e_pow.c File Reference

Functions
double	__ieee754_pow (double x, double y) double __ieee754_pow(x
	if ((iy|ly)==0)
	if (ly==0)
	if (lx==0)
	if (((((int) hx > > 31)+1)|yisint)==0)
	if (iy > 0x41e00000)
	if (ix< 0x00100000)
	if (j<=0x3988E) k=0
	__HI (ax)
	__LO (s_h)=0
	__HI (t_h)
	__LO (t_h)=0
	__LO (p_h)=0
	__LO (t1)=0
	if (((((int) hx > > 31)+1)|(yisint - 1))==0)
else	if ((j &0x7fffffff) >=0x4090cc00)
	if (i > 0x3fe00000)
	__LO (t)=0
	if ((j > > 20)<=0) z
else	__HI (z)+

Variables
static const static double double	bp [] = {1.0, 1.5,}
static const static double double	dp_h [] = { 0.0, 5.84962487220764160156e-01,}
static const static double double	dp_l [] = { 0.0, 1.35003920212974897128e-08,}
static const static double double	zero = 0.0
static const static double double	one = 1.0
static const static double double	two = 2.0
static const static double double	two53 = 9007199254740992.0
static const static double double	huge = 1.0e300
static const static double double	tiny = 1.0e-300
static const static double double	L1 = 5.99999999999994648725e-01
static const static double double	L2 = 4.28571428578550184252e-01
static const static double double	L3 = 3.33333329818377432918e-01
static const static double double	L4 = 2.72728123808534006489e-01
static const static double double	L5 = 2.30660745775561754067e-01
static const static double double	L6 = 2.06975017800338417784e-01
static const static double double	P1 = 1.66666666666666019037e-01
static const static double double	P2 = -2.77777777770155933842e-03
static const static double double	P3 = 6.61375632143793436117e-05
static const static double double	P4 = -1.65339022054652515390e-06
static const static double double	P5 = 4.13813679705723846039e-08
static const static double double	lg2 = 6.93147180559945286227e-01
static const static double double	lg2_h = 6.93147182464599609375e-01
static const static double double	lg2_l = -1.90465429995776804525e-09
static const static double double	ovt = 8.0085662595372944372e-0017
static const static double double	cp = 9.61796693925975554329e-01
static const static double double	cp_h = 9.61796700954437255859e-01
static const static double double	cp_l = -7.02846165095275826516e-09
static const static double double	ivln2 = 1.44269504088896338700e+00
static const static double double	ivln2_h = 1.44269502162933349609e+00
static const static double double	ivln2_l = 1.92596299112661746887e-08
double y double	x
double y double	y
double	y1
double	t1 = (((z_h + z_l) + dp_h[k]) + t)
double	t2 = z_l - (((t1 - t) - dp_h[k]) - z_h)
double	r = s2 * s2 * (L1 + s2 * (L2 + s2 * (L3 + s2 * (L4 + s2 * (L5 + s2 * L6)))))
double	s = u * v
double	t = (double)n
double	u = ax - bp[k]
double	v = one / (ax + bp[k])
double	w = v - (z - u)
double	qqq = ax
int	i0 = ((*(int*)&one) >> 29) ^ 1
int	i1 = 1 - i0
int	i = j & 0x7fffffff
int	j = ix & 0x000fffff
int	k = (i >> 20) - 0x3ff
int	yisint
int	n = 0
int	hx = __HI(x)
int	hy = __HI(y)
int	ix = hx & 0x7fffffff
int	iy = hy & 0x7fffffff
u32	lx = __LO(x)
u32	ly = __LO(y)
	ax = __fabs(x)
	else
	s_h = s
	t_h = zero
	t_l = ax - (t_h - bp[k])
	s_l = v * ((u - s_h * t_h) - s_h * t_l)
	s2 = s * s
	p_h = u + v
	p_l = v - (p_h - u)
	z_h = cp_h * p_h
	z_l = cp_l * p_h + p_l * cp + dp_l[k]
	z = u + v

Function Documentation

__HI() [1/3]

__HI

(

ax

)

__HI() [2/3]

__HI

(

t_h

)

__HI() [3/3]

else __HI

(

z

)

__ieee754_pow()

double __ieee754_pow	(	double	x,
		double	y
	)

__LO() [1/5]

__LO ( p_h  )

pure virtual

__LO() [2/5]

__LO ( s_h  )

pure virtual

__LO() [3/5]

__LO ( t  )

pure virtual

__LO() [4/5]

__LO ( t1  )

pure virtual

__LO() [5/5]

__LO ( t_h  )

pure virtual

if() [1/11]

if

(

((((int) hx > > 31)+1)|(yisint - 1))

= = 0

)

if() [2/11]

if

(

((((int) hx > > 31)+1)|yisint)

= = 0

)

if() [3/11]

if

(

(iy|ly)

= = 0

)

if() [4/11]

else if

(

(j &0x7fffffff) >=

0x4090cc00

)

if() [5/11]

if

(

(j > > 20)<=

0

)

if() [6/11]

if	(	i	,
		0x3fe00000
	)

if() [7/11]

if

(

)

if() [8/11]

if	(	iy	,
		0x41e00000
	)

if() [9/11]

if ( j<=  0x3988E )

pure virtual

if() [10/11]

if

(

lx

= = 0

)

if() [11/11]

if

(

ly

= = 0

)

Variable Documentation

ax

ax = __fabs(x)

bp

const static double double bp[] = {1.0, 1.5,}

static

cp

const static double double cp = 9.61796693925975554329e-01

static

cp_h

const static double double cp_h = 9.61796700954437255859e-01

static

cp_l

const static double double cp_l = -7.02846165095275826516e-09

static

dp_h

const static double double dp_h[] = { 0.0, 5.84962487220764160156e-01,}

static

dp_l

const static double double dp_l[] = { 0.0, 1.35003920212974897128e-08,}

static

else

else

Initial value:

{
        double s2, s_h, s_l, t_h, t_l

huge

const static double double huge = 1.0e300

static

hx

hx = __HI(x)

hy

hy = __HI(y)

i

i = j & 0x7fffffff

i0

i0 = ((*(int*)&one) >> 29) ^ 1

i1

i1 = 1 - i0

ivln2

const static double double ivln2 = 1.44269504088896338700e+00

static

ivln2_h

const static double double ivln2_h = 1.44269502162933349609e+00

static

ivln2_l

const static double double ivln2_l = 1.92596299112661746887e-08

static

ix

ix = hx & 0x7fffffff

iy

iy = hy & 0x7fffffff

j

j = ix & 0x000fffff

k

k = (i >> 20) - 0x3ff

L1

const static double double L1 = 5.99999999999994648725e-01

static

L2

const static double double L2 = 4.28571428578550184252e-01

static

L3

const static double double L3 = 3.33333329818377432918e-01

static

L4

const static double double L4 = 2.72728123808534006489e-01

static

L5

const static double double L5 = 2.30660745775561754067e-01

static

L6

const static double double L6 = 2.06975017800338417784e-01

static

lg2

const static double double lg2 = 6.93147180559945286227e-01

static

lg2_h

const static double double lg2_h = 6.93147182464599609375e-01

static

lg2_l

const static double double lg2_l = -1.90465429995776804525e-09

static

lx

lx = __LO(x)

ly

ly = __LO(y)

n

n = 0

one

const static double double one = 1.0

static

ovt

const static double double ovt = 8.0085662595372944372e-0017

static

P1

const static double double P1 = 1.66666666666666019037e-01

static

P2

const static double double P2 = -2.77777777770155933842e-03

static

P3

const static double double P3 = 6.61375632143793436117e-05

static

P4

const static double double P4 = -1.65339022054652515390e-06

static

P5

const static double double P5 = 4.13813679705723846039e-08

static

p_h

p_h = u + v

p_l

p_l = v - (p_h - u)

qqq

qqq = ax

r

r = s2 * s2 * (L1 + s2 * (L2 + s2 * (L3 + s2 * (L4 + s2 * (L5 + s2 * L6)))))

s

s = u * v

s2

s2 = s * s

s_h

s_h = s

s_l

s_l = v * ((u - s_h * t_h) - s_h * t_l)

t

t = (double)n

t1

t1 = (((z_h + z_l) + dp_h[k]) + t)

t2

t2 = z_l - (((t1 - t) - dp_h[k]) - z_h)

t_h

t_h = zero

t_l

t_l = ax - (t_h - bp[k])

tiny

const static double double tiny = 1.0e-300

static

two

const static double double two = 2.0

static

two53

const static double double two53 = 9007199254740992.0

static

u

u = ax - bp[k]

v

v = one / (ax + bp[k])

w

w = v - (z - u)

x

double y double x

y

double y double y

y1

double y1

Initial value:

{
    double z, ax, z_h, z_l, p_h, p_l

yisint

int yisint

z

return s * z = u + v

z_h

z_h = cp_h * p_h

z_l

z_l = cp_l * p_h + p_l * cp + dp_l[k]

zero

const static double double zero = 0.0

static