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fix math functions

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This commit is contained in:
bolero-MURAKAMI 2013-02-14 18:02:43 +09:00
parent 5d809ef5c9
commit fa1d769bdf
76 changed files with 582 additions and 169 deletions
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7
sprout/math/scalbn.hpp
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@ -17,7 +17,12 @@ namespace sprout {
>
inline SPROUT_CONSTEXPR FloatType
scalbn(FloatType x, int exp) {
return x * sprout::detail::pow_n(FloatType(std::numeric_limits<FloatType>::radix), exp);
return x == 0 ? FloatType(0)
: x == std::numeric_limits<FloatType>::infinity() ? std::numeric_limits<FloatType>::infinity()
: x == -std::numeric_limits<FloatType>::infinity() ? -std::numeric_limits<FloatType>::infinity()
: exp == 0 ? x
: x * sprout::detail::pow_n(FloatType(std::numeric_limits<FloatType>::radix), exp)
;
}
template<