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More P0202 constexpr-ifying in <algorithm>. This commit handles 'transform'.

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llvm-svn: 322970
This commit is contained in:
Marshall Clow
2018-01-19 17:45:39 +00:00
parent aac0f8f399
commit 99894b61ba
3 changed files with 52 additions and 7 deletions
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8
libcxx/include/algorithm
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@@ -193,11 +193,11 @@ template <class ForwardIterator1, class ForwardIterator2>
iter_swap(ForwardIterator1 a, ForwardIterator2 b);
template <class InputIterator, class OutputIterator, class UnaryOperation>
OutputIterator
constexpr OutputIterator // constexpr in C++20
transform(InputIterator first, InputIterator last, OutputIterator result, UnaryOperation op);
template <class InputIterator1, class InputIterator2, class OutputIterator, class BinaryOperation>
OutputIterator
constexpr OutputIterator // constexpr in C++20
transform(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2,
OutputIterator result, BinaryOperation binary_op);
@@ -1946,7 +1946,7 @@ move_backward(_BidirectionalIterator1 __first, _BidirectionalIterator1 __last,
// transform
template <class _InputIterator, class _OutputIterator, class _UnaryOperation>
inline _LIBCPP_INLINE_VISIBILITY
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
transform(_InputIterator __first, _InputIterator __last, _OutputIterator __result, _UnaryOperation __op)
{
@@ -1956,7 +1956,7 @@ transform(_InputIterator __first, _InputIterator __last, _OutputIterator __resul
}
template <class _InputIterator1, class _InputIterator2, class _OutputIterator, class _BinaryOperation>
inline _LIBCPP_INLINE_VISIBILITY
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
transform(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2,
_OutputIterator __result, _BinaryOperation __binary_op)