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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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2
sprout/math/cos.hpp
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@ -21,7 +21,7 @@ namespace sprout {
inline SPROUT_CONSTEXPR T
cos_impl_1(T x2, std::size_t n, std::size_t last) {
return last - n == 1
? (n % 2 ? -1 : 1) * sprout::detail::pow_n(x2, n) / sprout::math::factorial<T>(2 * n)
? (n % 2 ? -1 : 1) * sprout::detail::pow_n(x2, n) / sprout::math::unchecked_factorial<T>(2 * n)
: sprout::math::detail::cos_impl_1(x2, n, n + (last - n) / 2)
+ sprout::math::detail::cos_impl_1(x2, n + (last - n) / 2, last)
;