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/* w_scalbf.c -- float version of w_scalb.c.
* Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
*/
/*
* ====================================================
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
*
* Developed at SunPro, a Sun Microsystems, Inc. business.
* Permission to use, copy, modify, and distribute this
* software is freely granted, provided that this notice
* is preserved.
* ====================================================
*/
#if defined(LIBM_SCCS) && !defined(lint)
static char rcsid[] = "$NetBSD: w_scalbf.c,v 1.3 1995/05/10 20:49:50 jtc Exp $";
#endif
/*
* wrapper scalbf(float x, float fn) is provide for
* passing various standard test suite. One
* should use scalbn() instead.
*/
#include "math.h"
#include "math_private.h"
#include <errno.h>
#ifdef __STDC__
#ifdef _SCALB_INT
float __scalbf(float x, int fn) /* wrapper scalbf */
#else
float __scalbf(float x, float fn) /* wrapper scalbf */
#endif
#else
float __scalbf(x,fn) /* wrapper scalbf */
#ifdef _SCALB_INT
float x; int fn;
#else
float x,fn;
#endif
#endif
{
#ifdef _IEEE_LIBM
return __ieee754_scalbf(x,fn);
#else
float z;
z = __ieee754_scalbf(x,fn);
if(_LIB_VERSION == _IEEE_) return z;
if(!(__finitef(z)||__isnanf(z))&&__finitef(x)) {
/* scalbf overflow */
return (float)__kernel_standard((double)x,(double)fn,132);
}
if(z==(float)0.0&&z!=x) {
/* scalbf underflow */
return (float)__kernel_standard((double)x,(double)fn,133);
}
#ifndef _SCALB_INT
if(!__finitef(fn)) __set_errno (ERANGE);
#endif
return z;
#endif
}
weak_alias (__scalbf, scalbf)
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