glibc/sysdeps/ieee754/ldbl-96/s_isinf_nsl.c
2011-10-08 10:18:26 -04:00

19 lines
314 B
C

/*
* Written by Ulrich Drepper <drepper@gmail.com>.
*/
/*
* __isinf_nsl(x) returns != 0 if x is ±inf, else 0;
*/
#include "math.h"
#include "math_private.h"
int
__isinf_nsl (long double x)
{
int32_t se,hx,lx;
GET_LDOUBLE_WORDS(se,hx,lx,x);
return !(((se & 0x7fff) ^ 0x7fff) | lx | (hx & 0x7fffffff));
}