1/* e_scalbf.c -- float version of e_scalb.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__FBSDID("$FreeBSD$");
18
19#include "math.h"
20#include "math_private.h"
21
22#ifdef _SCALB_INT
23float
24__ieee754_scalbf(float x, int fn)
25#else
26float
27__ieee754_scalbf(float x, float fn)
28#endif
29{
30#ifdef _SCALB_INT
31	return scalbnf(x,fn);
32#else
33	if ((isnanf)(x)||(isnanf)(fn)) return x*fn;
34	if (!finitef(fn)) {
35	    if(fn>(float)0.0) return x*fn;
36	    else       return x/(-fn);
37	}
38	if (rintf(fn)!=fn) return (fn-fn)/(fn-fn);
39	if ( fn > (float)65000.0) return scalbnf(x, 65000);
40	if (-fn > (float)65000.0) return scalbnf(x,-65000);
41	return scalbnf(x,(int)fn);
42#endif
43}
44