7ec46bc422
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@185343 91177308-0d34-0410-b5e6-96231b3b80d8
49 lines
1.5 KiB
C++
49 lines
1.5 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.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <utility>
|
|
|
|
// template<class T, T... I>
|
|
// struct integer_sequence
|
|
// {
|
|
// typedef T type;
|
|
//
|
|
// static constexpr size_t size() noexcept;
|
|
// };
|
|
|
|
#include <utility>
|
|
#include <type_traits>
|
|
#include <cassert>
|
|
|
|
int main()
|
|
{
|
|
#if _LIBCPP_STD_VER > 11
|
|
|
|
// Make a few of sequences
|
|
using int3 = std::integer_sequence<int, 3, 2, 1>;
|
|
using size1 = std::integer_sequence<size_t, 7>;
|
|
using ushort2 = std::integer_sequence<unsigned short, 4, 6>;
|
|
using bool0 = std::integer_sequence<bool>;
|
|
|
|
// Make sure they're what we expect
|
|
static_assert ( std::is_same<int3::value_type, int>::value, "int3 type wrong" );
|
|
static_assert ( int3::size() == 3, "int3 size wrong" );
|
|
|
|
static_assert ( std::is_same<size1::value_type, size_t>::value, "size1 type wrong" );
|
|
static_assert ( size1::size() == 1, "size1 size wrong" );
|
|
|
|
static_assert ( std::is_same<ushort2::value_type, unsigned short>::value, "ushort2 type wrong" );
|
|
static_assert ( ushort2::size() == 2, "ushort2 size wrong" );
|
|
|
|
static_assert ( std::is_same<bool0::value_type, bool>::value, "bool0 type wrong" );
|
|
static_assert ( bool0::size() == 0, "bool0 size wrong" );
|
|
|
|
#endif // _LIBCPP_STD_VER > 11
|
|
}
|