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fix math functions

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This commit is contained in:
bolero-MURAKAMI 2013-05-06 00:22:08 +09:00
parent fccb16687b
commit 7794e56192
27 changed files with 342 additions and 102 deletions
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20
sprout/math/log_a.hpp
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@ -4,24 +4,34 @@
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/math/detail/config.hpp>
#include <sprout/math/log.hpp>
#include <sprout/math/detail/float_compute.hpp>
#include <sprout/math/constants.hpp>
#include <sprout/math/log.hpp>
#include <sprout/type_traits/enabler_if.hpp>
#include <sprout/type_traits/float_promote.hpp>
namespace sprout {
namespace math {
namespace detail {
template<typename T>
inline SPROUT_CONSTEXPR T
log_a_impl(T x, T y) {
return x == 2 ? sprout::math::log(y) / sprout::math::ln_two<T>()
: x == 10 ? sprout::math::log(y) / sprout::math::ln_ten<T>()
: sprout::math::log(y) / sprout::math::log(x)
;
}
template<
typename FloatType,
typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR FloatType
log_a(FloatType x, FloatType y) {
return x == 2 ? sprout::math::log(y) / sprout::math::ln_two<FloatType>()
: x == 10 ? sprout::math::log(y) / sprout::math::ln_ten<FloatType>()
: sprout::math::log(y) / sprout::math::log(x)
;
return static_cast<FloatType>(sprout::math::detail::log_a_impl(
static_cast<typename sprout::math::detail::float_compute<FloatType>::type>(x),
static_cast<typename sprout::math::detail::float_compute<FloatType>::type>(y)
));
}
template<