Sprout/sprout/math/isinf.hpp
2012-05-10 13:34:49 +09:00

37 lines
903 B
C++

#ifndef SPROUT_MATH_ISINF_HPP
#define SPROUT_MATH_ISINF_HPP
#include <limits>
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/utility/enabler_if.hpp>
#if SPROUT_USE_BUILTIN_CMATH_FUNCTION
# include <cmath>
#endif
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 int
isinf(FloatType x) {
return x == std::numeric_limits<FloatType>::infinity()
|| x == -std::numeric_limits<FloatType>::infinity()
;
}
} // namespace detail
# if SPROUT_USE_BUILTIN_CMATH_FUNCTION
using std::isinf;
# else
using sprout::math::detail::isinf;
# endif
} // namespace math
using sprout::math::isinf;
} // namespace sprout
#endif // #ifndef SPROUT_MATH_ISINF_HPP