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add math: reminder, rem_quo(same as remquo)

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bolero-MURAKAMI 2013-02-10 17:12:31 +09:00
parent 434aa8d3c5
commit 887dba1849
9 changed files with 189 additions and 35 deletions
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49
sprout/math/quotient.hpp Normal file
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#ifndef SPROUT_MATH_QUOTIENT_HPP
#define SPROUT_MATH_QUOTIENT_HPP
#include <cstdint>
#include <type_traits>
#include <stdexcept>
#include <sprout/config.hpp>
#include <sprout/math/detail/config.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 = 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 y == 0 ? throw std::domain_error("quotient: divide by zero.")
: sprout::math::iround<R>(x / 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