fmath.hpp File Reference

#include <assert.h>
#include <float.h>
#include <limits>
#include <math.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <x86intrin.h>

Include dependency graph for fmath.hpp:

Go to the source code of this file.

Classes
union	fmath::local::fi
union	fmath::local::di
struct	fmath::local::ExpVar< N >
struct	fmath::local::ExpdVar< sbit_ >
struct	fmath::local::LogVar< N >
struct	fmath::local::C< EXP_N, LOG_N, EXPD_N >
class	fmath::PowGenerator

Namespaces
namespace	fmath
namespace	fmath::local

Macros
#define	__GNUC_PREREQ(major, minor)    ((((__GNUC__) << 16) + (__GNUC_MINOR__)) >= (((major) << 16) + (minor)))
#define	MIE_ALIGN(x)   __attribute__((aligned(x)))
#define	MIE_PACK(x, y, z, w)   ((x)*64 + (y)*16 + (z)*4 + (w))

Typedefs
typedef unsigned long long	fmath::local::uint64_t

Functions
unsigned int	fmath::local::mask (int x)
uint64_t	fmath::local::mask64 (int x)
template<class T >
const T *	fmath::local::cast_to (const void *p)
template<class T , size_t N>
size_t	fmath::local::NumOfArray (const T(&)[N])
float	fmath::exp (float x)
double	fmath::expd (double x)
__m128d	fmath::exp_pd (__m128d x)
void	fmath::expd_v (double *px, size_t n)
__m128	fmath::exp_ps (__m128 x)
float	fmath::log (float x)
__m128	fmath::log_ps (__m128 x)
float	fmath::log2 (float x)
float	fmath::exp2 (float x)
__m128d	fmath::log_pd (__m128d x)
__m128	fmath::pow_ps (__m128 x, __m128 y)
__m128d	fmath::pow_pd (__m128d x, __m128d y)

Variables
const size_t	fmath::local::EXP_TABLE_SIZE = 10
const size_t	fmath::local::EXPD_TABLE_SIZE = 11
const size_t	fmath::local::LOG_TABLE_SIZE = 12

Macro Definition Documentation

__GNUC_PREREQ

#define __GNUC_PREREQ	(		major,
			minor
	)		((((__GNUC__) << 16) + (__GNUC_MINOR__)) >= (((major) << 16) + (minor)))

 @brief fast math library for float
 @author herumi
 @url https://github.com/herumi/fmath/
 @note modified new BSD license
 http://opensource.org/licenses/BSD-3-Clause

 cl /Ox /Ob2 /arch:SSE2 /fp:fast bench.cpp -I../xbyak /EHsc /DNOMINMAX
 g++ -O3 -fomit-frame-pointer -fno-operator-names -march=core2 -mssse3

-mfpmath=sse -ffast-math -fexcess-precision=fast

MIE_ALIGN

#define MIE_ALIGN

(

x

)

__attribute__((aligned(x)))

MIE_PACK

#define MIE_PACK	(		x,
			y,
			z,
			w
	)		((x)*64 + (y)*16 + (z)*4 + (w))