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1 // -*- C++ -*-
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2 //===----------------------------------------------------------------------===//
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3 //
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4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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5 // See https://llvm.org/LICENSE.txt for license information.
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6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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7 //
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8 //===----------------------------------------------------------------------===//
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9
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10 #ifndef _LIBCPP___ALGORITHM_MISMATCH_H
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11 #define _LIBCPP___ALGORITHM_MISMATCH_H
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12
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13 #include <__config>
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14 #include <__iterator/iterator_traits.h>
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15 #include <utility>
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16
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17 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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18 #pragma GCC system_header
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19 #endif
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20
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21 _LIBCPP_PUSH_MACROS
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22 #include <__undef_macros>
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23
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24 _LIBCPP_BEGIN_NAMESPACE_STD
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25
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26 template <class _InputIterator1, class _InputIterator2, class _BinaryPredicate>
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27 _LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY
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28 _LIBCPP_CONSTEXPR_AFTER_CXX17 pair<_InputIterator1, _InputIterator2>
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29 mismatch(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _BinaryPredicate __pred) {
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30 for (; __first1 != __last1; ++__first1, (void)++__first2)
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31 if (!__pred(*__first1, *__first2))
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32 break;
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33 return pair<_InputIterator1, _InputIterator2>(__first1, __first2);
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34 }
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35
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36 template <class _InputIterator1, class _InputIterator2>
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37 _LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY
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38 _LIBCPP_CONSTEXPR_AFTER_CXX17 pair<_InputIterator1, _InputIterator2>
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39 mismatch(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2) {
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40 typedef typename iterator_traits<_InputIterator1>::value_type __v1;
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41 typedef typename iterator_traits<_InputIterator2>::value_type __v2;
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42 return _VSTD::mismatch(__first1, __last1, __first2, __equal_to<__v1, __v2>());
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43 }
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44
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45 #if _LIBCPP_STD_VER > 11
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46 template <class _InputIterator1, class _InputIterator2, class _BinaryPredicate>
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47 _LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY
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48 _LIBCPP_CONSTEXPR_AFTER_CXX17 pair<_InputIterator1, _InputIterator2>
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49 mismatch(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2,
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50 _BinaryPredicate __pred) {
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51 for (; __first1 != __last1 && __first2 != __last2; ++__first1, (void)++__first2)
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52 if (!__pred(*__first1, *__first2))
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53 break;
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54 return pair<_InputIterator1, _InputIterator2>(__first1, __first2);
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55 }
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56
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57 template <class _InputIterator1, class _InputIterator2>
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58 _LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY
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59 _LIBCPP_CONSTEXPR_AFTER_CXX17 pair<_InputIterator1, _InputIterator2>
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60 mismatch(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2) {
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61 typedef typename iterator_traits<_InputIterator1>::value_type __v1;
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62 typedef typename iterator_traits<_InputIterator2>::value_type __v2;
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63 return _VSTD::mismatch(__first1, __last1, __first2, __last2, __equal_to<__v1, __v2>());
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64 }
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65 #endif
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66
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67 _LIBCPP_END_NAMESPACE_STD
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68
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69 _LIBCPP_POP_MACROS
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70
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71 #endif // _LIBCPP___ALGORITHM_MISMATCH_H
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