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foxbox/apps/plugins/sdl/wrappers.c
Franklin Wei 5d05b9d3e9 Quake!
This ports id Software's Quake to run on the SDL plugin runtime. The
source code originated from id under the GPLv2 license. I used
https://github.com/ahefner/sdlquake as the base of my port.

Performance is, unsurprisingly, not on par with what you're probably
used to on PC. I average about 10FPS on ipod6g, but it's still
playable.

Sound works well enough, but in-game music is not supported. I've
written ARM assembly routines for the inner sound loop. Make sure you
turn the "brightness" all the way down, or colors will look funky.

To run, extract Quake's data files to /.rockbox/quake. Have fun!

Change-Id: I4285036e967d7f0722802d43cf2096c808ca5799
2019-07-19 22:37:40 -04:00

1460 lines
47 KiB
C

#include "plugin.h"
#include "fixedpoint.h"
#include <SDL.h>
extern bool printf_enabled;
/* fixed-point wrappers */
static unsigned long lastphase = 0;
static long lastsin = 0, lastcos = 0x7fffffff;
#define PI 3.1415926535897932384626433832795
void fatal(char *fmt, ...)
{
va_list ap;
rb->splash(HZ, "FATAL");
va_start(ap, fmt);
char buf[80];
vsnprintf(buf, 80, fmt, ap);
printf("%s", buf);
rb->splash(HZ * 2, buf);
va_end(ap);
exit(1);
}
char *strtok_wrapper(char *str, const char *delim)
{
static char *save = NULL;
return strtok_r(str, delim, &save);
}
/* Implementation of strtod() and atof(),
taken from SanOS (http://www.jbox.dk/sanos/). */
static int rb_errno = 0;
static double rb_strtod(const char *str, char **endptr)
{
double number;
int exponent;
int negative;
char *p = (char *) str;
double p10;
int n;
int num_digits;
int num_decimals;
/* Reset Rockbox errno -- W.B. */
#ifdef ROCKBOX
rb_errno = 0;
#endif
// Skip leading whitespace
while (isspace(*p)) p++;
// Handle optional sign
negative = 0;
switch (*p)
{
case '-': negative = 1; // Fall through to increment position
case '+': p++;
}
number = 0.;
exponent = 0;
num_digits = 0;
num_decimals = 0;
// Process string of digits
while (isdigit(*p))
{
number = number * 10. + (*p - '0');
p++;
num_digits++;
}
// Process decimal part
if (*p == '.')
{
p++;
while (isdigit(*p))
{
number = number * 10. + (*p - '0');
p++;
num_digits++;
num_decimals++;
}
exponent -= num_decimals;
}
if (num_digits == 0)
{
#ifdef ROCKBOX
rb_errno = 1;
#else
errno = ERANGE;
#endif
return 0.0;
}
// Correct for sign
if (negative) number = -number;
// Process an exponent string
if (*p == 'e' || *p == 'E')
{
// Handle optional sign
negative = 0;
switch(*++p)
{
case '-': negative = 1; // Fall through to increment pos
case '+': p++;
}
// Process string of digits
n = 0;
while (isdigit(*p))
{
n = n * 10 + (*p - '0');
p++;
}
if (negative)
exponent -= n;
else
exponent += n;
}
#ifndef ROCKBOX
if (exponent < DBL_MIN_EXP || exponent > DBL_MAX_EXP)
{
errno = ERANGE;
return HUGE_VAL;
}
#endif
// Scale the result
p10 = 10.;
n = exponent;
if (n < 0) n = -n;
while (n)
{
if (n & 1)
{
if (exponent < 0)
number /= p10;
else
number *= p10;
}
n >>= 1;
p10 *= p10;
}
#ifndef ROCKBOX
if (number == HUGE_VAL) errno = ERANGE;
#endif
if (endptr) *endptr = p;
return number;
}
// stolen from Quake
float atof_wrapper (char *str)
{
double val;
int sign;
int c;
int decimal, total;
if (*str == '-')
{
sign = -1;
str++;
}
else
sign = 1;
val = 0;
//
// check for hex
//
if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X') )
{
str += 2;
while (1)
{
c = *str++;
if (c >= '0' && c <= '9')
val = (val*16) + c - '0';
else if (c >= 'a' && c <= 'f')
val = (val*16) + c - 'a' + 10;
else if (c >= 'A' && c <= 'F')
val = (val*16) + c - 'A' + 10;
else
return val*sign;
}
}
//
// check for character
//
if (str[0] == '\'')
{
return sign * str[1];
}
//
// assume decimal
//
decimal = -1;
total = 0;
while (1)
{
c = *str++;
if (c == '.')
{
decimal = total;
continue;
}
if (c <'0' || c > '9')
break;
val = val*10 + c - '0';
total++;
}
if (decimal == -1)
return val*sign;
while (total > decimal)
{
val /= 10;
total--;
}
return val*sign;
}
double sin_wrapper(double rads)
{
/* we want [0, 2*PI) */
while(rads >= 2*PI)
rads -= 2*PI;
while(rads < 0)
rads += 2*PI;
unsigned long phase = rads/(2*PI) * 4294967296.0;
/* caching */
if(phase == lastphase)
{
return lastsin/(lastsin < 0 ? 2147483648.0 : 2147483647.0);
}
lastphase = phase;
lastsin = fp_sincos(phase, &lastcos);
return lastsin/(lastsin < 0 ? 2147483648.0 : 2147483647.0);
}
double cos_wrapper(double rads)
{
/* we want [0, 2*PI) */
while(rads >= 2*PI)
rads -= 2*PI;
while(rads < 0)
rads += 2*PI;
unsigned long phase = rads/(2*PI) * 4294967296.0;
/* caching */
if(phase == lastphase)
{
return lastcos/(lastcos < 0 ? 2147483648.0 : 2147483647.0);
}
lastphase = phase;
lastsin = fp_sincos(phase, &lastcos);
return lastcos/(lastcos < 0 ? 2147483648.0 : 2147483647.0);
}
float tan_wrapper(float f)
{
return sin_wrapper(f)/cos_wrapper(f);
}
// Total hack. Supports only format strings of the form %Cc, where C
// is a format specifier and c is a delimiter. Surprisingly, most
// format strings aren't that complicated to need a real fscanf. This
// is just enough to make Quake run!
int fscanf_wrapper(FILE *f, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
if(strlen(fmt) != 3)
return 0; // not implemented
if(fmt[0] != '%')
return 0; // not implemented
char format = fmt[1];
char delim = fmt[2];
// extract argument
char buf[1024];
char *ptr = (format == 's' ? va_arg(ap, char*) : buf);
int c;
do {
c = fgetc(f);
*ptr++ = c;
} while(c != delim && c != EOF);
// overwrite delimiter
*(ptr-1) = 0;
//rb->splashf(HZ, "got argument %s, %s\n", fmt, buf);
switch(format)
{
case 'i':
*va_arg(ap, int*) = atoi(buf);
break;
case 'f':
*va_arg(ap, float*) = atof(buf);
break;
}
return 1;
}
/* stolen from doom */
// Here is a hacked up printf command to get the output from the game.
int printf_wrapper(const char *fmt, ...)
{
static int p_xtpt;
char p_buf[256];
rb->yield();
va_list ap;
va_start(ap, fmt);
vsnprintf(p_buf,sizeof(p_buf), fmt, ap);
va_end(ap);
rb->lcd_setfont(FONT_SYSFIXED);
rb->lcd_putsxy(0,p_xtpt, (unsigned char *)p_buf);
if (printf_enabled)
rb->lcd_update();
LOGF("%s", p_buf);
p_xtpt+=8;
if(p_xtpt>LCD_HEIGHT-8)
{
p_xtpt=0;
if (printf_enabled)
{
rb->lcd_set_backdrop(NULL);
rb->lcd_clear_display();
}
}
return 1;
}
int vprintf(const char *fmt, va_list ap)
{
char buf[256];
vsnprintf(buf, 256, fmt, ap);
return printf("%s", buf);
}
int sprintf_wrapper(char *str, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
int ret = vsnprintf(str, 9999, fmt, ap);
va_end(ap);
return ret;
}
int vsprintf_wrapper(char *str, const char *fmt, va_list ap)
{
return vsnprintf(str, 99999, fmt, ap);
}
char *strcpy_wrapper(char *dest, const char *src)
{
strlcpy(dest, src, 999);
return dest;
}
char *strdup_wrapper(const char *s) {
char *r = malloc(1+strlen(s));
strcpy(r,s);
return r;
}
char *strcat_wrapper(char *dest, const char *src)
{
rb->strlcat(dest, src, 999);
return dest;
}
char *strpbrk_wrapper(const char *s1, const char *s2)
{
while(*s1)
if(strchr(s2, *s1++))
return (char*)--s1;
return 0;
}
/* A union which permits us to convert between a float and a 32 bit
int. */
typedef union
{
float value;
uint32_t word;
} ieee_float_shape_type;
/* Get a 32 bit int from a float. */
#define GET_FLOAT_WORD(i,d) \
do { \
ieee_float_shape_type gf_u; \
gf_u.value = (d); \
(i) = gf_u.word; \
} while (0)
/* Set a float from a 32 bit int. */
#define SET_FLOAT_WORD(d,i) \
do { \
ieee_float_shape_type sf_u; \
sf_u.word = (i); \
(d) = sf_u.value; \
} while (0)
/* Absolute value, simple calculus */
float fabs_wrapper(float x)
{
return (x < 0.0f) ? -x : x;
}
float fmod(float x, float y)
{
return x - (int) (x / y) * y;
}
/* Arc tangent,
taken from glibc-2.8. */
static const float atanhi[] = {
4.6364760399e-01, /* atan(0.5)hi 0x3eed6338 */
7.8539812565e-01, /* atan(1.0)hi 0x3f490fda */
9.8279368877e-01, /* atan(1.5)hi 0x3f7b985e */
1.5707962513e+00, /* atan(inf)hi 0x3fc90fda */
};
static const float atanlo[] = {
5.0121582440e-09, /* atan(0.5)lo 0x31ac3769 */
3.7748947079e-08, /* atan(1.0)lo 0x33222168 */
3.4473217170e-08, /* atan(1.5)lo 0x33140fb4 */
7.5497894159e-08, /* atan(inf)lo 0x33a22168 */
};
static const float aT[] = {
3.3333334327e-01, /* 0x3eaaaaaa */
-2.0000000298e-01, /* 0xbe4ccccd */
1.4285714924e-01, /* 0x3e124925 */
-1.1111110449e-01, /* 0xbde38e38 */
9.0908870101e-02, /* 0x3dba2e6e */
-7.6918758452e-02, /* 0xbd9d8795 */
6.6610731184e-02, /* 0x3d886b35 */
-5.8335702866e-02, /* 0xbd6ef16b */
4.9768779427e-02, /* 0x3d4bda59 */
-3.6531571299e-02, /* 0xbd15a221 */
1.6285819933e-02, /* 0x3c8569d7 */
};
static const float zero = 0.0;
static const float
huge = 1.0e+30,
tiny = 1.0e-30,
one = 1.0f;
/* Square root function, original. */
float sqrt_wrapper(float x)
{
float z;
int32_t sign = (int)0x80000000;
int32_t ix,s,q,m,t,i;
uint32_t r;
GET_FLOAT_WORD(ix,x);
/* take care of Inf and NaN */
if((ix&0x7f800000)==0x7f800000) {
return x*x+x; /* sqrt(NaN)=NaN, sqrt(+inf)=+inf
sqrt(-inf)=sNaN */
}
/* take care of zero */
if(ix<=0) {
if((ix&(~sign))==0) return x;/* sqrt(+-0) = +-0 */
else if(ix<0)
return (x-x)/(x-x); /* sqrt(-ve) = sNaN */
}
/* normalize x */
m = (ix>>23);
if(m==0) { /* subnormal x */
for(i=0;(ix&0x00800000)==0;i++) ix<<=1;
m -= i-1;
}
m -= 127; /* unbias exponent */
ix = (ix&0x007fffff)|0x00800000;
if(m&1) /* odd m, double x to make it even */
ix += ix;
m >>= 1; /* m = [m/2] */
/* generate sqrt(x) bit by bit */
ix += ix;
q = s = 0; /* q = sqrt(x) */
r = 0x01000000; /* r = moving bit from right to left */
while(r!=0) {
t = s+r;
if(t<=ix) {
s = t+r;
ix -= t;
q += r;
}
ix += ix;
r>>=1;
}
/* use floating add to find out rounding direction */
if(ix!=0) {
z = one-tiny; /* trigger inexact flag */
if (z>=one) {
z = one+tiny;
if (z>one)
q += 2;
else
q += (q&1);
}
}
ix = (q>>1)+0x3f000000;
ix += (m <<23);
SET_FLOAT_WORD(z,ix);
return z;
}
float atan_wrapper(float x)
{
float w,s1,s2,z;
int32_t ix,hx,id;
GET_FLOAT_WORD(hx,x);
ix = hx&0x7fffffff;
if(ix>=0x50800000) { /* if |x| >= 2^34 */
if(ix>0x7f800000)
return x+x; /* NaN */
if(hx>0) return atanhi[3]+atanlo[3];
else return -atanhi[3]-atanlo[3];
} if (ix < 0x3ee00000) { /* |x| < 0.4375 */
if (ix < 0x31000000) { /* |x| < 2^-29 */
if(huge+x>one) return x; /* raise inexact */
}
id = -1;
} else {
x = fabs_wrapper(x);
if (ix < 0x3f980000) { /* |x| < 1.1875 */
if (ix < 0x3f300000) { /* 7/16 <=|x|<11/16 */
id = 0; x = ((float)2.0*x-one)/((float)2.0+x);
} else { /* 11/16<=|x|< 19/16 */
id = 1; x = (x-one)/(x+one);
}
} else {
if (ix < 0x401c0000) { /* |x| < 2.4375 */
id = 2; x = (x-(float)1.5)/(one+(float)1.5*x);
} else { /* 2.4375 <= |x| < 2^66 */
id = 3; x = -(float)1.0/x;
}
}}
/* end of argument reduction */
z = x*x;
w = z*z;
/* break sum from i=0 to 10 aT[i]z**(i+1) into odd and even poly */
s1 = z*(aT[0]+w*(aT[2]+w*(aT[4]+w*(aT[6]+w*(aT[8]+w*aT[10])))));
s2 = w*(aT[1]+w*(aT[3]+w*(aT[5]+w*(aT[7]+w*aT[9]))));
if (id<0) return x - x*(s1+s2);
else {
z = atanhi[id] - ((x*(s1+s2) - atanlo[id]) - x);
return (hx<0)? -z:z;
}
}
/* Arc tangent from two variables, original. */
static const float
pi_o_4 = 7.8539818525e-01, /* 0x3f490fdb */
pi_o_2 = 1.5707963705e+00, /* 0x3fc90fdb */
pi = 3.1415927410e+00, /* 0x40490fdb */
pi_lo = -8.7422776573e-08; /* 0xb3bbbd2e */
float atan2_wrapper(float y, float x)
{
float z;
int32_t k,m,hx,hy,ix,iy;
GET_FLOAT_WORD(hx,x);
ix = hx&0x7fffffff;
GET_FLOAT_WORD(hy,y);
iy = hy&0x7fffffff;
if((ix>0x7f800000)||
(iy>0x7f800000)) /* x or y is NaN */
return x+y;
if(hx==0x3f800000) return atan_wrapper(y); /* x=1.0 */
m = ((hy>>31)&1)|((hx>>30)&2); /* 2*sign(x)+sign(y) */
/* when y = 0 */
if(iy==0) {
switch(m) {
case 0:
case 1: return y; /* atan(+-0,+anything)=+-0 */
case 2: return pi+tiny;/* atan(+0,-anything) = pi */
case 3: return -pi-tiny;/* atan(-0,-anything) =-pi */
}
}
/* when x = 0 */
if(ix==0) return (hy<0)? -pi_o_2-tiny: pi_o_2+tiny;
/* when x is INF */
if(ix==0x7f800000) {
if(iy==0x7f800000) {
switch(m) {
case 0: return pi_o_4+tiny;/* atan(+INF,+INF) */
case 1: return -pi_o_4-tiny;/* atan(-INF,+INF) */
case 2: return (float)3.0*pi_o_4+tiny;/*atan(+INF,-INF)*/
case 3: return (float)-3.0*pi_o_4-tiny;/*atan(-INF,-INF)*/
}
} else {
switch(m) {
case 0: return zero ; /* atan(+...,+INF) */
case 1: return -zero ; /* atan(-...,+INF) */
case 2: return pi+tiny ; /* atan(+...,-INF) */
case 3: return -pi-tiny ; /* atan(-...,-INF) */
}
}
}
/* when y is INF */
if(iy==0x7f800000) return (hy<0)? -pi_o_2-tiny: pi_o_2+tiny;
/* compute y/x */
k = (iy-ix)>>23;
if(k > 60) z=pi_o_2+(float)0.5*pi_lo; /* |y/x| > 2**60 */
else if(hx<0&&k<-60) z=0.0; /* |y|/x < -2**60 */
else z=atan_wrapper(fabs_wrapper(y/x)); /* safe to do y/x */
switch (m) {
case 0: return z ; /* atan(+,+) */
case 1: {
uint32_t zh;
GET_FLOAT_WORD(zh,z);
SET_FLOAT_WORD(z,zh ^ 0x80000000);
}
return z ; /* atan(-,+) */
case 2: return pi-(z-pi_lo);/* atan(+,-) */
default: /* case 3 */
return (z-pi_lo)-pi;/* atan(-,-) */
}
}
union ieee754_double
{
double d;
/* This is the IEEE 754 double-precision format. */
struct
{
#ifdef ROCKBOX_BIG_ENDIAN
unsigned int negative:1;
unsigned int exponent:11;
/* Together these comprise the mantissa. */
unsigned int mantissa0:20;
unsigned int mantissa1:32;
#else /* ROCKBOX_LITTLE_ENDIAN */
/* Together these comprise the mantissa. */
unsigned int mantissa1:32;
unsigned int mantissa0:20;
unsigned int exponent:11;
unsigned int negative:1;
#endif /* ROCKBOX_LITTLE_ENDIAN */
} ieee;
/* This format makes it easier to see if a NaN is a signalling NaN. */
struct
{
#ifdef ROCKBOX_BIG_ENDIAN
unsigned int negative:1;
unsigned int exponent:11;
unsigned int quiet_nan:1;
/* Together these comprise the mantissa. */
unsigned int mantissa0:19;
unsigned int mantissa1:32;
#else /* ROCKBOX_LITTLE_ENDIAN */
/* Together these comprise the mantissa. */
unsigned int mantissa1:32;
unsigned int mantissa0:19;
unsigned int quiet_nan:1;
unsigned int exponent:11;
unsigned int negative:1;
#endif /* ROCKBOX_LITTLE_ENDIAN */
} ieee_nan;
};
static const volatile float TWOM100 = 7.88860905e-31;
static const volatile float TWO127 = 1.7014118346e+38;
/* Exponential function,
taken from glibc-2.8
As it uses double values and udefines some symbols,
it was moved to the end of the source code */
#define W52 (2.22044605e-16)
#define W55 (2.77555756e-17)
#define W58 (3.46944695e-18)
#define W59 (1.73472348e-18)
#define W60 (8.67361738e-19)
const float __exp_deltatable[178] = {
0*W60, 16558714*W60, -10672149*W59, 1441652*W60,
-15787963*W55, 462888*W60, 7291806*W60, 1698880*W60,
-14375103*W58, -2021016*W60, 728829*W60, -3759654*W60,
3202123*W60, -10916019*W58, -251570*W60, -1043086*W60,
8207536*W60, -409964*W60, -5993931*W60, -475500*W60,
2237522*W60, 324170*W60, -244117*W60, 32077*W60,
123907*W60, -1019734*W60, -143*W60, 813077*W60,
743345*W60, 462461*W60, 629794*W60, 2125066*W60,
-2339121*W60, -337951*W60, 9922067*W60, -648704*W60,
149407*W60, -2687209*W60, -631608*W60, 2128280*W60,
-4882082*W60, 2001360*W60, 175074*W60, 2923216*W60,
-538947*W60, -1212193*W60, -1920926*W60, -1080577*W60,
3690196*W60, 2643367*W60, 2911937*W60, 671455*W60,
-1128674*W60, 593282*W60, -5219347*W60, -1941490*W60,
11007953*W60, 239609*W60, -2969658*W60, -1183650*W60,
942998*W60, 699063*W60, 450569*W60, -329250*W60,
-7257875*W60, -312436*W60, 51626*W60, 555877*W60,
-641761*W60, 1565666*W60, 884327*W60, -10960035*W60,
-2004679*W60, -995793*W60, -2229051*W60, -146179*W60,
-510327*W60, 1453482*W60, -3778852*W60, -2238056*W60,
-4895983*W60, 3398883*W60, -252738*W60, 1230155*W60,
346918*W60, 1109352*W60, 268941*W60, -2930483*W60,
-1036263*W60, -1159280*W60, 1328176*W60, 2937642*W60,
-9371420*W60, -6902650*W60, -1419134*W60, 1442904*W60,
-1319056*W60, -16369*W60, 696555*W60, -279987*W60,
-7919763*W60, 252741*W60, 459711*W60, -1709645*W60,
354913*W60, 6025867*W60, -421460*W60, -853103*W60,
-338649*W60, 962151*W60, 955965*W60, 784419*W60,
-3633653*W60, 2277133*W60, -8847927*W52, 1223028*W60,
5907079*W60, 623167*W60, 5142888*W60, 2599099*W60,
1214280*W60, 4870359*W60, 593349*W60, -57705*W60,
7761209*W60, -5564097*W60, 2051261*W60, 6216869*W60,
4692163*W60, 601691*W60, -5264906*W60, 1077872*W60,
-3205949*W60, 1833082*W60, 2081746*W60, -987363*W60,
-1049535*W60, 2015244*W60, 874230*W60, 2168259*W60,
-1740124*W60, -10068269*W60, -18242*W60, -3013583*W60,
580601*W60, -2547161*W60, -535689*W60, 2220815*W60,
1285067*W60, 2806933*W60, -983086*W60, -1729097*W60,
-1162985*W60, -2561904*W60, 801988*W60, 244351*W60,
1441893*W60, -7517981*W60, 271781*W60, -15021588*W60,
-2341588*W60, -919198*W60, 1642232*W60, 4771771*W60,
-1220099*W60, -3062372*W60, 628624*W60, 1278114*W60,
13083513*W60, -10521925*W60, 3180310*W60, -1659307*W60,
3543773*W60, 2501203*W60, 4151*W60, -340748*W60,
-2285625*W60, 2495202*W60
};
const double __exp_atable[355] /* __attribute__((mode(DF))) */ = {
0.707722561055888932371, /* 0x0.b52d4e46605c27ffd */
0.709106182438804188967, /* 0x0.b587fb96f75097ffb */
0.710492508843861281234, /* 0x0.b5e2d649899167ffd */
0.711881545564593931623, /* 0x0.b63dde74d36bdfffe */
0.713273297897442870573, /* 0x0.b699142f945f87ffc */
0.714667771153751463236, /* 0x0.b6f477909c4ea0001 */
0.716064970655995725059, /* 0x0.b75008aec758f8004 */
0.717464901723956938193, /* 0x0.b7abc7a0eea7e0002 */
0.718867569715736398602, /* 0x0.b807b47e1586c7ff8 */
0.720272979947266023271, /* 0x0.b863cf5d10e380003 */
0.721681137825144314297, /* 0x0.b8c01855195c37ffb */
0.723092048691992950199, /* 0x0.b91c8f7d213740004 */
0.724505717938892290800, /* 0x0.b97934ec5002d0007 */
0.725922150953176470431, /* 0x0.b9d608b9c92ea7ffc */
0.727341353138962865022, /* 0x0.ba330afcc29e98003 */
0.728763329918453162104, /* 0x0.ba903bcc8618b7ffc */
0.730188086709957051568, /* 0x0.baed9b40591ba0000 */
0.731615628948127705309, /* 0x0.bb4b296f931e30002 */
0.733045962086486091436, /* 0x0.bba8e671a05617ff9 */
0.734479091556371366251, /* 0x0.bc06d25dd49568001 */
0.735915022857225542529, /* 0x0.bc64ed4bce8f6fff9 */
0.737353761441304711410, /* 0x0.bcc33752f915d7ff9 */
0.738795312814142124419, /* 0x0.bd21b08af98e78005 */
0.740239682467211168593, /* 0x0.bd80590b65e9a8000 */
0.741686875913991849885, /* 0x0.bddf30ebec4a10000 */
0.743136898669507939299, /* 0x0.be3e38443c84e0007 */
0.744589756269486091620, /* 0x0.be9d6f2c1d32a0002 */
0.746045454254026796384, /* 0x0.befcd5bb59baf8004 */
0.747503998175051087583, /* 0x0.bf5c6c09ca84c0003 */
0.748965393601880857739, /* 0x0.bfbc322f5b18b7ff8 */
0.750429646104262104698, /* 0x0.c01c2843f776fffff */
0.751896761271877989160, /* 0x0.c07c4e5fa18b88002 */
0.753366744698445112140, /* 0x0.c0dca49a5fb18fffd */
0.754839601988627206827, /* 0x0.c13d2b0c444db0005 */
0.756315338768691947122, /* 0x0.c19de1cd798578006 */
0.757793960659406629066, /* 0x0.c1fec8f623723fffd */
0.759275473314173443536, /* 0x0.c25fe09e8a0f47ff8 */
0.760759882363831851927, /* 0x0.c2c128dedc88f8000 */
0.762247193485956486805, /* 0x0.c322a1cf7d6e7fffa */
0.763737412354726363781, /* 0x0.c3844b88cb9347ffc */
0.765230544649828092739, /* 0x0.c3e626232bd8f7ffc */
0.766726596071518051729, /* 0x0.c44831b719bf18002 */
0.768225572321911687194, /* 0x0.c4aa6e5d12d078001 */
0.769727479119219348810, /* 0x0.c50cdc2da64a37ffb */
0.771232322196981678892, /* 0x0.c56f7b41744490001 */
0.772740107296721268087, /* 0x0.c5d24bb1259e70004 */
0.774250840160724651565, /* 0x0.c6354d95640dd0007 */
0.775764526565368872643, /* 0x0.c6988106fec447fff */
0.777281172269557396602, /* 0x0.c6fbe61eb1bd0ffff */
0.778800783068235302750, /* 0x0.c75f7cf560942fffc */
0.780323364758801041312, /* 0x0.c7c345a3f1983fffe */
0.781848923151573727006, /* 0x0.c8274043594cb0002 */
0.783377464064598849602, /* 0x0.c88b6cec94b3b7ff9 */
0.784908993312207869935, /* 0x0.c8efcbb89cba27ffe */
0.786443516765346961618, /* 0x0.c9545cc0a88c70003 */
0.787981040257604625744, /* 0x0.c9b9201dc643bfffa */
0.789521569657452682047, /* 0x0.ca1e15e92a5410007 */
0.791065110849462849192, /* 0x0.ca833e3c1ae510005 */
0.792611669712891875319, /* 0x0.cae8992fd84667ffd */
0.794161252150049179450, /* 0x0.cb4e26ddbc207fff8 */
0.795713864077794763584, /* 0x0.cbb3e75f301b60003 */
0.797269511407239561694, /* 0x0.cc19dacd978cd8002 */
0.798828200086368567220, /* 0x0.cc8001427e55d7ffb */
0.800389937624300440456, /* 0x0.cce65ade24d360006 */
0.801954725261124767840, /* 0x0.cd4ce7a5de839fffb */
0.803522573691593189330, /* 0x0.cdb3a7c79a678fffd */
0.805093487311204114563, /* 0x0.ce1a9b563965ffffc */
0.806667472122675088819, /* 0x0.ce81c26b838db8000 */
0.808244534127439906441, /* 0x0.cee91d213f8428002 */
0.809824679342317166307, /* 0x0.cf50ab9144d92fff9 */
0.811407913793616542005, /* 0x0.cfb86dd5758c2ffff */
0.812994243520784198882, /* 0x0.d0206407c20e20005 */
0.814583674571603966162, /* 0x0.d0888e4223facfff9 */
0.816176213022088536960, /* 0x0.d0f0ec9eb3f7c8002 */
0.817771864936188586101, /* 0x0.d1597f377d6768002 */
0.819370636400374108252, /* 0x0.d1c24626a46eafff8 */
0.820972533518165570298, /* 0x0.d22b41865ff1e7ff9 */
0.822577562404315121269, /* 0x0.d2947170f32ec7ff9 */
0.824185729164559344159, /* 0x0.d2fdd60097795fff8 */
0.825797039949601741075, /* 0x0.d3676f4fb796d0001 */
0.827411500902565544264, /* 0x0.d3d13d78b5f68fffb */
0.829029118181348834154, /* 0x0.d43b40960546d8001 */
0.830649897953322891022, /* 0x0.d4a578c222a058000 */
0.832273846408250750368, /* 0x0.d50fe617a3ba78005 */
0.833900969738858188772, /* 0x0.d57a88b1218e90002 */
0.835531274148056613016, /* 0x0.d5e560a94048f8006 */
0.837164765846411529371, /* 0x0.d6506e1aac8078003 */
0.838801451086016225394, /* 0x0.d6bbb1204074e0001 */
0.840441336100884561780, /* 0x0.d72729d4c28518004 */
0.842084427144139224814, /* 0x0.d792d8530e12b0001 */
0.843730730487052604790, /* 0x0.d7febcb61273e7fff */
0.845380252404570153833, /* 0x0.d86ad718c308dfff9 */
0.847032999194574087728, /* 0x0.d8d727962c69d7fff */
0.848688977161248581090, /* 0x0.d943ae49621ce7ffb */
0.850348192619261200615, /* 0x0.d9b06b4d832ef8005 */
0.852010651900976245816, /* 0x0.da1d5ebdc22220005 */
0.853676361342631029337, /* 0x0.da8a88b555baa0006 */
0.855345327311054837175, /* 0x0.daf7e94f965f98004 */
0.857017556155879489641, /* 0x0.db6580a7c98f7fff8 */
0.858693054267390953857, /* 0x0.dbd34ed9617befff8 */
0.860371828028939855647, /* 0x0.dc4153ffc8b65fff9 */
0.862053883854957292436, /* 0x0.dcaf90368bfca8004 */
0.863739228154875360306, /* 0x0.dd1e0399328d87ffe */
0.865427867361348468455, /* 0x0.dd8cae435d303fff9 */
0.867119807911702289458, /* 0x0.ddfb9050b1cee8006 */
0.868815056264353846599, /* 0x0.de6aa9dced8448001 */
0.870513618890481399881, /* 0x0.ded9fb03db7320006 */
0.872215502247877139094, /* 0x0.df4983e1380657ff8 */
0.873920712852848668986, /* 0x0.dfb94490ffff77ffd */
0.875629257204025623884, /* 0x0.e0293d2f1cb01fff9 */
0.877341141814212965880, /* 0x0.e0996dd786fff0007 */
0.879056373217612985183, /* 0x0.e109d6a64f5d57ffc */
0.880774957955916648615, /* 0x0.e17a77b78e72a7ffe */
0.882496902590150900078, /* 0x0.e1eb5127722cc7ff8 */
0.884222213673356738383, /* 0x0.e25c63121fb0c8006 */
0.885950897802399772740, /* 0x0.e2cdad93ec5340003 */
0.887682961567391237685, /* 0x0.e33f30c925fb97ffb */
0.889418411575228162725, /* 0x0.e3b0ecce2d05ffff9 */
0.891157254447957902797, /* 0x0.e422e1bf727718006 */
0.892899496816652704641, /* 0x0.e4950fb9713fc7ffe */
0.894645145323828439008, /* 0x0.e50776d8b0e60fff8 */
0.896394206626591749641, /* 0x0.e57a1739c8fadfffc */
0.898146687421414902124, /* 0x0.e5ecf0f97c5798007 */
0.899902594367530173098, /* 0x0.e660043464e378005 */
0.901661934163603406867, /* 0x0.e6d3510747e150006 */
0.903424713533971135418, /* 0x0.e746d78f06cd97ffd */
0.905190939194458810123, /* 0x0.e7ba97e879c91fffc */
0.906960617885092856864, /* 0x0.e82e92309390b0007 */
0.908733756358986566306, /* 0x0.e8a2c6845544afffa */
0.910510361377119825629, /* 0x0.e9173500c8abc7ff8 */
0.912290439722343249336, /* 0x0.e98bddc30f98b0002 */
0.914073998177417412765, /* 0x0.ea00c0e84bc4c7fff */
0.915861043547953501680, /* 0x0.ea75de8db8094fffe */
0.917651582652244779397, /* 0x0.eaeb36d09d3137ffe */
0.919445622318405764159, /* 0x0.eb60c9ce4ed3dffff */
0.921243169397334638073, /* 0x0.ebd697a43995b0007 */
0.923044230737526172328, /* 0x0.ec4ca06fc7768fffa */
0.924848813220121135342, /* 0x0.ecc2e44e865b6fffb */
0.926656923710931002014, /* 0x0.ed39635df34e70006 */
0.928468569126343790092, /* 0x0.edb01dbbc2f5b7ffa */
0.930283756368834757725, /* 0x0.ee2713859aab57ffa */
0.932102492359406786818, /* 0x0.ee9e44d9342870004 */
0.933924784042873379360, /* 0x0.ef15b1d4635438005 */
0.935750638358567643520, /* 0x0.ef8d5a94f60f50007 */
0.937580062297704630580, /* 0x0.f0053f38f345cffff */
0.939413062815381727516, /* 0x0.f07d5fde3a2d98001 */
0.941249646905368053689, /* 0x0.f0f5bca2d481a8004 */
0.943089821583810716806, /* 0x0.f16e55a4e497d7ffe */
0.944933593864477061592, /* 0x0.f1e72b028a2827ffb */
0.946780970781518460559, /* 0x0.f2603cd9fb5430001 */
0.948631959382661205081, /* 0x0.f2d98b497d2a87ff9 */
0.950486566729423554277, /* 0x0.f353166f63e3dffff */
0.952344799896018723290, /* 0x0.f3ccde6a11ae37ffe */
0.954206665969085765512, /* 0x0.f446e357f66120000 */
0.956072172053890279009, /* 0x0.f4c12557964f0fff9 */
0.957941325265908139014, /* 0x0.f53ba48781046fffb */
0.959814132734539637840, /* 0x0.f5b66106555d07ffa */
0.961690601603558903308, /* 0x0.f6315af2c2027fffc */
0.963570739036113010927, /* 0x0.f6ac926b8aeb80004 */
0.965454552202857141381, /* 0x0.f728078f7c5008002 */
0.967342048278315158608, /* 0x0.f7a3ba7d66a908001 */
0.969233234469444204768, /* 0x0.f81fab543e1897ffb */
0.971128118008140250896, /* 0x0.f89bda33122c78007 */
0.973026706099345495256, /* 0x0.f9184738d4cf97ff8 */
0.974929006031422851235, /* 0x0.f994f284d3a5c0008 */
0.976835024947348973265, /* 0x0.fa11dc35bc7820002 */
0.978744770239899142285, /* 0x0.fa8f046b4fb7f8007 */
0.980658249138918636210, /* 0x0.fb0c6b449ab1cfff9 */
0.982575468959622777535, /* 0x0.fb8a10e1088fb7ffa */
0.984496437054508843888, /* 0x0.fc07f5602d79afffc */
0.986421160608523028820, /* 0x0.fc8618e0e55e47ffb */
0.988349647107594098099, /* 0x0.fd047b83571b1fffa */
0.990281903873210800357, /* 0x0.fd831d66f4c018002 */
0.992217938695037382475, /* 0x0.fe01fead3320bfff8 */
0.994157757657894713987, /* 0x0.fe811f703491e8006 */
0.996101369488558541238, /* 0x0.ff007fd5744490005 */
0.998048781093141101932, /* 0x0.ff801ffa9b9280007 */
1.000000000000000000000, /* 0x1.00000000000000000 */
1.001955033605393285965, /* 0x1.0080200565d29ffff */
1.003913889319761887310, /* 0x1.0100802aa0e80fff0 */
1.005876574715736104818, /* 0x1.01812090377240007 */
1.007843096764807100351, /* 0x1.020201541aad7fff6 */
1.009813464316352327214, /* 0x1.0283229c4c9820007 */
1.011787683565730677817, /* 0x1.030484836910a000e */
1.013765762469146736174, /* 0x1.0386272b9c077fffe */
1.015747708536026694351, /* 0x1.04080ab526304fff0 */
1.017733529475172815584, /* 0x1.048a2f412375ffff0 */
1.019723232714418781378, /* 0x1.050c94ef7ad5e000a */
1.021716825883923762690, /* 0x1.058f3be0f1c2d0004 */
1.023714316605201180057, /* 0x1.06122436442e2000e */
1.025715712440059545995, /* 0x1.06954e0fec63afff2 */
1.027721021151397406936, /* 0x1.0718b98f41c92fff6 */
1.029730250269221158939, /* 0x1.079c66d49bb2ffff1 */
1.031743407506447551857, /* 0x1.082056011a9230009 */
1.033760500517691527387, /* 0x1.08a487359ebd50002 */
1.035781537016238873464, /* 0x1.0928fa93490d4fff3 */
1.037806524719013578963, /* 0x1.09adb03b3e5b3000d */
1.039835471338248051878, /* 0x1.0a32a84e9e5760004 */
1.041868384612101516848, /* 0x1.0ab7e2eea5340ffff */
1.043905272300907460835, /* 0x1.0b3d603ca784f0009 */
1.045946142174331239262, /* 0x1.0bc3205a042060000 */
1.047991002016745332165, /* 0x1.0c4923682a086fffe */
1.050039859627715177527, /* 0x1.0ccf698898f3a000d */
1.052092722826109660856, /* 0x1.0d55f2dce5d1dfffb */
1.054149599440827866881, /* 0x1.0ddcbf86b09a5fff6 */
1.056210497317612961855, /* 0x1.0e63cfa7abc97fffd */
1.058275424318780855142, /* 0x1.0eeb23619c146fffb */
1.060344388322010722446, /* 0x1.0f72bad65714bffff */
1.062417397220589476718, /* 0x1.0ffa9627c38d30004 */
1.064494458915699715017, /* 0x1.1082b577d0eef0003 */
1.066575581342167566880, /* 0x1.110b18e893a90000a */
1.068660772440545025953, /* 0x1.1193c09c267610006 */
1.070750040138235936705, /* 0x1.121cacb4959befff6 */
1.072843392435016474095, /* 0x1.12a5dd543cf36ffff */
1.074940837302467588937, /* 0x1.132f529d59552000b */
1.077042382749654914030, /* 0x1.13b90cb250d08fff5 */
1.079148036789447484528, /* 0x1.14430bb58da3dfff9 */
1.081257807444460983297, /* 0x1.14cd4fc984c4a000e */
1.083371702785017154417, /* 0x1.1557d910df9c7000e */
1.085489730853784307038, /* 0x1.15e2a7ae292d30002 */
1.087611899742884524772, /* 0x1.166dbbc422d8c0004 */
1.089738217537583819804, /* 0x1.16f9157586772ffff */
1.091868692357631731528, /* 0x1.1784b4e533cacfff0 */
1.094003332327482702577, /* 0x1.18109a360fc23fff2 */
1.096142145591650907149, /* 0x1.189cc58b155a70008 */
1.098285140311341168136, /* 0x1.1929370751ea50002 */
1.100432324652149906842, /* 0x1.19b5eecdd79cefff0 */
1.102583706811727015711, /* 0x1.1a42ed01dbdba000e */
1.104739294993289488947, /* 0x1.1ad031c69a2eafff0 */
1.106899097422573863281, /* 0x1.1b5dbd3f66e120003 */
1.109063122341542140286, /* 0x1.1beb8f8fa8150000b */
1.111231377994659874592, /* 0x1.1c79a8dac6ad0fff4 */
1.113403872669181282605, /* 0x1.1d0809445a97ffffc */
1.115580614653132185460, /* 0x1.1d96b0effc9db000e */
1.117761612217810673898, /* 0x1.1e25a001332190000 */
1.119946873713312474002, /* 0x1.1eb4d69bdb2a9fff1 */
1.122136407473298902480, /* 0x1.1f4454e3bfae00006 */
1.124330221845670330058, /* 0x1.1fd41afcbb48bfff8 */
1.126528325196519908506, /* 0x1.2064290abc98c0001 */
1.128730725913251964394, /* 0x1.20f47f31c9aa7000f */
1.130937432396844410880, /* 0x1.21851d95f776dfff0 */
1.133148453059692917203, /* 0x1.2216045b6784efffa */
1.135363796355857157764, /* 0x1.22a733a6692ae0004 */
1.137583470716100553249, /* 0x1.2338ab9b3221a0004 */
1.139807484614418608939, /* 0x1.23ca6c5e27aadfff7 */
1.142035846532929888057, /* 0x1.245c7613b7f6c0004 */
1.144268564977221958089, /* 0x1.24eec8e06b035000c */
1.146505648458203463465, /* 0x1.258164e8cea85fff8 */
1.148747105501412235671, /* 0x1.26144a5180d380009 */
1.150992944689175123667, /* 0x1.26a7793f5de2efffa */
1.153243174560058870217, /* 0x1.273af1d712179000d */
1.155497803703682491111, /* 0x1.27ceb43d81d42fff1 */
1.157756840726344771440, /* 0x1.2862c097a3d29000c */
1.160020294239811677834, /* 0x1.28f7170a74cf4fff1 */
1.162288172883275239058, /* 0x1.298bb7bb0faed0004 */
1.164560485298402170388, /* 0x1.2a20a2ce920dffff4 */
1.166837240167474476460, /* 0x1.2ab5d86a4631ffff6 */
1.169118446164539637555, /* 0x1.2b4b58b36d5220009 */
1.171404112007080167155, /* 0x1.2be123cf786790002 */
1.173694246390975415341, /* 0x1.2c7739e3c0aac000d */
1.175988858069749065617, /* 0x1.2d0d9b15deb58fff6 */
1.178287955789017793514, /* 0x1.2da4478b627040002 */
1.180591548323240091978, /* 0x1.2e3b3f69fb794fffc */
1.182899644456603782686, /* 0x1.2ed282d76421d0004 */
1.185212252993012693694, /* 0x1.2f6a11f96c685fff3 */
1.187529382762033236513, /* 0x1.3001ecf60082ffffa */
1.189851042595508889847, /* 0x1.309a13f30f28a0004 */
1.192177241354644978669, /* 0x1.31328716a758cfff7 */
1.194507987909589896687, /* 0x1.31cb4686e1e85fffb */
1.196843291137896336843, /* 0x1.32645269dfd04000a */
1.199183159977805113226, /* 0x1.32fdaae604c39000f */
1.201527603343041317132, /* 0x1.339750219980dfff3 */
1.203876630171082595692, /* 0x1.3431424300e480007 */
1.206230249419600664189, /* 0x1.34cb8170b3fee000e */
1.208588470077065268869, /* 0x1.35660dd14dbd4fffc */
1.210951301134513435915, /* 0x1.3600e78b6bdfc0005 */
1.213318751604272271958, /* 0x1.369c0ec5c38ebfff2 */
1.215690830512196507537, /* 0x1.373783a718d29000f */
1.218067546930756250870, /* 0x1.37d3465662f480007 */
1.220448909901335365929, /* 0x1.386f56fa770fe0008 */
1.222834928513994334780, /* 0x1.390bb5ba5fc540004 */
1.225225611877684750397, /* 0x1.39a862bd3c7a8fff3 */
1.227620969111500981433, /* 0x1.3a455e2a37bcafffd */
1.230021009336254911271, /* 0x1.3ae2a8287dfbefff6 */
1.232425741726685064472, /* 0x1.3b8040df76f39fffa */
1.234835175450728295084, /* 0x1.3c1e287682e48fff1 */
1.237249319699482263931, /* 0x1.3cbc5f151b86bfff8 */
1.239668183679933477545, /* 0x1.3d5ae4e2cc0a8000f */
1.242091776620540377629, /* 0x1.3df9ba07373bf0006 */
1.244520107762172811399, /* 0x1.3e98deaa0d8cafffe */
1.246953186383919165383, /* 0x1.3f3852f32973efff0 */
1.249391019292643401078, /* 0x1.3fd816ffc72b90001 */
1.251833623164381181797, /* 0x1.40782b17863250005 */
1.254280999953110153911, /* 0x1.41188f42caf400000 */
1.256733161434815393410, /* 0x1.41b943b42945bfffd */
1.259190116985283935980, /* 0x1.425a4893e5f10000a */
1.261651875958665236542, /* 0x1.42fb9e0a2df4c0009 */
1.264118447754797758244, /* 0x1.439d443f608c4fff9 */
1.266589841787181258708, /* 0x1.443f3b5bebf850008 */
1.269066067469190262045, /* 0x1.44e183883e561fff7 */
1.271547134259576328224, /* 0x1.45841cecf7a7a0001 */
1.274033051628237434048, /* 0x1.462707b2c43020009 */
1.276523829025464573684, /* 0x1.46ca44023aa410007 */
1.279019475999373156531, /* 0x1.476dd2045d46ffff0 */
1.281520002043128991825, /* 0x1.4811b1e1f1f19000b */
1.284025416692967214122, /* 0x1.48b5e3c3edd74fff4 */
1.286535729509738823464, /* 0x1.495a67d3613c8fff7 */
1.289050950070396384145, /* 0x1.49ff3e396e19d000b */
1.291571087985403654081, /* 0x1.4aa4671f5b401fff1 */
1.294096152842774794011, /* 0x1.4b49e2ae56d19000d */
1.296626154297237043484, /* 0x1.4befb10fd84a3fff4 */
1.299161101984141142272, /* 0x1.4c95d26d41d84fff8 */
1.301701005575179204100, /* 0x1.4d3c46f01d9f0fff3 */
1.304245874766450485904, /* 0x1.4de30ec21097d0003 */
1.306795719266019562007, /* 0x1.4e8a2a0ccce3d0002 */
1.309350548792467483458, /* 0x1.4f3198fa10346fff5 */
1.311910373099227200545, /* 0x1.4fd95bb3be8cffffd */
1.314475201942565174546, /* 0x1.50817263bf0e5fffb */
1.317045045107389400535, /* 0x1.5129dd3418575000e */
1.319619912422941299109, /* 0x1.51d29c4f01c54ffff */
1.322199813675649204855, /* 0x1.527bafde83a310009 */
1.324784758729532718739, /* 0x1.5325180cfb8b3fffd */
1.327374757430096474625, /* 0x1.53ced504b2bd0fff4 */
1.329969819671041886272, /* 0x1.5478e6f02775e0001 */
1.332569955346704748651, /* 0x1.55234df9d8a59fff8 */
1.335175174370685002822, /* 0x1.55ce0a4c5a6a9fff6 */
1.337785486688218616860, /* 0x1.56791c1263abefff7 */
1.340400902247843806217, /* 0x1.57248376aef21fffa */
1.343021431036279800211, /* 0x1.57d040a420c0bfff3 */
1.345647083048053138662, /* 0x1.587c53c5a630f0002 */
1.348277868295411074918, /* 0x1.5928bd063fd7bfff9 */
1.350913796821875845231, /* 0x1.59d57c9110ad60006 */
1.353554878672557082439, /* 0x1.5a8292913d68cfffc */
1.356201123929036356254, /* 0x1.5b2fff3212db00007 */
1.358852542671913132777, /* 0x1.5bddc29edcc06fff3 */
1.361509145047255398051, /* 0x1.5c8bdd032ed16000f */
1.364170941142184734180, /* 0x1.5d3a4e8a5bf61fff4 */
1.366837941171020309735, /* 0x1.5de9176042f1effff */
1.369510155261156381121, /* 0x1.5e9837b062f4e0005 */
1.372187593620959988833, /* 0x1.5f47afa69436cfff1 */
1.374870266463378287715, /* 0x1.5ff77f6eb3f8cfffd */
1.377558184010425845733, /* 0x1.60a7a734a9742fff9 */
1.380251356531521533853, /* 0x1.6158272490016000c */
1.382949794301995272203, /* 0x1.6208ff6a8978a000f */
1.385653507605306700170, /* 0x1.62ba3032c0a280004 */
1.388362506772382154503, /* 0x1.636bb9a994784000f */
1.391076802081129493127, /* 0x1.641d9bfb29a7bfff6 */
1.393796403973427855412, /* 0x1.64cfd7545928b0002 */
1.396521322756352656542, /* 0x1.65826be167badfff8 */
1.399251568859207761660, /* 0x1.663559cf20826000c */
1.401987152677323100733, /* 0x1.66e8a14a29486fffc */
1.404728084651919228815, /* 0x1.679c427f5a4b6000b */
1.407474375243217723560, /* 0x1.68503d9ba0add000f */
1.410226034922914983815, /* 0x1.690492cbf6303fff9 */
1.412983074197955213304, /* 0x1.69b9423d7b548fff6 */
};
/* All floating-point numbers can be put in one of these categories. */
enum
{
FP_NAN,
# define FP_NAN FP_NAN
FP_INFINITE,
# define FP_INFINITE FP_INFINITE
FP_ZERO,
# define FP_ZERO FP_ZERO
FP_SUBNORMAL,
# define FP_SUBNORMAL FP_SUBNORMAL
FP_NORMAL
# define FP_NORMAL FP_NORMAL
};
int
__fpclassifyf (float x)
{
uint32_t wx;
int retval = FP_NORMAL;
GET_FLOAT_WORD (wx, x);
wx &= 0x7fffffff;
if (wx == 0)
retval = FP_ZERO;
else if (wx < 0x800000)
retval = FP_SUBNORMAL;
else if (wx >= 0x7f800000)
retval = wx > 0x7f800000 ? FP_NAN : FP_INFINITE;
return retval;
}
int
__isinff (float x)
{
int32_t ix,t;
GET_FLOAT_WORD(ix,x);
t = ix & 0x7fffffff;
t ^= 0x7f800000;
t |= -t;
return ~(t >> 31) & (ix >> 30);
}
/* Return nonzero value if arguments are unordered. */
#define fpclassify(x) \
(sizeof (x) == sizeof (float) ? __fpclassifyf (x) : __fpclassifyf (x))
#ifndef isunordered
#define isunordered(u, v) \
(__extension__ \
({ __typeof__(u) __u = (u); __typeof__(v) __v = (v); \
fpclassify (__u) == FP_NAN || fpclassify (__v) == FP_NAN; }))
#endif
/* Return nonzero value if X is less than Y. */
#ifndef isless
#define isless(x, y) \
(__extension__ \
({ __typeof__(x) __x = (x); __typeof__(y) __y = (y); \
!isunordered (__x, __y) && __x < __y; }))
#endif
/* Return nonzero value if X is greater than Y. */
#ifndef isgreater
#define isgreater(x, y) \
(__extension__ \
({ __typeof__(x) __x = (x); __typeof__(y) __y = (y); \
!isunordered (__x, __y) && __x > __y; }))
#endif
float rb_exp(float x)
{
static const float himark = 88.72283935546875;
static const float lomark = -103.972084045410;
/* Check for usual case. */
if (isless (x, himark) && isgreater (x, lomark))
{
static const float THREEp42 = 13194139533312.0;
static const float THREEp22 = 12582912.0;
/* 1/ln(2). */
#undef M_1_LN2
static const float M_1_LN2 = 1.44269502163f;
/* ln(2) */
#undef M_LN2
static const double M_LN2 = .6931471805599452862;
int tval;
double x22, t, result, dx;
float n, delta;
union ieee754_double ex2_u;
#ifndef ROCKBOX
fenv_t oldenv;
feholdexcept (&oldenv);
#endif
#ifdef FE_TONEAREST
fesetround (FE_TONEAREST);
#endif
/* Calculate n. */
n = x * M_1_LN2 + THREEp22;
n -= THREEp22;
dx = x - n*M_LN2;
/* Calculate t/512. */
t = dx + THREEp42;
t -= THREEp42;
dx -= t;
/* Compute tval = t. */
tval = (int) (t * 512.0);
if (t >= 0)
delta = - __exp_deltatable[tval];
else
delta = __exp_deltatable[-tval];
/* Compute ex2 = 2^n e^(t/512+delta[t]). */
ex2_u.d = __exp_atable[tval+177];
ex2_u.ieee.exponent += (int) n;
/* Approximate e^(dx+delta) - 1, using a second-degree polynomial,
with maximum error in [-2^-10-2^-28,2^-10+2^-28]
less than 5e-11. */
x22 = (0.5000000496709180453 * dx + 1.0000001192102037084) * dx + delta;
/* Return result. */
#ifndef ROCKBOX
fesetenv (&oldenv);
#endif
result = x22 * ex2_u.d + ex2_u.d;
return (float) result;
}
/* Exceptional cases: */
else if (isless (x, himark))
{
if (__isinff (x))
/* e^-inf == 0, with no error. */
return 0;
else
/* Underflow */
return TWOM100 * TWOM100;
}
else
/* Return x, if x is a NaN or Inf; or overflow, otherwise. */
return TWO127*x;
}
/* Power function, taken from glibc-2.8 and dietlibc-0.32 */
float pow_wrapper(float x, float y)
{
unsigned int e;
float result;
/* Special cases 0^x */
if(x == 0.0f)
{
if(y > 0.0f)
return 0.0f;
else if(y == 0.0f)
return 1.0f;
else
return 1.0f / x;
}
/* Special case x^n where n is integer */
if(y == (int) (e = (int) y))
{
if((int) e < 0)
{
e = -e;
x = 1.0f / x;
}
result = 1.0f;
while(1)
{
if(e & 1)
result *= x;
if((e >>= 1) == 0)
break;
x *= x;
}
return result;
}
/* Normal case */
return rb_exp(rb_log(x) * y);
}
double floor_wrapper(double n)
{
if(n < 0.0)
{
int y = (int)n;
return ((float)y == n) ? y : y - 1;
}
else
return (int)n;
}
double ceil_wrapper(double n)
{
return floor_wrapper(n) + 1.0;
}
/* Natural logarithm.
Taken from glibc-2.8 */
static const float
ln2_hi = 6.9313812256e-01, /* 0x3f317180 */
ln2_lo = 9.0580006145e-06, /* 0x3717f7d1 */
two25 = 3.355443200e+07, /* 0x4c000000 */
Lg1 = 6.6666668653e-01, /* 3F2AAAAB */
Lg2 = 4.0000000596e-01, /* 3ECCCCCD */
Lg3 = 2.8571429849e-01, /* 3E924925 */
Lg4 = 2.2222198546e-01, /* 3E638E29 */
Lg5 = 1.8183572590e-01, /* 3E3A3325 */
Lg6 = 1.5313838422e-01, /* 3E1CD04F */
Lg7 = 1.4798198640e-01; /* 3E178897 */
/* Get a 32 bit int from a float. */
#define GET_FLOAT_WORD(i,d) \
do { \
ieee_float_shape_type gf_u; \
gf_u.value = (d); \
(i) = gf_u.word; \
} while (0)
/* Set a float from a 32 bit int. */
#define SET_FLOAT_WORD(d,i) \
do { \
ieee_float_shape_type sf_u; \
sf_u.word = (i); \
(d) = sf_u.value; \
} while (0)
#ifdef ROCKBOX_LITTLE_ENDIAN
#define __HI(x) *(1+(int*)&x)
#define __LO(x) *(int*)&x
#define __HIp(x) *(1+(int*)x)
#define __LOp(x) *(int*)x
#else
#define __HI(x) *(int*)&x
#define __LO(x) *(1+(int*)&x)
#define __HIp(x) *(int*)x
#define __LOp(x) *(1+(int*)x)
#endif
float rb_log(float x)
{
float hfsq, f, s, z, R, w, t1, t2, dk;
int32_t k, ix, i, j;
GET_FLOAT_WORD(ix,x);
k=0;
if (ix < 0x00800000) { /* x < 2**-126 */
if ((ix&0x7fffffff)==0)
return -two25/(x-x); /* log(+-0)=-inf */
if (ix<0) return (x-x)/(x-x); /* log(-#) = NaN */
k -= 25; x *= two25; /* subnormal number, scale up x */
GET_FLOAT_WORD(ix,x);
}
if (ix >= 0x7f800000) return x+x;
k += (ix>>23)-127;
ix &= 0x007fffff;
i = (ix+(0x95f64<<3))&0x800000;
SET_FLOAT_WORD(x,ix|(i^0x3f800000)); /* normalize x or x/2 */
k += (i>>23);
f = x-(float)1.0;
if((0x007fffff&(15+ix))<16) { /* |f| < 2**-20 */
if(f==zero) {
if(k==0)
return zero;
else
{
dk=(float)k;
return dk*ln2_hi+dk*ln2_lo;
}
}
R = f*f*((float)0.5-(float)0.33333333333333333*f);
if(k==0)
return f-R;
else
{
dk=(float)k;
return dk*ln2_hi-((R-dk*ln2_lo)-f);
}
}
s = f/((float)2.0+f);
dk = (float)k;
z = s*s;
i = ix-(0x6147a<<3);
w = z*z;
j = (0x6b851<<3)-ix;
t1= w*(Lg2+w*(Lg4+w*Lg6));
t2= z*(Lg1+w*(Lg3+w*(Lg5+w*Lg7)));
i |= j;
R = t2+t1;
if(i>0) {
hfsq=(float)0.5*f*f;
if(k==0)
return f-(hfsq-s*(hfsq+R));
else
return dk*ln2_hi-((hfsq-(s*(hfsq+R)+dk*ln2_lo))-f);
} else {
if(k==0)
return f-s*(f-R);
else
return dk*ln2_hi-((s*(f-R)-dk*ln2_lo)-f);
}
}