llvm-project/libcxx/test/std/time/nanoseconds.pass.cpp
Mark de Wever 7738db2c06 [NFC][libc++][test] Move time tests.
In the C++20 Standard time is no longer section under utilities, but
became its own chapter. This moves the time tests accordingly so their
location matches the current Standard.

Reviewed By: ldionne, #libc

Differential Revision: https://reviews.llvm.org/D122745
2022-04-12 17:49:48 +02:00

32 lines
933 B
C++

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <chrono>
// typedef duration<signed integral type of at least 64 bits, nano> nanoseconds;
#include <chrono>
#include <limits>
#include <ratio>
#include <type_traits>
#include "test_macros.h"
int main(int, char**)
{
typedef std::chrono::nanoseconds D;
typedef D::rep Rep;
typedef D::period Period;
static_assert(std::is_signed<Rep>::value, "");
static_assert(std::is_integral<Rep>::value, "");
static_assert(std::numeric_limits<Rep>::digits >= 63, "");
static_assert((std::is_same<Period, std::nano>::value), "");
return 0;
}