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First part of P0202: Adding constexpr modifiers to functions in <algorithm> and <utility>. This commit is all the is_XXX algorithms.

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@322489 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow
2018-01-15 16:16:32 +00:00
parent cce11ce7c2
commit 8d0d82585a
13 changed files with 222 additions and 62 deletions
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21
test/std/algorithms/alg.nonmodifying/alg.is_permutation/is_permutation.pass.cpp
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@@ -10,7 +10,7 @@
// <algorithm>
// template<class ForwardIterator1, class ForwardIterator2>
// bool
// constexpr bool // constexpr after C++17
// is_permutation(ForwardIterator1 first1, ForwardIterator1 last1,
// ForwardIterator2 first2);
@@ -21,6 +21,21 @@
#include "test_macros.h"
#if TEST_STD_VER > 17
TEST_CONSTEXPR int test_constexpr() {
int ia[] = {0, 0, 0};
int ib[] = {1, 1, 0};
int ic[] = {1, 0, 1};
int id[] = {1};
return !std::is_permutation(std::begin(ia), std::end(ia), std::begin(ib))
&& !std::is_permutation(std::begin(ia), std::end(ia), std::begin(ib), std::end(ib))
&& std::is_permutation(std::begin(ib), std::end(ib), std::begin(ic))
&& std::is_permutation(std::begin(ib), std::end(ib), std::begin(ic), std::end(ic))
&& !std::is_permutation(std::begin(ic), std::end(ic), std::begin(id), std::end(id))
;
}
#endif
int main()
{
{
@@ -600,4 +615,8 @@ int main()
forward_iterator<const int*>(ib + sa)) == false);
#endif
}
#if TEST_STD_VER > 17
static_assert(test_constexpr());
#endif
}