d94a770f7b
Depends on D145881 Implements parts of **P1614R2**: https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1614r2.html Implements `operator<=>` for `time_point` Reviewed By: #libc, Mordante Differential Revision: https://reviews.llvm.org/D146250
128 lines
3.8 KiB
C++
128 lines
3.8 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14, c++17
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// <chrono>
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// time_point
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// template<class Clock, class Duration1,
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// three_way_comparable_with<Duration1> Duration2>
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// constexpr auto operator<=>(const time_point<Clock, Duration1>& lhs,
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// const time_point<Clock, Duration2>& rhs);
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#include <cassert>
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#include <chrono>
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#include <ratio>
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#include "test_comparisons.h"
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constexpr void test_with_integral_ticks_value() {
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using Clock = std::chrono::system_clock;
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using Duration1 = std::chrono::milliseconds;
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using Duration2 = std::chrono::microseconds;
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using T1 = std::chrono::time_point<Clock, Duration1>;
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using T2 = std::chrono::time_point<Clock, Duration2>;
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{
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T1 t1(Duration1(3));
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T1 t2(Duration1(3));
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assert((t1 <=> t2) == std::strong_ordering::equal);
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assert(testOrder(t1, t2, std::strong_ordering::equal));
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}
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{
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T1 t1(Duration1(3));
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T1 t2(Duration1(4));
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assert((t1 <=> t2) == std::strong_ordering::less);
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assert(testOrder(t1, t2, std::strong_ordering::less));
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}
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{
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T1 t1(Duration1(3));
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T2 t2(Duration2(3000));
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assert((t1 <=> t2) == std::strong_ordering::equal);
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assert(testOrder(t1, t2, std::strong_ordering::equal));
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}
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{
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T1 t1(Duration1(3));
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T2 t2(Duration2(3001));
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assert((t1 <=> t2) == std::strong_ordering::less);
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assert(testOrder(t1, t2, std::strong_ordering::less));
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assert((t2 <=> t1) == std::strong_ordering::greater);
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assert(testOrder(t2, t1, std::strong_ordering::greater));
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}
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}
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constexpr void test_with_integral_ticks_value_and_custom_period_value() {
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using Clock = std::chrono::system_clock;
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using DInt30Hz = std::chrono::duration<int, std::ratio<1, 30>>;
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using DInt60Hz = std::chrono::duration<int, std::ratio<1, 60>>;
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using TIntR1 = std::chrono::time_point<Clock, DInt30Hz>;
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using TIntR2 = std::chrono::time_point<Clock, DInt60Hz>;
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{
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TIntR1 t1(DInt30Hz(10));
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TIntR2 t2(DInt60Hz(20));
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assert((t1 <=> t2) == std::strong_ordering::equal);
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assert(testOrder(t1, t2, std::strong_ordering::equal));
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}
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{
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TIntR1 t1(DInt30Hz(10));
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TIntR2 t2(DInt60Hz(21));
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assert((t1 <=> t2) == std::strong_ordering::less);
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assert(testOrder(t1, t2, std::strong_ordering::less));
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}
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{
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TIntR1 t1(DInt30Hz(11));
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TIntR2 t2(DInt60Hz(20));
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assert((t1 <=> t2) == std::strong_ordering::greater);
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assert(testOrder(t1, t2, std::strong_ordering::greater));
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}
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}
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constexpr void test_with_floating_point_ticks_value() {
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using Clock = std::chrono::system_clock;
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using DF30Hz = std::chrono::duration<double, std::ratio<1, 30>>;
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using DF60Hz = std::chrono::duration<double, std::ratio<1, 60>>;
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using F1 = std::chrono::time_point<Clock, DF30Hz>;
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using F2 = std::chrono::time_point<Clock, DF60Hz>;
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// No equality comparison test for floating point values.
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{
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F1 t1(DF30Hz(3.5));
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F2 t2(DF60Hz(7.1));
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assert((t1 <=> t2) == std::weak_ordering::less);
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assert(testOrder(t1, t2, std::weak_ordering::less));
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}
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{
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F1 t1(DF30Hz(3.6));
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F2 t2(DF60Hz(7.0));
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assert((t1 <=> t2) == std::weak_ordering::greater);
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assert(testOrder(t1, t2, std::weak_ordering::greater));
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}
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}
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constexpr bool test() {
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test_with_integral_ticks_value();
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test_with_integral_ticks_value_and_custom_period_value();
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test_with_floating_point_ticks_value();
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return true;
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}
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int main(int, char**) {
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assert(test());
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static_assert(test());
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return 0;
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}
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