2017-09-06 23:48:41 +08:00
|
|
|
/* w_expl.c -- long double version of w_exp.c.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* ====================================================
|
|
|
|
|
* 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)
|
|
|
|
|
*/
|
|
|
|
|
|
1999-07-14 08:54:57 +08:00
|
|
|
#include <math.h>
|
2017-09-06 23:48:41 +08:00
|
|
|
#include <math_private.h>
|
|
|
|
|
#include <math-svid-compat.h>
|
2017-09-19 01:51:33 +08:00
|
|
|
#include <libm-alias-ldouble.h>
|
1999-07-14 08:54:57 +08:00
|
|
|
|
2017-09-06 23:48:41 +08:00
|
|
|
#if LIBM_SVID_COMPAT
|
|
|
|
|
long double __expl(long double x) /* wrapper exp */
|
1999-07-14 08:54:57 +08:00
|
|
|
{
|
2017-09-06 23:48:41 +08:00
|
|
|
# ifdef _IEEE_LIBM
|
|
|
|
|
return __ieee754_expl(x);
|
|
|
|
|
# else
|
|
|
|
|
long double z = __ieee754_expl (x);
|
|
|
|
|
if (__glibc_unlikely (!isfinite (z) || z == 0)
|
|
|
|
|
&& isfinite (x) && _LIB_VERSION != _IEEE_)
|
|
|
|
|
return __kernel_standard_l (x, x, 206 + !!signbit (x));
|
1999-07-14 08:54:57 +08:00
|
|
|
|
2017-09-06 23:48:41 +08:00
|
|
|
return z;
|
|
|
|
|
# endif
|
|
|
|
|
}
|
2018-04-30 22:45:42 +08:00
|
|
|
libm_hidden_def (__expl)
|
2017-09-19 01:51:33 +08:00
|
|
|
libm_alias_ldouble (__exp, exp)
|
2017-09-06 23:48:41 +08:00
|
|
|
#endif
|
