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fix math functions

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This commit is contained in:
bolero-MURAKAMI 2013-05-06 23:57:38 +09:00
parent 7794e56192
commit 56cb7702ea
19 changed files with 157 additions and 69 deletions
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9
sprout/math/itrunc.hpp
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@ -6,6 +6,8 @@
#include <stdexcept>
#include <sprout/config.hpp>
#include <sprout/math/detail/config.hpp>
#include <sprout/math/isnan.hpp>
#include <sprout/math/isinf.hpp>
#include <sprout/type_traits/enabler_if.hpp>
#if SPROUT_USE_BUILTIN_CMATH_FUNCTION
# include <sprout/math/trunc.hpp>
@ -30,7 +32,9 @@ namespace sprout {
>
inline SPROUT_CONSTEXPR To
itrunc(FloatType x) {
return sprout::math::detail::itrunc_impl<To>(sprout::math::trunc(x));
return sprout::math::isnan(x) || sprout::math::isinf(x) ? std::numeric_limits<To>::min()
: sprout::math::detail::itrunc_impl<To>(sprout::math::trunc(x))
;
}
#else
template<
@ -40,7 +44,8 @@ namespace sprout {
>
inline SPROUT_CONSTEXPR To
itrunc(FloatType x) {
return x == 0 ? To(0)
return sprout::math::isnan(x) || sprout::math::isinf(x) ? std::numeric_limits<To>::min()
: x == 0 ? To(0)
: std::numeric_limits<To>::max() < x || std::numeric_limits<To>::min() > x
? SPROUT_MATH_THROW_LARGE_FLOAT_ROUNDING(std::runtime_error("itrunc: large float rounding."), static_cast<To>(x))
: static_cast<To>(x)