llvm/libcxx
1
0
Fork 0
mirror of https://github.com/llvm-mirror/libcxx.git synced 2025-10-23 10:07:41 +08:00
Code Issues Packages Projects Releases Wiki Activity

More constexpr (re P0202) - equal and mismatch

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@322527 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow
2018-01-16 02:04:10 +00:00
parent 5af38a078e
commit 4cd596538b
5 changed files with 164 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
test/std/algorithms/alg.nonmodifying/mismatch/mismatch.pass.cpp
View File

@@ -11,8 +11,12 @@
// template<InputIterator Iter1, InputIterator Iter2>
// requires HasEqualTo<Iter1::value_type, Iter2::value_type>
// pair<Iter1, Iter2>
// constexpr pair<Iter1, Iter2> // constexpr after c++17
// mismatch(Iter1 first1, Iter1 last1, Iter2 first2);
//
// template<InputIterator Iter1, InputIterator Iter2Pred>
// constexpr pair<Iter1, Iter2> // constexpr after c++17
// mismatch(Iter1 first1, Iter1 last1, Iter2 first2, Iter2 last2); // C++14
#include <algorithm>
#include <cassert>
@@ -20,6 +24,40 @@
#include "test_macros.h"
#include "test_iterators.h"
#if TEST_STD_VER > 17
TEST_CONSTEXPR bool test_constexpr() {
int ia[] = {1, 3, 6, 7};
int ib[] = {1, 3};
int ic[] = {1, 3, 5, 7};
typedef input_iterator<int*> II;
typedef bidirectional_iterator<int*> BI;
auto p1 = std::mismatch(std::begin(ia), std::end(ia), std::begin(ic));
if (p1.first != ia+2 || p1.second != ic+2)
return false;
auto p2 = std::mismatch(std::begin(ia), std::end(ia), std::begin(ic), std::end(ic));
if (p2.first != ia+2 || p2.second != ic+2)
return false;
auto p3 = std::mismatch(std::begin(ib), std::end(ib), std::begin(ic));
if (p3.first != ib+2 || p3.second != ic+2)
return false;
auto p4 = std::mismatch(std::begin(ib), std::end(ib), std::begin(ic), std::end(ic));
if (p4.first != ib+2 || p4.second != ic+2)
return false;
auto p5 = std::mismatch(II(std::begin(ib)), II(std::end(ib)), II(std::begin(ic)));
if (p5.first != II(ib+2) || p5.second != II(ic+2))
return false;
auto p6 = std::mismatch(BI(std::begin(ib)), BI(std::end(ib)), BI(std::begin(ic)), BI(std::end(ic)));
if (p6.first != BI(ib+2) || p6.second != BI(ic+2))
return false;
return true;
}
#endif
int main()
{