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fix math functions

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This commit is contained in:
bolero-MURAKAMI 2013-05-05 00:06:30 +09:00
parent ffb876c930
commit fccb16687b
20 changed files with 209 additions and 68 deletions
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4
sprout/math/exp.hpp
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@ -8,6 +8,7 @@
#include <sprout/detail/pow.hpp>
#include <sprout/math/detail/config.hpp>
#include <sprout/math/detail/float_compute.hpp>
#include <sprout/math/isnan.hpp>
#include <sprout/math/factorial.hpp>
#include <sprout/type_traits/enabler_if.hpp>
@ -37,7 +38,8 @@ namespace sprout {
>
inline SPROUT_CONSTEXPR FloatType
exp(FloatType x) {
return x == -std::numeric_limits<FloatType>::infinity() ? FloatType(0)
return sprout::math::isnan(x) ? x
: x == -std::numeric_limits<FloatType>::infinity() ? FloatType(0)
: x == std::numeric_limits<FloatType>::infinity() ? std::numeric_limits<FloatType>::infinity()
#if SPROUT_USE_BUILTIN_CMATH_FUNCTION
: std::exp(x)