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Implement n3607: 'equal', 'mismatch', and 'is_permutation'

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@181548 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow
2013-05-09 21:14:23 +00:00
parent 5328cd307c
commit b30abdd07a
7 changed files with 982 additions and 0 deletions
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50
test/algorithms/alg.nonmodifying/alg.equal/equal_pred.pass.cpp
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@@ -21,6 +21,17 @@
#include "test_iterators.h"
#if _LIBCPP_STD_VER > 11
#define HAS_FOUR_ITERATOR_VERSION
#endif
int comparison_count = 0;
template <typename T>
bool counting_equals ( const T &a, const T &b ) {
++comparison_count;
return a == b;
}
int main()
{
int ia[] = {0, 1, 2, 3, 4, 5};
@@ -30,8 +41,47 @@ int main()
input_iterator<const int*>(ia+s),
input_iterator<const int*>(ia),
std::equal_to<int>()));
#ifdef HAS_FOUR_ITERATOR_VERSION
assert(std::equal(input_iterator<const int*>(ia),
input_iterator<const int*>(ia+s),
input_iterator<const int*>(ia),
input_iterator<const int*>(ia+s),
std::equal_to<int>()));
assert(std::equal(random_access_iterator<const int*>(ia),
random_access_iterator<const int*>(ia+s),
random_access_iterator<const int*>(ia),
random_access_iterator<const int*>(ia+s),
std::equal_to<int>()));
comparison_count = 0;
assert(!std::equal(input_iterator<const int*>(ia),
input_iterator<const int*>(ia+s),
input_iterator<const int*>(ia),
input_iterator<const int*>(ia+s-1),
counting_equals<int>));
assert(comparison_count > 0);
comparison_count = 0;
assert(!std::equal(random_access_iterator<const int*>(ia),
random_access_iterator<const int*>(ia+s),
random_access_iterator<const int*>(ia),
random_access_iterator<const int*>(ia+s-1),
counting_equals<int>));
assert(comparison_count == 0);
#endif
assert(!std::equal(input_iterator<const int*>(ia),
input_iterator<const int*>(ia+s),
input_iterator<const int*>(ib),
std::equal_to<int>()));
#ifdef HAS_FOUR_ITERATOR_VERSION
assert(!std::equal(input_iterator<const int*>(ia),
input_iterator<const int*>(ia+s),
input_iterator<const int*>(ib),
input_iterator<const int*>(ib+s),
std::equal_to<int>()));
assert(!std::equal(random_access_iterator<const int*>(ia),
random_access_iterator<const int*>(ia+s),
random_access_iterator<const int*>(ib),
random_access_iterator<const int*>(ib+s),
std::equal_to<int>()));
#endif
}