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// (C) Copyright Matt Borland 2022.
// Use, modification and distribution are subject to the
// Boost Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
#include <type_traits>
#include <boost/math/ccmath/signbit.hpp>
#if !defined(BOOST_MATH_NO_CONSTEXPR_DETECTION) && !defined(BOOST_MATH_USING_BUILTIN_CONSTANT_P)
template <typename T>
void test()
{
// Edge cases
#ifdef BOOST_MATH_BIT_CAST
static_assert(boost::math::ccmath::signbit(T(0)) == false);
static_assert(boost::math::ccmath::signbit(T(0)*-1) == true);
static_assert(boost::math::ccmath::signbit(std::numeric_limits<T>::quiet_NaN()) == false);
static_assert(boost::math::ccmath::signbit(-std::numeric_limits<T>::quiet_NaN()) == true);
static_assert(boost::math::ccmath::signbit(std::numeric_limits<T>::signaling_NaN()) == false);
static_assert(boost::math::ccmath::signbit(-std::numeric_limits<T>::signaling_NaN()) == true);
#endif
// Positive numbers
static_assert(boost::math::ccmath::signbit(std::numeric_limits<T>::infinity()) == false);
static_assert(boost::math::ccmath::signbit(T(1)) == false);
// Negative numbers
static_assert(boost::math::ccmath::signbit(-std::numeric_limits<T>::infinity()) == true);
static_assert(boost::math::ccmath::signbit(T(-1)) == true);
}
int main(void)
{
test<float>();
test<double>();
#ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
test<long double>();
#endif
return 0;
}
#else
int main(void)
{
return 0;
}
#endif
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