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35 lines
1.1 KiB
C++
35 lines
1.1 KiB
C++
// (C) Copyright Matt Borland 2021.
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// Use, modification and distribution are subject to the
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// Boost Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#include <cmath>
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#include <cfloat>
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#include <limits>
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#include <boost/math/ccmath/isnan.hpp>
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#include <boost/core/lightweight_test.hpp>
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template <typename T>
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void test()
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{
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constexpr bool test_val = boost::math::ccmath::isnan(T(0));
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static_assert(!test_val, "Not constexpr");
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static_assert(boost::math::ccmath::isnan(std::numeric_limits<T>::quiet_NaN()), "Quiet NAN failed");
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static_assert(boost::math::ccmath::isnan(std::numeric_limits<T>::signaling_NaN()), "Signaling NAN failed");
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static_assert(!boost::math::ccmath::isnan(std::numeric_limits<T>::infinity()), "Infininty failed");
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static_assert(!boost::math::ccmath::isnan(T(0)), "Real 0 failed");
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}
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int main()
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{
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test<float>();
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test<double>();
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#ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
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test<long double>();
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#endif
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return boost::report_errors();
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}
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