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add math::copysign

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fix hyperbolic and exponental functions: for special values
This commit is contained in:
bolero-MURAKAMI 2013-04-24 22:48:36 +09:00
parent a27c83e939
commit 32c3ba02d4
50 changed files with 540 additions and 216 deletions
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6
sprout/math/lgamma.hpp
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@ -20,7 +20,7 @@ namespace sprout {
template<typename T>
inline SPROUT_CONSTEXPR T
lgamma_impl_3(T x, T y) {
return x < 0 ? sprout::log(sprout::math::pi<T>() / sprout::math::fabs(x * sprout::math::sin(x * sprout::math::pi<T>()))) - y
return x < 0 ? sprout::math::log(sprout::math::pi<T>() / sprout::math::fabs(x * sprout::math::sin(x * sprout::math::pi<T>()))) - y
: y
;
}
@ -31,7 +31,7 @@ namespace sprout {
x,
(((((-0.00163312359200500807 * t + 8.3644533703385956e-4) * t + -5.9518947575728181e-4) * t
+ 7.9365057505415415e-4) * t + -0.00277777777735463043) * t + 0.08333333333333309869) * v + 0.91893853320467274178
+ ((w - T(0.5)) * sprout::log(w) - w)
+ ((w - T(0.5)) * sprout::math::log(w) - w)
);
}
template<typename T>
@ -145,7 +145,7 @@ namespace sprout {
lgamma_impl_2_a(T x, T w, int k) {
return sprout::math::detail::lgamma_impl_3(
x,
-sprout::log(
-sprout::math::log(
k == 0 ? ((((((((((
9.967270908702825e-5 * w + -1.9831672170162227e-4) * w
+ -0.00117085315349625822) * w + 0.00722012810948319552) * w + -0.0096221300936780297) * w