King_DuckZ/Sprout
1
0
Fork 0
mirror of https://github.com/bolero-MURAKAMI/Sprout synced 2025-08-03 12:49:50 +00:00
Code Issues Releases Wiki Activity

fix math functions

Browse source
This commit is contained in:
bolero-MURAKAMI 2013-05-05 00:06:30 +09:00
parent ffb876c930
commit fccb16687b
20 changed files with 209 additions and 68 deletions
Download patch file Download diff file Expand all files Collapse all files

12
sprout/math/logb.hpp
View file

@ -8,6 +8,7 @@
#include <sprout/detail/pow.hpp>
#include <sprout/math/detail/config.hpp>
#include <sprout/math/detail/float_compute.hpp>
#include <sprout/math/isnan.hpp>
#include <sprout/math/log_a.hpp>
#include <sprout/math/trunc.hpp>
#include <sprout/math/itrunc.hpp>
@ -39,7 +40,7 @@ namespace sprout {
inline SPROUT_CONSTEXPR T
logb_impl_3_pos_lo(T x, T x0, T base, T exp) {
return base < 1 ? sprout::math::detail::logb_impl_3_pos_lo(
x, x0 * std::numeric_limits<T>::radix, x / (x0 / std::numeric_limits<T>::radix), exp + 1
x, x0 * std::numeric_limits<T>::radix, x / (x0 / std::numeric_limits<T>::radix), exp - 1
)
: exp
;
@ -48,7 +49,7 @@ namespace sprout {
inline SPROUT_CONSTEXPR T
logb_impl_3_pos_hi(T x, T x0, T base, T exp) {
return !(base < std::numeric_limits<T>::radix) ? sprout::math::detail::logb_impl_3_pos_hi(
x, x0 / std::numeric_limits<T>::radix, x / (x0 * std::numeric_limits<T>::radix), exp - 1
x, x0 / std::numeric_limits<T>::radix, x / (x0 * std::numeric_limits<T>::radix), exp + 1
)
: exp
;
@ -65,10 +66,10 @@ namespace sprout {
)
: exp
: base < 1 ? sprout::math::detail::logb_impl_3_pos_lo(
x, x0 * std::numeric_limits<T>::radix, x / (x0 / std::numeric_limits<T>::radix), exp + 1
x, x0 * std::numeric_limits<T>::radix, x / (x0 / std::numeric_limits<T>::radix), exp - 1
)
: !(base < std::numeric_limits<T>::radix) ? sprout::math::detail::logb_impl_3_pos_hi(
x, x0 / std::numeric_limits<T>::radix, x / (x0 * std::numeric_limits<T>::radix), exp - 1
x, x0 / std::numeric_limits<T>::radix, x / (x0 * std::numeric_limits<T>::radix), exp + 1
)
: exp
;
@ -99,7 +100,8 @@ namespace sprout {
>
inline SPROUT_CONSTEXPR FloatType
logb(FloatType x) {
return x == 0 ? -std::numeric_limits<FloatType>::infinity()
return sprout::math::isnan(x) ? x
: x == 0 ? -std::numeric_limits<FloatType>::infinity()
#if SPROUT_USE_BUILTIN_CMATH_FUNCTION
# if defined(__GNUC__)
: x == -std::numeric_limits<FloatType>::infinity()