mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-29 01:03:45 +00:00
57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
/*=============================================================================
|
|
Copyright (c) 2011-2017 Bolero MURAKAMI
|
|
https://github.com/bolero-MURAKAMI/Sprout
|
|
|
|
Distributed under 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)
|
|
=============================================================================*/
|
|
#ifndef SPROUT_MATH_ISNAN_HPP
|
|
#define SPROUT_MATH_ISNAN_HPP
|
|
|
|
#include <type_traits>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/math/detail/config.hpp>
|
|
#include <sprout/type_traits/enabler_if.hpp>
|
|
|
|
namespace sprout {
|
|
namespace math {
|
|
namespace detail {
|
|
#if SPROUT_USE_BUILTIN_CMATH_FUNCTION
|
|
template<typename FloatType>
|
|
inline SPROUT_CONSTEXPR bool
|
|
builtin_isnan(FloatType x) {
|
|
return __builtin_isnan(x);
|
|
}
|
|
#endif
|
|
} // namespace detail
|
|
//
|
|
// isnan
|
|
//
|
|
template<
|
|
typename FloatType,
|
|
typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
|
|
>
|
|
inline SPROUT_CONSTEXPR bool
|
|
isnan(FloatType x) {
|
|
return
|
|
#if SPROUT_USE_BUILTIN_CMATH_FUNCTION
|
|
sprout::math::detail::builtin_isnan(x)
|
|
#else
|
|
!(x == x)
|
|
#endif
|
|
;
|
|
}
|
|
template<
|
|
typename IntType,
|
|
typename sprout::enabler_if<std::is_integral<IntType>::value>::type = sprout::enabler
|
|
>
|
|
inline SPROUT_CONSTEXPR bool
|
|
isnan(IntType) {
|
|
return false;
|
|
}
|
|
} // namespace math
|
|
|
|
using sprout::math::isnan;
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_MATH_ISNAN_HPP
|