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28 lines
853 B
28 lines
853 B
4 months ago
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//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <chrono>
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// typedef duration<signed integral type of at least 64 bits, nano> nanoseconds;
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#include <chrono>
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#include <type_traits>
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#include <limits>
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int main()
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{
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typedef std::chrono::nanoseconds D;
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typedef D::rep Rep;
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typedef D::period Period;
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static_assert(std::is_signed<Rep>::value, "");
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static_assert(std::is_integral<Rep>::value, "");
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static_assert(std::numeric_limits<Rep>::digits >= 63, "");
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static_assert((std::is_same<Period, std::nano>::value), "");
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}
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