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// (C) Copyright John Maddock 2025.
// 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 <boost/math/special_functions/ulp.hpp>
#define BOOST_TEST_MAIN
#include <boost/test/unit_test.hpp>
#include <boost/test/tools/floating_point_comparison.hpp>
#include <boost/multiprecision/cpp_dec_float.hpp>
template <class T>
void test()
{
//
// Really just test our error handling:
//
BOOST_MATH_IF_CONSTEXPR(std::numeric_limits<T>::has_quiet_NaN)
{
BOOST_CHECK_THROW(boost::math::ulp(std::numeric_limits<T>::quiet_NaN()), std::domain_error);
}
BOOST_MATH_IF_CONSTEXPR(std::numeric_limits<T>::has_infinity)
{
BOOST_CHECK_THROW(boost::math::ulp(std::numeric_limits<T>::infinity()), std::overflow_error);
}
BOOST_CHECK_THROW(boost::math::ulp(boost::math::tools::max_value<T>()), std::overflow_error);
BOOST_CHECK(boost::math::ulp(static_cast<T>(0)) != 0);
}
BOOST_AUTO_TEST_CASE( test_main )
{
test<float>();
test<double>();
#ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
test<long double>();
#endif
test<boost::multiprecision::cpp_dec_float_50>();
}
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