xref: /llvm-project/libcxx/include/__algorithm/transform.h (revision 9783f28cbb155e4a8d49c12e1c60ce14dcfaf0c7)

//===----------------------------------------------------------------------===//
//
// 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___ALGORITHM_TRANSFORM_H
#define _LIBCPP___ALGORITHM_TRANSFORM_H

#include <__config>

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#  pragma GCC system_header
#endif

_LIBCPP_BEGIN_NAMESPACE_STD

template <class _InputIterator, class _OutputIterator, class _UnaryOperation>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator
transform(_InputIterator __first, _InputIterator __last, _OutputIterator __result, _UnaryOperation __op) {
  for (; __first != __last; ++__first, (void)++__result)
    *__result = __op(*__first);
  return __result;
}

template <class _InputIterator1, class _InputIterator2, class _OutputIterator, class _BinaryOperation>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator transform(
    _InputIterator1 __first1,
    _InputIterator1 __last1,
    _InputIterator2 __first2,
    _OutputIterator __result,
    _BinaryOperation __binary_op) {
  for (; __first1 != __last1; ++__first1, (void)++__first2, ++__result)
    *__result = __binary_op(*__first1, *__first2);
  return __result;
}

_LIBCPP_END_NAMESPACE_STD

#endif // _LIBCPP___ALGORITHM_TRANSFORM_H