glibc/sysdeps/ieee754/ldbl-128/w_expl.c
Andreas Krebbel 7beb48cbb7 [BZ #16427] Fix ldbl-128 exp overflows.
Invoke the non-IEEE handling only for numbers special also in the IEEE
case.  This aligns the exp handling with the other ldbl variants.
2014-01-15 09:50:31 +01:00

43 lines
1.0 KiB
C

/* w_expl.c -- long double version of w_exp.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 expl(x)
*/
#include <math.h>
#include <math_private.h>
long double __expl(long double x) /* wrapper exp */
{
#ifdef _IEEE_LIBM
return __ieee754_expl(x);
#else
long double z = __ieee754_expl (x);
if (__glibc_unlikely (!__finitel (z) || z == 0)
&& __finitel (x) && _LIB_VERSION != _IEEE_)
return __kernel_standard_l (x, x, 206 + !!__signbitl (x));
return z;
#endif
}
hidden_def (__expl)
weak_alias (__expl, expl)