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52bff450dd
This starts implementing P0533 Reviewed By: Mordante, #libc Spies: libcxx-commits Differential Revision: https://reviews.llvm.org/D140277
71 lines
1.9 KiB
C++
71 lines
1.9 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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// bool isfinite(floating-point-type x); // constexpr since C++23
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// We don't control the implementation on windows
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// UNSUPPORTED: windows
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#include <cassert>
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#include <cmath>
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#include <limits>
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#include "test_macros.h"
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#include "type_algorithms.h"
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struct TestFloat {
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template <class T>
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static TEST_CONSTEXPR_CXX23 bool test() {
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assert(!std::isnan(std::numeric_limits<T>::max()));
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assert(!std::isnan(std::numeric_limits<T>::infinity()));
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assert(!std::isnan(std::numeric_limits<T>::min()));
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assert(!std::isnan(std::numeric_limits<T>::denorm_min()));
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assert(!std::isnan(std::numeric_limits<T>::lowest()));
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assert(!std::isnan(-std::numeric_limits<T>::infinity()));
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assert(!std::isnan(T(0)));
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assert(std::isnan(std::numeric_limits<T>::quiet_NaN()));
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assert(std::isnan(std::numeric_limits<T>::signaling_NaN()));
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return true;
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}
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template <class T>
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TEST_CONSTEXPR_CXX23 void operator()() {
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test<T>();
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#if TEST_STD_VER >= 23
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static_assert(test<T>());
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#endif
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}
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};
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struct TestInt {
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template <class T>
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static TEST_CONSTEXPR_CXX23 bool test() {
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assert(!std::isnan(std::numeric_limits<T>::max()));
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assert(!std::isnan(std::numeric_limits<T>::lowest()));
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assert(!std::isnan(T(0)));
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return true;
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}
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template <class T>
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TEST_CONSTEXPR_CXX23 void operator()() {
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test<T>();
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#if TEST_STD_VER >= 23
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static_assert(test<T>());
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#endif
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}
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};
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int main(int, char**) {
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meta::for_each(meta::floating_point_types(), TestFloat());
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meta::for_each(meta::integral_types(), TestInt());
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return 0;
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}
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