1 /* e_scalbf.c -- float version of e_scalb.c.
2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
6 * ====================================================
7 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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
13 * ====================================================
17 static char rcsid[] = "$FreeBSD: src/lib/msun/src/e_scalbf.c,v 1.5 1999/08/28 00:06:38 peter Exp $";
21 #include "math_private.h"
25 float __ieee754_scalbf(float x, int fn)
27 float __ieee754_scalbf(x,fn)
32 float __ieee754_scalbf(float x, float fn)
34 float __ieee754_scalbf(x,fn)
42 if (isnanf(x)||isnanf(fn)) return x*fn;
44 if(fn>(float)0.0) return x*fn;
47 if (rintf(fn)!=fn) return (fn-fn)/(fn-fn);
48 if ( fn > (float)65000.0) return scalbnf(x, 65000);
49 if (-fn > (float)65000.0) return scalbnf(x,-65000);
50 return scalbnf(x,(int)fn);