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[glibc/history.git] / math / w_logl.c
blob5a38f2003807f765f59294afdbcf91f3f6085c9f
1 /* w_logl.c -- long double version of w_log.c.
2 * Conversion to long double by Ulrich Drepper,
3 * Cygnus Support, drepper@cygnus.com.
4 */
6 /*
7 * ====================================================
8 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
10 * Developed at SunPro, a Sun Microsystems, Inc. business.
11 * Permission to use, copy, modify, and distribute this
12 * software is freely granted, provided that this notice
13 * is preserved.
14 * ====================================================
17 #if defined(LIBM_SCCS) && !defined(lint)
18 static char rcsid[] = "$NetBSD: $";
19 #endif
22 * wrapper logl(x)
25 #include <math.h>
26 #include "math_private.h"
29 #ifdef __STDC__
30 long double __logl(long double x) /* wrapper logl */
31 #else
32 long double __logl(x) /* wrapper logl */
33 long double x;
34 #endif
36 #ifdef _IEEE_LIBM
37 return __ieee754_logl(x);
38 #else
39 long double z;
40 z = __ieee754_logl(x);
41 if(_LIB_VERSION == _IEEE_ || __isnanl(x) || x > 0.0) return z;
42 if(x==0.0)
43 return __kernel_standard(x,x,216); /* log(0) */
44 else
45 return __kernel_standard(x,x,217); /* log(x<0) */
46 #endif
48 weak_alias (__logl, logl)