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 * ====================================================
16 #if defined(LIBM_SCCS) && !defined(lint)
17 static char rcsid[] = "$NetBSD: e_scalbf.c,v 1.3 1995/05/10 20:46:12 jtc Exp $";
22 #include "math_private.h"
26 float __ieee754_scalbf(float x, int fn)
28 float __ieee754_scalbf(x,fn)
33 float __ieee754_scalbf(float x, float fn)
35 float __ieee754_scalbf(x,fn)
41 return __scalbnf(x,fn);
43 if (__isnanf(x)||__isnanf(fn)) return x*fn;
45 if(fn>(float)0.0) return x*fn;
48 else if (!__finitef (x))
51 feraiseexcept (FE_INVALID);
60 feraiseexcept (FE_INVALID);
64 if ( fn > (float)65000.0) return __scalbnf(x, 65000);
65 if (-fn > (float)65000.0) return __scalbnf(x,-65000);
66 return __scalbnf(x,(int)fn);