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_AFTER_CXX17 |
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_AFTER_CXX17 |
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 | |