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Sprout/sprout/math/compare.hpp
2012-07-07 14:58:46 +09:00

29 lines
715 B
C++

#ifndef SPROUT_MATH_COMPARE_HPP
#define SPROUT_MATH_COMPARE_HPP
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/math/equal_to.hpp>
#include <sprout/math/less.hpp>
#include <sprout/type_traits/enabler_if.hpp>
namespace sprout {
namespace math {
//
// compare
//
template<
typename T, typename U,
typename sprout::enabler_if<std::is_arithmetic<T>::value && std::is_arithmetic<U>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR int
compare(T x, U y) {
return sprout::math::equal_to(x, y) ? 0
: sprout::math::less(x, y) ? -1
: 1
;
}
} // namespace math
} // namespace sprout
#endif // #ifndef SPROUT_MATH_COMPARE_HPP