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//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// bool isfinite(floating-point-type x); // constexpr since C++23
// We don't control the implementation on windows
// UNSUPPORTED: windows
#include <cassert>
#include <cmath>
#include <limits>
#include "test_macros.h"
#include "type_algorithms.h"
struct TestFloat {
template <class T>
static TEST_CONSTEXPR_CXX23 bool test() {
assert(std::isfinite(std::numeric_limits<T>::max()));
assert(!std::isfinite(std::numeric_limits<T>::infinity()));
assert(std::isfinite(std::numeric_limits<T>::min()));
assert(std::isfinite(std::numeric_limits<T>::denorm_min()));
assert(std::isfinite(std::numeric_limits<T>::lowest()));
assert(!std::isfinite(-std::numeric_limits<T>::infinity()));
assert(std::isfinite(T(0)));
assert(!std::isfinite(std::numeric_limits<T>::quiet_NaN()));
assert(!std::isfinite(std::numeric_limits<T>::signaling_NaN()));
return true;
}
template <class T>
TEST_CONSTEXPR_CXX23 void operator()() {
test<T>();
#if TEST_STD_VER >= 23
static_assert(test<T>());
#endif
}
};
struct TestInt {
template <class T>
static TEST_CONSTEXPR_CXX23 bool test() {
assert(std::isfinite(std::numeric_limits<T>::max()));
assert(std::isfinite(std::numeric_limits<T>::lowest()));
assert(std::isfinite(T(0)));
return true;
}
template <class T>
TEST_CONSTEXPR_CXX23 void operator()() {
test<T>();
#if TEST_STD_VER >= 23
static_assert(test<T>());
#endif
}
};
template <typename T>
struct ConvertibleTo {
operator T() const { return T(); }
};
int main(int, char**) {
types::for_each(types::floating_point_types(), TestFloat());
types::for_each(types::integral_types(), TestInt());
// Make sure we can call `std::isfinite` with convertible types
{
assert(std::isfinite(ConvertibleTo<float>()));
assert(std::isfinite(ConvertibleTo<double>()));
assert(std::isfinite(ConvertibleTo<long double>()));
}
return 0;
}
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