llvm/libcxx
1
0
Fork 0
mirror of https://github.com/llvm-mirror/libcxx.git synced 2025-10-23 18:38:30 +08:00
Code Issues Packages Projects Releases Wiki Activity

More P0202 constexpr-ifying in <algorithm>. This commit handles replace/replace_if/replace_copy/replace_copy_if.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@322975 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow
2018-01-19 18:07:29 +00:00
parent ecd1909f5f
commit a75d61347e
5 changed files with 92 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
test/std/algorithms/alg.modifying.operations/alg.replace/replace_copy_if.pass.cpp
View File

@@ -14,16 +14,33 @@
// requires OutputIterator<OutIter, InIter::reference>
// && OutputIterator<OutIter, const T&>
// && CopyConstructible<Pred>
// OutIter
// constexpr OutIter // constexpr after C++17
// replace_copy_if(InIter first, InIter last, OutIter result, Pred pred, const T& new_value);
#include <algorithm>
#include <functional>
#include <cassert>
#include "test_macros.h"
#include "test_iterators.h"
bool equalToTwo(int v) { return v == 2; }
TEST_CONSTEXPR bool equalToTwo(int v) { return v == 2; }
#if TEST_STD_VER > 17
TEST_CONSTEXPR bool test_constexpr() {
int ia[] = {0, 1, 2, 3, 4};
int ib[] = {0, 0, 0, 0, 0, 0}; // one bigger
const int expected[] = {0, 1, 5, 3, 4};
auto it = std::replace_copy_if(std::begin(ia), std::end(ia), std::begin(ib), equalToTwo, 5);
return it == (std::begin(ib) + std::size(ia))
&& *it == 0 // don't overwrite the last value in the output array
&& std::equal(std::begin(ib), it, std::begin(expected), std::end(expected))
;
}
#endif
template <class InIter, class OutIter>
void
@@ -73,4 +90,8 @@ int main()
test<const int*, bidirectional_iterator<int*> >();
test<const int*, random_access_iterator<int*> >();
test<const int*, int*>();
#if TEST_STD_VER > 17
static_assert(test_constexpr());
#endif
}