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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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9
sprout/math/log.hpp
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@ -7,6 +7,7 @@
#include <sprout/config.hpp>
#include <sprout/detail/pow.hpp>
#include <sprout/math/detail/config.hpp>
#include <sprout/math/detail/float_compute.hpp>
#include <sprout/math/constants.hpp>
#include <sprout/math/factorial.hpp>
#include <sprout/math/sqrt.hpp>
@ -39,9 +40,11 @@ namespace sprout {
>
inline SPROUT_CONSTEXPR FloatType
log(FloatType x) {
typedef double type;
return x == 0 ? std::numeric_limits<FloatType>::quiet_NaN()
: !(x > 0) ? -std::numeric_limits<FloatType>::infinity()
typedef typename sprout::math::detail::float_compute<FloatType>::type type;
return x == 0 ? -std::numeric_limits<FloatType>::infinity()
: x == 1 ? FloatType(0)
: x == std::numeric_limits<FloatType>::infinity() ? std::numeric_limits<FloatType>::infinity()
: x < 0 ? std::numeric_limits<FloatType>::quiet_NaN()
: x < 1 ? static_cast<FloatType>(-sprout::math::detail::log_impl(1 / static_cast<type>(x)))
: static_cast<FloatType>(sprout::math::detail::log_impl(static_cast<type>(x)))
;