| |
| /* @(#)s_finite.c 1.3 95/01/18 */ |
| /* |
| * ==================================================== |
| * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
| * |
| * Developed at SunSoft, a Sun Microsystems, Inc. business. |
| * Permission to use, copy, modify, and distribute this |
| * software is freely granted, provided that this notice |
| * is preserved. |
| * ==================================================== |
| */ |
| |
| /* |
| * ieee_finite(x) returns 1 is x is finite, else 0; |
| * no branching! |
| */ |
| |
| #include "fdlibm.h" |
| |
| #ifdef __STDC__ |
| int ieee_finite(double x) |
| #else |
| int ieee_finite(x) |
| double x; |
| #endif |
| { |
| int hx; |
| hx = __HI(x); |
| return (unsigned)((hx&0x7fffffff)-0x7ff00000)>>31; |
| } |
