1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef _LIBCPP___ALGORITHM_TRANSFORM_H 10 #define _LIBCPP___ALGORITHM_TRANSFORM_H 11 12 #include <__config> 13 14 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 15 # pragma GCC system_header 16 #endif 17 18 _LIBCPP_BEGIN_NAMESPACE_STD 19 20 template <class _InputIterator, class _OutputIterator, class _UnaryOperation> 21 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 22 _OutputIterator 23 transform(_InputIterator __first, _InputIterator __last, _OutputIterator __result, _UnaryOperation __op) 24 { 25 for (; __first != __last; ++__first, (void) ++__result) 26 *__result = __op(*__first); 27 return __result; 28 } 29 30 template <class _InputIterator1, class _InputIterator2, class _OutputIterator, class _BinaryOperation> 31 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 32 _OutputIterator 33 transform(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, 34 _OutputIterator __result, _BinaryOperation __binary_op) 35 { 36 for (; __first1 != __last1; ++__first1, (void) ++__first2, ++__result) 37 *__result = __binary_op(*__first1, *__first2); 38 return __result; 39 } 40 41 _LIBCPP_END_NAMESPACE_STD 42 43 #endif // _LIBCPP___ALGORITHM_TRANSFORM_H 44