mirror/Sprout
1
0
Fork 0
mirror of https://github.com/bolero-MURAKAMI/Sprout.git synced 2025-07-16 15:14:13 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

add math::copysign

Browse source 
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
Download patch file Download diff file Expand all files Collapse all files

5
sprout/math/atan.hpp
View file

@ -10,6 +10,7 @@
#include <sprout/math/detail/float_compute.hpp>
#include <sprout/math/constants.hpp>
#include <sprout/math/factorial.hpp>
#include <sprout/math/copysign.hpp>
#include <sprout/type_traits/enabler_if.hpp>
#include <sprout/type_traits/float_promote.hpp>
@ -42,12 +43,12 @@ namespace sprout {
>
inline SPROUT_CONSTEXPR FloatType
atan(FloatType x) {
return x == 0 ? FloatType(0)
: x == std::numeric_limits<FloatType>::infinity() ? sprout::math::half_pi<FloatType>()
return x == std::numeric_limits<FloatType>::infinity() ? sprout::math::half_pi<FloatType>()
: x == -std::numeric_limits<FloatType>::infinity() ? -sprout::math::half_pi<FloatType>()
#if SPROUT_USE_BUILTIN_CMATH_FUNCTION
: std::atan(x)
#else
: x == 0 ? sprout::math::copysign(FloatType(0), x)
: static_cast<FloatType>(
x < 0 ? -sprout::math::detail::atan_impl(static_cast<typename sprout::math::detail::float_compute<FloatType>::type>(-x))
: sprout::math::detail::atan_impl(static_cast<typename sprout::math::detail::float_compute<FloatType>::type>(x))