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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// SPDX-FileCopyrightText: Copyright (c) 2023 NVIDIA CORPORATION & AFFILIATES.
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCUDACXX___ALGORITHM_EQUAL_H
#define _LIBCUDACXX___ALGORITHM_EQUAL_H
#include <cuda/std/detail/__config>
#if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
# pragma GCC system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_CLANG)
# pragma clang system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_MSVC)
# pragma system_header
#endif // no system header
#include <cuda/std/__algorithm/comp.h>
#include <cuda/std/__iterator/distance.h>
#include <cuda/std/__iterator/iterator_traits.h>
#include <cuda/std/__type_traits/add_lvalue_reference.h>
#include <cuda/std/__cccl/prologue.h>
_LIBCUDACXX_BEGIN_NAMESPACE_STD
_CCCL_EXEC_CHECK_DISABLE
template <class _InputIterator1, class _InputIterator2, class _BinaryPredicate>
[[nodiscard]] _CCCL_API constexpr bool
equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _BinaryPredicate __pred)
{
for (; __first1 != __last1; ++__first1, (void) ++__first2)
{
if (!__pred(*__first1, *__first2))
{
return false;
}
}
return true;
}
template <class _InputIterator1, class _InputIterator2>
[[nodiscard]] _CCCL_API constexpr bool equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2)
{
return _CUDA_VSTD::equal(__first1, __last1, __first2, __equal_to{});
}
_CCCL_EXEC_CHECK_DISABLE
template <class _BinaryPredicate, class _InputIterator1, class _InputIterator2>
[[nodiscard]] _CCCL_API constexpr bool __equal(
_InputIterator1 __first1,
_InputIterator1 __last1,
_InputIterator2 __first2,
_InputIterator2 __last2,
_BinaryPredicate __pred,
input_iterator_tag,
input_iterator_tag)
{
for (; __first1 != __last1 && __first2 != __last2; ++__first1, (void) ++__first2)
{
if (!__pred(*__first1, *__first2))
{
return false;
}
}
return __first1 == __last1 && __first2 == __last2;
}
template <class _BinaryPredicate, class _RandomAccessIterator1, class _RandomAccessIterator2>
[[nodiscard]] _CCCL_API constexpr bool __equal(
_RandomAccessIterator1 __first1,
_RandomAccessIterator1 __last1,
_RandomAccessIterator2 __first2,
_RandomAccessIterator2 __last2,
_BinaryPredicate __pred,
random_access_iterator_tag,
random_access_iterator_tag)
{
if (__last1 - __first1 != __last2 - __first2)
{
return false;
}
return _CUDA_VSTD::equal<_RandomAccessIterator1, _RandomAccessIterator2, add_lvalue_reference_t<_BinaryPredicate>>(
__first1, __last1, __first2, __pred);
}
template <class _InputIterator1, class _InputIterator2, class _BinaryPredicate>
[[nodiscard]] _CCCL_API constexpr bool
equal(_InputIterator1 __first1,
_InputIterator1 __last1,
_InputIterator2 __first2,
_InputIterator2 __last2,
_BinaryPredicate __pred)
{
return _CUDA_VSTD::__equal<add_lvalue_reference_t<_BinaryPredicate>>(
__first1,
__last1,
__first2,
__last2,
__pred,
typename iterator_traits<_InputIterator1>::iterator_category(),
typename iterator_traits<_InputIterator2>::iterator_category());
}
template <class _InputIterator1, class _InputIterator2>
[[nodiscard]] _CCCL_API constexpr bool
equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2)
{
return _CUDA_VSTD::__equal(
__first1,
__last1,
__first2,
__last2,
__equal_to{},
typename iterator_traits<_InputIterator1>::iterator_category(),
typename iterator_traits<_InputIterator2>::iterator_category());
}
_LIBCUDACXX_END_NAMESPACE_STD
#include <cuda/std/__cccl/epilogue.h>
#endif // _LIBCUDACXX___ALGORITHM_EQUAL_H
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