1 /* s_finitef.c -- float version of s_finite.c. 2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. 3 */ 4 5 /* 6 * ==================================================== 7 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. 8 * 9 * Developed at SunPro, a Sun Microsystems, Inc. business. 10 * Permission to use, copy, modify, and distribute this 11 * software is freely granted, provided that this notice 12 * is preserved. 13 * ==================================================== 14 */ 15 16 #if defined(LIBM_SCCS) && !defined(lint) 17 static char rcsid[] = "$NetBSD: s_finitef.c,v 1.4 1995/05/10 20:47:18 jtc Exp $"; 18 #endif 19 20 /* 21 * finitef(x) returns 1 is x is finite, else 0; 22 * no branching! 23 */ 24 25 #include "math.h" 26 #include "math_private.h" 27 28 #ifdef __STDC__ 29 int __finitef(float x) 30 #else 31 int __finitef(x) 32 float x; 33 #endif 34 { 35 int32_t ix; 36 GET_FLOAT_WORD(ix,x); 37 return (int)((u_int32_t)((ix&0x7fffffff)-0x7f800000)>>31); 38 } 39 hidden_def (__finitef) 40 weak_alias (__finitef, finitef) 41