mirror/Sprout
1
0
Fork 0
mirror of https://github.com/bolero-MURAKAMI/Sprout.git synced 2025-07-14 15:04:09 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

fix math functions

Browse source
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
Download patch file Download diff file Expand all files Collapse all files

9
sprout/math/trunc.hpp
View file

@ -7,6 +7,7 @@
#include <stdexcept>
#include <sprout/config.hpp>
#include <sprout/math/detail/config.hpp>
#include <sprout/math/isnan.hpp>
#include <sprout/type_traits/enabler_if.hpp>
namespace sprout {
@ -18,16 +19,20 @@ namespace sprout {
>
inline SPROUT_CONSTEXPR FloatType
trunc(FloatType x) {
return x == 0 ? FloatType(0)
return sprout::math::isnan(x) ? x
: x == std::numeric_limits<FloatType>::infinity() ? std::numeric_limits<FloatType>::infinity()
: x == -std::numeric_limits<FloatType>::infinity() ? -std::numeric_limits<FloatType>::infinity()
#if SPROUT_USE_BUILTIN_CMATH_FUNCTION
: std::trunc(x)
#else
: x == 0 ? x
: std::numeric_limits<std::uintmax_t>::max() < x || std::numeric_limits<std::uintmax_t>::max() < -x
? SPROUT_MATH_THROW_LARGE_FLOAT_ROUNDING(std::runtime_error("trunc: large float rounding."), x)
: x < 0 ? -static_cast<FloatType>(static_cast<std::uintmax_t>(-x))
: static_cast<FloatType>(static_cast<std::uintmax_t>(x))
#endif
;
}
template<
typename IntType,
typename sprout::enabler_if<std::is_integral<IntType>::value>::type = sprout::enabler