2014-07-30 05:05:55 +00:00
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/*=============================================================================
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2015-01-10 10:13:57 +00:00
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Copyright (c) 2011-2015 Bolero MURAKAMI
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2014-07-30 05:05:55 +00:00
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https://github.com/bolero-MURAKAMI/Sprout
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#ifndef SPROUT_MATH_ISUNORDERED_HPP
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#define SPROUT_MATH_ISUNORDERED_HPP
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#include <type_traits>
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#include <sprout/config.hpp>
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#include <sprout/math/detail/config.hpp>
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#include <sprout/math/isnan.hpp>
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#include <sprout/type_traits/float_promote.hpp>
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#include <sprout/type_traits/enabler_if.hpp>
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namespace sprout {
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namespace math {
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namespace detail {
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#if SPROUT_USE_BUILTIN_CMATH_FUNCTION
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template<typename FloatType>
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inline SPROUT_CONSTEXPR bool
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builtin_isunordered(FloatType x, FloatType y) {
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return __builtin_isunordered(x, y);
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}
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#endif
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} // namespace detail
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//
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// isunordered
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//
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template<
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typename FloatType,
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typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
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>
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inline SPROUT_CONSTEXPR bool
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isunordered(FloatType x, FloatType y) {
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return
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#if SPROUT_USE_BUILTIN_CMATH_FUNCTION
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sprout::math::detail::builtin_isunordered(x, y)
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#else
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sprout::math::isnan(x) || sprout::math::isnan(y)
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#endif
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;
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}
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template<
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typename ArithmeticType1,
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typename ArithmeticType2,
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typename sprout::enabler_if<
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std::is_arithmetic<ArithmeticType1>::value && std::is_arithmetic<ArithmeticType2>::value
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>::type = sprout::enabler
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>
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inline SPROUT_CONSTEXPR bool
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isunordered(ArithmeticType1 x, ArithmeticType2 y) {
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typedef typename sprout::float_promote<ArithmeticType1, ArithmeticType2>::type type;
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return sprout::math::isunordered(static_cast<type>(x), static_cast<type>(y));
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}
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} // namespace math
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using sprout::math::isunordered;
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} // namespace sprout
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#endif // #ifndef SPROUT_MATH_ISUNORDERED_HPP
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