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add sprout::cbrt, hypot, fmax, fmin, fdim

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fix sprout::pow case x==0
This commit is contained in:
bolero-MURAKAMI 2012-05-05 18:50:17 +09:00
parent feba220da4
commit 6ccd6e1cf4
10 changed files with 273 additions and 17 deletions
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67
sprout/math/abs.hpp
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@ -1,67 +0,0 @@
#ifndef SPROUT_MATH_ABS_HPP
#define SPROUT_MATH_ABS_HPP
#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 FloatType
abs(FloatType x) {
return x < 0 ? -x : x;
}
template<
typename FloatType,
typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR FloatType
fabs(FloatType x) {
return x < 0 ? -x : x;
}
template<
typename IntType,
typename sprout::enabler_if<std::is_integral<IntType>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR double
fabs(IntType x) {
return sprout::math::detail::fabs(static_cast<double>(x));
}
} // namespace detail
template<
typename FloatType,
typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR FloatType
abs(FloatType x) {
# if SPROUT_USE_BUILTIN_CMATH_FUNCTION
using std::abs;
# else
using sprout::math::detail::abs;
# endif
return abs(x);
}
# if SPROUT_USE_BUILTIN_CMATH_FUNCTION
using std::fabs;
# else
using sprout::math::detail::fabs;
# endif
} // namespace math
using sprout::math::abs;
using sprout::math::fabs;
} // namespace sprout
#endif // #ifndef SPROUT_MATH_ABS_HPP