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fix math functions

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This commit is contained in:
bolero-MURAKAMI 2013-04-29 10:56:46 +09:00
parent 2e2b6c96ab
commit ffb876c930
23 changed files with 85 additions and 37 deletions
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6
sprout/math/atanh.hpp
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@ -6,6 +6,7 @@
#include <sprout/config.hpp>
#include <sprout/math/detail/config.hpp>
#include <sprout/math/detail/float_compute.hpp>
#include <sprout/math/isnan.hpp>
#include <sprout/math/log.hpp>
#include <sprout/math/fabs.hpp>
#include <sprout/type_traits/enabler_if.hpp>
@ -25,9 +26,10 @@ namespace sprout {
>
inline SPROUT_CONSTEXPR FloatType
atanh(FloatType x) {
return x == 1 ? std::numeric_limits<FloatType>::infinity()
return sprout::math::isnan(x) ? x
: x == 1 ? std::numeric_limits<FloatType>::infinity()
: x == -1 ? -std::numeric_limits<FloatType>::infinity()
: sprout::math::fabs(x) > 1 ? std::numeric_limits<FloatType>::quiet_NaN()
: sprout::math::fabs(x) > 1 ? -std::numeric_limits<FloatType>::quiet_NaN()
#if SPROUT_USE_BUILTIN_CMATH_FUNCTION
: std::atanh(x)
#else