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 #include <sys/cdefs.h> 17 #if defined(LIBM_SCCS) && !defined(lint) 18 __RCSID("$NetBSD: s_finitef.c,v 1.6 1999/07/02 15:37:42 simonb Exp $"); 19 #endif 20 21 /* 22 * finitef(x) returns 1 is x is finite, else 0; 23 * no branching! 24 */ 25 26 #include "math.h" 27 #include "math_private.h" 28 29 #ifdef __STDC__ 30 int finitef(float x) 31 #else 32 int finitef(x) 33 float x; 34 #endif 35 { 36 int32_t ix; 37 GET_FLOAT_WORD(ix,x); 38 return (int)((u_int32_t)((ix&0x7fffffff)-0x7f800000)>>31); 39 } 40