mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-12-27 21:45:42 +00:00
51 lines
1.8 KiB
C++
51 lines
1.8 KiB
C++
/*=============================================================================
|
|
Copyright (c) 2011-2019 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_FLOAT_SIGNIFICAND_HPP
|
|
#define SPROUT_MATH_FLOAT_SIGNIFICAND_HPP
|
|
|
|
#include <type_traits>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/limits.hpp>
|
|
#include <sprout/detail/pow.hpp>
|
|
#include <sprout/math/detail/config.hpp>
|
|
#include <sprout/math/isnan.hpp>
|
|
#include <sprout/math/float_exponent.hpp>
|
|
#include <sprout/type_traits/enabler_if.hpp>
|
|
|
|
namespace sprout {
|
|
namespace math {
|
|
//
|
|
// float_significand
|
|
//
|
|
template<
|
|
typename FloatType,
|
|
typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
|
|
>
|
|
inline SPROUT_CONSTEXPR FloatType
|
|
float_significand(FloatType x) {
|
|
return sprout::math::isnan(x) ? x
|
|
: x == sprout::numeric_limits<FloatType>::infinity() ? sprout::numeric_limits<FloatType>::infinity()
|
|
: x == -sprout::numeric_limits<FloatType>::infinity() ? -sprout::numeric_limits<FloatType>::infinity()
|
|
: x == 0 ? x
|
|
: x / sprout::detail::pow_n(FloatType(sprout::numeric_limits<FloatType>::radix), sprout::float_exponent(x))
|
|
;
|
|
}
|
|
template<
|
|
typename IntType,
|
|
typename sprout::enabler_if<std::is_integral<IntType>::value>::type = sprout::enabler
|
|
>
|
|
inline SPROUT_CONSTEXPR double
|
|
float_significand(IntType x) {
|
|
return sprout::math::float_significand(static_cast<double>(x));
|
|
}
|
|
} // namespace math
|
|
|
|
using sprout::math::float_significand;
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_MATH_FLOAT_SIGNIFICAND_HPP
|