mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-14 10:39:05 +00:00
64 lines
2.3 KiB
C++
64 lines
2.3 KiB
C++
#ifndef SPROUT_MATH_QUOTIENT_HPP
|
|
#define SPROUT_MATH_QUOTIENT_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/iround.hpp>
|
|
#include <sprout/type_traits/enabler_if.hpp>
|
|
#include <sprout/type_traits/float_promote.hpp>
|
|
|
|
namespace sprout {
|
|
namespace math {
|
|
namespace detail {
|
|
template<typename R, typename T>
|
|
inline SPROUT_CONSTEXPR T
|
|
quotient_impl(T x, T y) {
|
|
return sprout::math::iround<R>(x / y);
|
|
}
|
|
|
|
template<
|
|
typename R = int,
|
|
typename FloatType,
|
|
typename sprout::enabler_if<std::is_floating_point<FloatType>::value && std::is_integral<R>::value>::type = sprout::enabler
|
|
>
|
|
inline SPROUT_CONSTEXPR R
|
|
quotient(FloatType x, FloatType y) {
|
|
return sprout::math::isnan(y) || sprout::math::isnan(x) ? R(0)
|
|
: x == 0 && y != 0 ? R(0)
|
|
: x == std::numeric_limits<FloatType>::infinity() || x == -std::numeric_limits<FloatType>::infinity() || y == 0
|
|
? R(0)
|
|
: y == std::numeric_limits<FloatType>::infinity() || y == -std::numeric_limits<FloatType>::infinity() ? R(0)
|
|
: static_cast<FloatType>(sprout::math::detail::quotient_impl<R>(
|
|
static_cast<typename sprout::math::detail::float_compute<FloatType>::type>(x),
|
|
static_cast<typename sprout::math::detail::float_compute<FloatType>::type>(y)
|
|
))
|
|
;
|
|
}
|
|
template<
|
|
typename R = int,
|
|
typename ArithmeticType1,
|
|
typename ArithmeticType2,
|
|
typename sprout::enabler_if<
|
|
std::is_arithmetic<ArithmeticType1>::value && std::is_arithmetic<ArithmeticType2>::value && std::is_integral<R>::value
|
|
>::type = sprout::enabler
|
|
>
|
|
inline SPROUT_CONSTEXPR R
|
|
quotient(ArithmeticType1 x, ArithmeticType2 y) {
|
|
typedef typename sprout::float_promote<ArithmeticType1, ArithmeticType2>::type type;
|
|
return sprout::math::detail::quotient(static_cast<type>(x), static_cast<type>(y));
|
|
}
|
|
} // namespace detail
|
|
|
|
using sprout::math::detail::quotient;
|
|
} // namespace math
|
|
|
|
using sprout::math::quotient;
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_MATH_QUOTIENT_HPP
|