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add math::lgamma

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This commit is contained in:
bolero-MURAKAMI 2013-04-23 19:03:03 +09:00
parent a55c430f09
commit 5f40808f75
58 changed files with 323 additions and 116 deletions
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6
sprout/math/logb.hpp
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@ -80,7 +80,7 @@ namespace sprout {
inline SPROUT_CONSTEXPR T
logb_impl(T x, T exp) {
return sprout::math::detail::logb_impl_1(
x, sprout::detail::pow_n(T(std::numeric_limits<T>::radix), sprout::math::itrunc<std::intmax_t>(exp)), exp
x, sprout::detail::pow_n(T(std::numeric_limits<T>::radix), sprout::itrunc<std::intmax_t>(exp)), exp
);
}
@ -93,8 +93,8 @@ namespace sprout {
return x == 0 ? -std::numeric_limits<FloatType>::infinity()
: x == std::numeric_limits<FloatType>::infinity() || x == -std::numeric_limits<FloatType>::infinity()
? std::numeric_limits<FloatType>::infinity()
: x < 0 ? sprout::math::detail::logb_impl(-x, sprout::math::trunc(sprout::math::log_a(FloatType(std::numeric_limits<FloatType>::radix), -x)))
: sprout::math::detail::logb_impl(x, sprout::math::trunc(sprout::math::log_a(FloatType(std::numeric_limits<FloatType>::radix), x)))
: x < 0 ? sprout::math::detail::logb_impl(-x, sprout::trunc(sprout::log_a(FloatType(std::numeric_limits<FloatType>::radix), -x)))
: sprout::math::detail::logb_impl(x, sprout::trunc(sprout::log_a(FloatType(std::numeric_limits<FloatType>::radix), x)))
;
}