, __last2, __equal_to<__v1, __v2>());
65 _LIBCPP_END_NAMESPACE_STD
67 #endif // _LIBCPP___ALGORITHM_MISMATCH_H