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

add math fmod

Browse source 
fix math cos
This commit is contained in:
bolero-MURAKAMI 2012-12-02 17:06:37 +09:00
parent d57b6e2b18
commit 18b479e3ac
15 changed files with 123 additions and 89 deletions
Download patch file Download diff file Expand all files Collapse all files

26
sprout/math/cos.hpp
View file

@ -7,6 +7,8 @@
#include <sprout/config.hpp>
#include <sprout/math/detail/config.hpp>
#include <sprout/math/factorial.hpp>
#include <sprout/math/fmod.hpp>
#include <sprout/math/constants.hpp>
#include <sprout/type_traits/enabler_if.hpp>
namespace sprout {
@ -14,9 +16,9 @@ namespace sprout {
namespace detail {
template<typename T>
inline SPROUT_CONSTEXPR T
cos_impl(T x, T tmp, std::size_t n, T x2n) {
cos_impl_1(T x, T tmp, std::size_t n, T x2n) {
return 2 * n > sprout::math::factorial_limit<T>() ? tmp
: sprout::math::detail::cos_impl(
: sprout::math::detail::cos_impl_1(
x,
tmp + (n % 2 ? -1 : 1) * x2n / sprout::math::factorial<T>(2 * n),
n + 1,
@ -25,6 +27,19 @@ namespace sprout {
;
}
template<typename FloatType>
inline SPROUT_CONSTEXPR FloatType
cos_impl(FloatType x) {
typedef double type;
return static_cast<FloatType>(sprout::math::detail::cos_impl_1(
static_cast<type>(x),
type(1),
1,
static_cast<type>(x) * static_cast<type>(x)
))
;
}
template<
typename FloatType,
typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
@ -35,12 +50,7 @@ namespace sprout {
return x == std::numeric_limits<FloatType>::infinity()
|| x == -std::numeric_limits<FloatType>::infinity()
? std::numeric_limits<FloatType>::quiet_NaN()
: static_cast<FloatType>(sprout::math::detail::cos_impl(
static_cast<type>(x),
type(1),
1,
static_cast<type>(x) * static_cast<type>(x)
))
: sprout::math::detail::cos_impl(sprout::math::fmod(x, 2 * sprout::math::pi<FloatType>()))
;
}