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_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator
transform(_InputIterator __first,_InputIterator __last,_OutputIterator __result,_UnaryOperation __op)22 transform(_InputIterator __first, _InputIterator __last, _OutputIterator __result, _UnaryOperation __op) {
23 for (; __first != __last; ++__first, (void)++__result)
24 *__result = __op(*__first);
25 return __result;
26 }
27
28 template <class _InputIterator1, class _InputIterator2, class _OutputIterator, class _BinaryOperation>
transform(_InputIterator1 __first1,_InputIterator1 __last1,_InputIterator2 __first2,_OutputIterator __result,_BinaryOperation __binary_op)29 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator transform(
30 _InputIterator1 __first1,
31 _InputIterator1 __last1,
32 _InputIterator2 __first2,
33 _OutputIterator __result,
34 _BinaryOperation __binary_op) {
35 for (; __first1 != __last1; ++__first1, (void)++__first2, ++__result)
36 *__result = __binary_op(*__first1, *__first2);
37 return __result;
38 }
39
40 _LIBCPP_END_NAMESPACE_STD
41
42 #endif // _LIBCPP___ALGORITHM_TRANSFORM_H
43