mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-23 13:30:06 +00:00
66 lines
1.6 KiB
C
66 lines
1.6 KiB
C
/* w_scalbl.c -- long double version of w_scalb.c.
|
|
* Conversion to long double by Ulrich Drepper,
|
|
* Cygnus Support, drepper@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: $";
|
|
#endif
|
|
|
|
/*
|
|
* wrapper scalbl(long double x, long double fn) is provide for
|
|
* passing various standard test suite. One
|
|
* should use scalbnl() instead.
|
|
*/
|
|
|
|
#include "math.h"
|
|
#include "math_private.h"
|
|
|
|
#include <errno.h>
|
|
|
|
#ifdef __STDC__
|
|
#ifdef _SCALB_INT
|
|
long double __scalbl(long double x, int fn) /* wrapper scalbl */
|
|
#else
|
|
long double __scalbl(long double x, long double fn)/* wrapper scalbl */
|
|
#endif
|
|
#else
|
|
long double __scalbl(x,fn) /* wrapper scalbl */
|
|
#ifdef _SCALB_INT
|
|
long double x; int fn;
|
|
#else
|
|
long double x,fn;
|
|
#endif
|
|
#endif
|
|
{
|
|
#ifdef _IEEE_LIBM
|
|
return __ieee754_scalbl(x,fn);
|
|
#else
|
|
long double z;
|
|
z = __ieee754_scalbl(x,fn);
|
|
if(_LIB_VERSION == _IEEE_) return z;
|
|
if(!(__finitel(z)||__isnanl(z))&&__finitel(x)) {
|
|
return __kernel_standard(x,(double)fn,232); /* scalb overflow */
|
|
}
|
|
if(z==0.0&&z!=x) {
|
|
return __kernel_standard(x,(double)fn,233); /* scalb underflow */
|
|
}
|
|
#ifndef _SCALB_INT
|
|
if(!__finitel(fn)) __set_errno (ERANGE);
|
|
#endif
|
|
return z;
|
|
#endif
|
|
}
|
|
weak_alias (__scalbl, scalbl)
|