1 /* w_scalbf.c -- float version of w_scalb.c.
2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
4 * $FreeBSD: src/lib/msun/src/w_scalbf.c,v 1.5 1999/08/28 00:07:08 peter Exp $
5 * $DragonFly: src/lib/msun/src/Attic/w_scalbf.c,v 1.2 2003/06/17 04:26:53 dillon Exp $
9 * ====================================================
10 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
12 * Developed at SunPro, a Sun Microsystems, Inc. business.
13 * Permission to use, copy, modify, and distribute this
14 * software is freely granted, provided that this notice
16 * ====================================================
20 * wrapper scalbf(float x, float fn) is provide for
21 * passing various standard test suite. One
22 * should use scalbn() instead.
26 #include "math_private.h"
32 float scalbf(float x, int fn) /* wrapper scalbf */
34 float scalbf(float x, float fn) /* wrapper scalbf */
37 float scalbf(x,fn) /* wrapper scalbf */
46 return __ieee754_scalbf(x,fn);
49 z = __ieee754_scalbf(x,fn);
50 if(_LIB_VERSION == _IEEE_) return z;
51 if(!(finitef(z)||isnanf(z))&&finitef(x)) {
53 return (float)__kernel_standard((double)x,(double)fn,132);
55 if(z==(float)0.0&&z!=x) {
56 /* scalbf underflow */
57 return (float)__kernel_standard((double)x,(double)fn,133);
60 if(!finitef(fn)) errno = ERANGE;