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fix math functions

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This commit is contained in:
bolero-MURAKAMI 2013-04-26 00:25:35 +09:00
parent dad3acceea
commit 2e2b6c96ab
30 changed files with 121 additions and 84 deletions
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11
sprout/math/frac_int.hpp
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@ -5,6 +5,8 @@
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/math/detail/config.hpp>
#include <sprout/math/copysign.hpp>
#include <sprout/math/isnan.hpp>
#include <sprout/math/integer_part.hpp>
#include <sprout/type_traits/enabler_if.hpp>
#include <sprout/utility/pair/pair.hpp>
@ -16,9 +18,11 @@ namespace sprout {
inline SPROUT_CONSTEXPR sprout::pair<T, T>
frac_int_impl(T x, T ipart) {
typedef sprout::pair<T, T> type;
return x == std::numeric_limits<T>::infinity() || x == -std::numeric_limits<T>::infinity() ? type(T(0), ipart)
: x == std::numeric_limits<T>::quiet_NaN() ? type(std::numeric_limits<T>::quiet_NaN(), ipart)
: type(x - ipart, ipart)
return x == std::numeric_limits<T>::infinity() || x == -std::numeric_limits<T>::infinity() ? type(sprout::math::copysign(T(0), x), ipart)
: sprout::math::isnan(x) ? type(std::numeric_limits<T>::quiet_NaN(), ipart)
: x == 0 ? type(x, ipart)
: x == ipart ? type(T(0) * x, ipart)
: type(sprout::math::copysign(x - ipart, x), ipart)
;
}
@ -30,7 +34,6 @@ namespace sprout {
frac_int(FloatType x) {
return sprout::math::detail::frac_int_impl(x, sprout::integer_part(x));
}
template<
typename IntType,
typename sprout::enabler_if<std::is_integral<IntType>::value>::type = sprout::enabler