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Sprout/sprout/math/fmin.hpp
2012-06-23 13:22:50 +09:00

42 lines
1.3 KiB
C++

#ifndef SPROUT_MATH_FMIN_HPP
#define SPROUT_MATH_FMIN_HPP
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/math/detail/config.hpp>
#include <sprout/math/float_promote.hpp>
#include <sprout/type_traits/enabler_if.hpp>
namespace sprout {
namespace math {
namespace detail {
template<
typename FloatType,
typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR FloatType
fmin(FloatType x, FloatType y) {
return x > y ? y : x;
}
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::math::float_promote<ArithmeticType1, ArithmeticType2>::type
fmin(ArithmeticType1 x, ArithmeticType2 y) {
typedef typename sprout::math::float_promote<ArithmeticType1, ArithmeticType2>::type type;
return sprout::math::detail::fmin(static_cast<type>(x), static_cast<type>(y));
}
} // namespace detail
using NS_SPROUT_MATH_DETAIL::fmin;
} // namespace math
using sprout::math::fmin;
} // namespace sprout
#endif // #ifndef SPROUT_MATH_FMIN_HPP