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6d0c49145e
* sysdeps/i386/fpu/e_scalb.S: Handle NaN as first parameter correctly. * sysdeps/i386/fpu/e_scalbf.S: Likewise. * sysdeps/i386/fpu/e_scalbl.S: Likewise. * math/w_scalb.c: Don't use matherr except in SVID mode. * math/w_scalbf.c: Likewise. * math/w_scalbl.c: Likewise. * math/test-misc.c: Add test for NaN and scalbl. Reported by Fred J. Tydeman <tydeman@tybor.com>. 2000-12-04 Ulrich Drepper <drepper@redhat.com>
66 lines
1.6 KiB
C
66 lines
1.6 KiB
C
/* w_scalbl.c -- long double version of w_scalb.c.
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* Conversion to long double by Ulrich Drepper,
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* Cygnus Support, drepper@cygnus.com.
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*/
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/*
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* ====================================================
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* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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*
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* Developed at SunPro, a Sun Microsystems, Inc. business.
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* Permission to use, copy, modify, and distribute this
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* software is freely granted, provided that this notice
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* is preserved.
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* ====================================================
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*/
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#if defined(LIBM_SCCS) && !defined(lint)
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static char rcsid[] = "$NetBSD: $";
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#endif
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/*
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* wrapper scalbl(long double x, long double fn) is provide for
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* passing various standard test suite. One
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* should use scalbnl() instead.
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*/
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#include "math.h"
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#include "math_private.h"
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#include <errno.h>
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#ifdef __STDC__
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#ifdef _SCALB_INT
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long double __scalbl(long double x, int fn) /* wrapper scalbl */
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#else
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long double __scalbl(long double x, long double fn)/* wrapper scalbl */
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#endif
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#else
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long double __scalbl(x,fn) /* wrapper scalbl */
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#ifdef _SCALB_INT
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long double x; int fn;
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#else
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long double x,fn;
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#endif
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#endif
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{
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#ifdef _IEEE_LIBM
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return __ieee754_scalbl(x,fn);
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#else
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long double z;
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z = __ieee754_scalbl(x,fn);
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if(_LIB_VERSION != _SVID_) return z;
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if(!(__finitel(z)||__isnanl(z))&&__finitel(x)) {
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return __kernel_standard(x,(double)fn,232); /* scalb overflow */
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}
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if(z==0.0&&z!=x) {
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return __kernel_standard(x,(double)fn,233); /* scalb underflow */
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}
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#ifndef _SCALB_INT
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if(!__finitel(fn)) __set_errno (ERANGE);
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#endif
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return z;
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#endif
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}
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weak_alias (__scalbl, scalbl)
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