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replace implementation <cmath> functions to Sprout.Math.Functions

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bolero-MURAKAMI 2012-05-09 10:15:19 +09:00
parent 6ccd6e1cf4
commit 6bb2d0fb87
21 changed files with 212 additions and 106 deletions
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42
sprout/math/abs.hpp Normal file
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#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;
}
} // 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);
}
} // namespace math
using sprout::math::abs;
} // namespace sprout
#endif // #ifndef SPROUT_MATH_ABS_HPP