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typedef unsigned long ulong;
typedef unsigned int uint;
typedef unsigned short ushort;
typedef unsigned char uchar;
typedef signed char schar;
#include <float.h>
#include "mathi.h"
#define NANEXP (2047<<20)
#define NANMASK (2047<<20)
#define NANSIGN (1<<31)
int isInf(double, int);
double
NaN(void)
{
union
{
double d;
long x[2];
} a;
a.x[1] = NANEXP;
a.x[0] = 1;
return a.d;
}
int
isNaN(double d)
{
union
{
double d;
long x[2];
} a;
a.d = d;
if((a.x[1] & NANMASK) != NANEXP)
return 0;
return !isInf(d, 0);
}
double
Inf(int sign)
{
union
{
double d;
long x[2];
} a;
a.x[1] = NANEXP;
a.x[0] = 0;
if(sign < 0)
a.x[1] |= NANSIGN;
return a.d;
}
int
isInf(double d, int sign)
{
union
{
double d;
long x[2];
} a;
a.d = d;
if(a.x[0] != 0)
return 0;
if(a.x[1] == NANEXP)
return sign >= 0;
if(a.x[1] == (NANEXP|NANSIGN))
return sign <= 0;
return 0;
}
ulong
getfcr(void)
{
return getFPcontrol();
}
void
setfcr(ulong m)
{
FPcontrol(m, ~0);
}
ulong
getfsr(void)
{
return getFPstatus();
}
void
setfsr(ulong m)
{
FPstatus(m, ~0);
}
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