1 /* e_scalbf.c -- float version of e_scalb.c.
2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
4 * $FreeBSD: src/lib/msun/src/e_scalbf.c,v 1.5 1999/08/28 00:06:38 peter Exp $
5 * $DragonFly: src/lib/msun/src/Attic/e_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 #include "math_private.h"
24 float __ieee754_scalbf(float x, int fn)
26 float __ieee754_scalbf(x,fn)
31 float __ieee754_scalbf(float x, float fn)
33 float __ieee754_scalbf(x,fn)
41 if (isnanf(x)||isnanf(fn)) return x*fn;
43 if(fn>(float)0.0) return x*fn;
46 if (rintf(fn)!=fn) return (fn-fn)/(fn-fn);
47 if ( fn > (float)65000.0) return scalbnf(x, 65000);
48 if (-fn > (float)65000.0) return scalbnf(x,-65000);
49 return scalbnf(x,(int)fn);