mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-14 10:39:05 +00:00
71 lines
2.5 KiB
C++
71 lines
2.5 KiB
C++
#ifndef SPROUT_MATH_REMAINDER_HPP
|
|
#define SPROUT_MATH_REMAINDER_HPP
|
|
|
|
#include <limits>
|
|
#include <type_traits>
|
|
#include <stdexcept>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/math/detail/config.hpp>
|
|
#include <sprout/math/detail/float_compute.hpp>
|
|
#include <sprout/math/isnan.hpp>
|
|
#include <sprout/math/signbit.hpp>
|
|
#include <sprout/math/round.hpp>
|
|
#include <sprout/type_traits/enabler_if.hpp>
|
|
#include <sprout/type_traits/float_promote.hpp>
|
|
|
|
namespace sprout {
|
|
namespace math {
|
|
namespace detail {
|
|
template<typename T>
|
|
inline SPROUT_CONSTEXPR T
|
|
remainder_impl(T x, T y) {
|
|
return x - sprout::math::round(x / y) * y;
|
|
}
|
|
|
|
template<
|
|
typename FloatType,
|
|
typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
|
|
>
|
|
inline SPROUT_CONSTEXPR FloatType
|
|
remainder(FloatType x, FloatType y) {
|
|
return sprout::math::isnan(y)
|
|
? sprout::math::isnan(x)
|
|
? sprout::math::signbit(y) || sprout::math::signbit(x) ? -std::numeric_limits<FloatType>::quiet_NaN()
|
|
: std::numeric_limits<FloatType>::quiet_NaN()
|
|
: y
|
|
: sprout::math::isnan(x) ? x
|
|
: x == 0 && y != 0 ? x
|
|
: x == std::numeric_limits<FloatType>::infinity() || x == -std::numeric_limits<FloatType>::infinity() || y == 0
|
|
? std::numeric_limits<FloatType>::quiet_NaN()
|
|
: y == std::numeric_limits<FloatType>::infinity() || y == -std::numeric_limits<FloatType>::infinity() ? x
|
|
#if SPROUT_USE_BUILTIN_CMATH_FUNCTION
|
|
: std::remainder(x, y)
|
|
#else
|
|
: static_cast<FloatType>(sprout::math::detail::remainder_impl(
|
|
static_cast<typename sprout::math::detail::float_compute<FloatType>::type>(x),
|
|
static_cast<typename sprout::math::detail::float_compute<FloatType>::type>(y)
|
|
))
|
|
#endif
|
|
;
|
|
}
|
|
template<
|
|
typename ArithmeticType1,
|
|
typename ArithmeticType2,
|
|
typename sprout::enabler_if<
|
|
std::is_arithmetic<ArithmeticType1>::value && std::is_arithmetic<ArithmeticType2>::value
|
|
>::type = sprout::enabler
|
|
>
|
|
inline SPROUT_CONSTEXPR typename sprout::float_promote<ArithmeticType1, ArithmeticType2>::type
|
|
remainder(ArithmeticType1 x, ArithmeticType2 y) {
|
|
typedef typename sprout::float_promote<ArithmeticType1, ArithmeticType2>::type type;
|
|
return sprout::math::detail::remainder(static_cast<type>(x), static_cast<type>(y));
|
|
}
|
|
} // namespace detail
|
|
|
|
using NS_SPROUT_MATH_DETAIL::remainder;
|
|
} // namespace math
|
|
|
|
using sprout::math::remainder;
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_MATH_REMAINDER_HPP
|