forked from mirror/libcxx
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
58 lines
2.1 KiB
C++
58 lines
2.1 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <string>
|
|
|
|
// template<> struct char_traits<wchar_t>
|
|
|
|
// static int compare(const char_type* s1, const char_type* s2, size_t n);
|
|
// constexpr in C++17
|
|
|
|
#include <string>
|
|
#include <cassert>
|
|
|
|
#include "test_macros.h"
|
|
|
|
#if TEST_STD_VER > 14
|
|
constexpr bool test_constexpr()
|
|
{
|
|
return std::char_traits<wchar_t>::compare(L"123", L"223", 3) < 0
|
|
&& std::char_traits<wchar_t>::compare(L"223", L"123", 3) > 0
|
|
&& std::char_traits<wchar_t>::compare(L"123", L"123", 3) == 0;
|
|
}
|
|
#endif
|
|
|
|
int main()
|
|
{
|
|
assert(std::char_traits<wchar_t>::compare(L"", L"", 0) == 0);
|
|
assert(std::char_traits<wchar_t>::compare(NULL, NULL, 0) == 0);
|
|
|
|
assert(std::char_traits<wchar_t>::compare(L"1", L"1", 1) == 0);
|
|
assert(std::char_traits<wchar_t>::compare(L"1", L"2", 1) < 0);
|
|
assert(std::char_traits<wchar_t>::compare(L"2", L"1", 1) > 0);
|
|
|
|
assert(std::char_traits<wchar_t>::compare(L"12", L"12", 2) == 0);
|
|
assert(std::char_traits<wchar_t>::compare(L"12", L"13", 2) < 0);
|
|
assert(std::char_traits<wchar_t>::compare(L"12", L"22", 2) < 0);
|
|
assert(std::char_traits<wchar_t>::compare(L"13", L"12", 2) > 0);
|
|
assert(std::char_traits<wchar_t>::compare(L"22", L"12", 2) > 0);
|
|
|
|
assert(std::char_traits<wchar_t>::compare(L"123", L"123", 3) == 0);
|
|
assert(std::char_traits<wchar_t>::compare(L"123", L"223", 3) < 0);
|
|
assert(std::char_traits<wchar_t>::compare(L"123", L"133", 3) < 0);
|
|
assert(std::char_traits<wchar_t>::compare(L"123", L"124", 3) < 0);
|
|
assert(std::char_traits<wchar_t>::compare(L"223", L"123", 3) > 0);
|
|
assert(std::char_traits<wchar_t>::compare(L"133", L"123", 3) > 0);
|
|
assert(std::char_traits<wchar_t>::compare(L"124", L"123", 3) > 0);
|
|
|
|
#if TEST_STD_VER > 14
|
|
static_assert(test_constexpr(), "" );
|
|
#endif
|
|
}
|