e_acos.c File Reference

Functions
double	__ieee754_acos (double x) double __ieee754_acos(x) double x
	if (ix >=0x3ff00000)
	if (ix< 0x3fe00000) = 1
	__LO (df)=0

Variables
static const static double double	one = 1.00000000000000000000e+00
static const static double double	pi = 3.14159265358979311600e+00
static const static double double	pio2_hi = 1.57079632679489655800e+00
static const static double double	pio2_lo = 6.12323399573676603587e-17
static const static double double	pS0 = 1.66666666666666657415e-01
static const static double double	pS1 = -3.25565818622400915405e-01
static const static double double	pS2 = 2.01212532134862925881e-01
static const static double double	pS3 = -4.00555345006794114027e-02
static const static double double	pS4 = 7.91534994289814532176e-04
static const static double double	pS5 = 3.47933107596021167570e-05
static const static double double	qS1 = -2.40339491173441421878e+00
static const static double double	qS2 = 2.02094576023350569471e+00
static const static double double	qS3 = -6.88283971605453293030e-01
static const static double double	qS4 = 7.70381505559019352791e-02
int	hx
int	ix = hx&0x7fffffff
	else
	s = sqrt(z)
	df = s
	c = (z-df*df)/(s+df)
	p = z*(pS0+z*(pS1+z*(pS2+z*(pS3+z*(pS4+z*pS5)))))
	q = one+z*(qS1+z*(qS2+z*(qS3+z*qS4)))
	r = p/q
	w = r*s+c

Function Documentation

__ieee754_acos()

double __ieee754_acos

(

double

x

)

__LO()

__LO ( df )

pure virtual

if() [1/2]

if

(

ix >=

0x3ff00000

)

if() [2/2]

if

(

)

= 1

Variable Documentation

c

c = (z-df*df)/(s+df)

df

df = s

else

else

Initial value:

{           
        z = (one-x)*0.5

hx

hx

Initial value:

{
    double z,p,q,r,w,s,c,df

ix

ix = hx&0x7fffffff

one

const static double double one = 1.00000000000000000000e+00

static

p

p = z*(pS0+z*(pS1+z*(pS2+z*(pS3+z*(pS4+z*pS5)))))

pi

const static double double pi = 3.14159265358979311600e+00

static

pio2_hi

const static double double pio2_hi = 1.57079632679489655800e+00

static

pio2_lo

const static double double pio2_lo = 6.12323399573676603587e-17

static

pS0

const static double double pS0 = 1.66666666666666657415e-01

static

pS1

const static double double pS1 = -3.25565818622400915405e-01

static

pS2

const static double double pS2 = 2.01212532134862925881e-01

static

pS3

const static double double pS3 = -4.00555345006794114027e-02

static

pS4

const static double double pS4 = 7.91534994289814532176e-04

static

pS5

const static double double pS5 = 3.47933107596021167570e-05

static

q

q = one+z*(qS1+z*(qS2+z*(qS3+z*qS4)))

qS1

const static double double qS1 = -2.40339491173441421878e+00

static

qS2

const static double double qS2 = 2.02094576023350569471e+00

static

qS3

const static double double qS3 = -6.88283971605453293030e-01

static

qS4

const static double double qS4 = 7.70381505559019352791e-02

static

r

r = p/q

s

s = sqrt(z)

w

return *df w = r*s+c