diff options
Diffstat (limited to 'contrib/llvm-project/libcxx/include/__numeric/inner_product.h')
-rw-r--r-- | contrib/llvm-project/libcxx/include/__numeric/inner_product.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/contrib/llvm-project/libcxx/include/__numeric/inner_product.h b/contrib/llvm-project/libcxx/include/__numeric/inner_product.h new file mode 100644 index 000000000000..004acdde6a0c --- /dev/null +++ b/contrib/llvm-project/libcxx/include/__numeric/inner_product.h @@ -0,0 +1,53 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// 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 +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___NUMERIC_INNER_PRODUCT_H +#define _LIBCPP___NUMERIC_INNER_PRODUCT_H + +#include <__config> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +#pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +template <class _InputIterator1, class _InputIterator2, class _Tp> +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 +_Tp +inner_product(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _Tp __init) +{ + for (; __first1 != __last1; ++__first1, (void) ++__first2) +#if _LIBCPP_STD_VER > 17 + __init = _VSTD::move(__init) + *__first1 * *__first2; +#else + __init = __init + *__first1 * *__first2; +#endif + return __init; +} + +template <class _InputIterator1, class _InputIterator2, class _Tp, class _BinaryOperation1, class _BinaryOperation2> +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 +_Tp +inner_product(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, + _Tp __init, _BinaryOperation1 __binary_op1, _BinaryOperation2 __binary_op2) +{ + for (; __first1 != __last1; ++__first1, (void) ++__first2) +#if _LIBCPP_STD_VER > 17 + __init = __binary_op1(_VSTD::move(__init), __binary_op2(*__first1, *__first2)); +#else + __init = __binary_op1(__init, __binary_op2(*__first1, *__first2)); +#endif + return __init; +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___NUMERIC_INNER_PRODUCT_H |