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| author | Ulrich Drepper <drepper@redhat.com> | 1999-07-14 00:54:57 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 1999-07-14 00:54:57 +0000 |
| commit | abfbdde177c3a7155070dda1b2cdc8292054cc26 (patch) | |
| tree | e021306b596381fbf8311d2b7eb294e918ff17c8 /math/w_log.c | |
| parent | 86421aa57ecfd70963ae66848bd6a6dd3b8e0fe6 (diff) | |
| download | glibc-abfbdde177c3a7155070dda1b2cdc8292054cc26.tar.gz glibc-abfbdde177c3a7155070dda1b2cdc8292054cc26.tar.xz glibc-abfbdde177c3a7155070dda1b2cdc8292054cc26.zip | |
Update.
Diffstat (limited to 'math/w_log.c')
| -rw-r--r-- | math/w_log.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/math/w_log.c b/math/w_log.c new file mode 100644 index 0000000000..5f0af79731 --- /dev/null +++ b/math/w_log.c @@ -0,0 +1,48 @@ +/* @(#)w_log.c 5.1 93/09/24 */ +/* + * ==================================================== + * 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: w_log.c,v 1.6 1995/05/10 20:49:33 jtc Exp $"; +#endif + +/* + * wrapper log(x) + */ + +#include "math.h" +#include "math_private.h" + + +#ifdef __STDC__ + double __log(double x) /* wrapper log */ +#else + double __log(x) /* wrapper log */ + double x; +#endif +{ +#ifdef _IEEE_LIBM + return __ieee754_log(x); +#else + double z; + z = __ieee754_log(x); + if(_LIB_VERSION == _IEEE_ || __isnan(x) || x > 0.0) return z; + if(x==0.0) + return __kernel_standard(x,x,16); /* log(0) */ + else + return __kernel_standard(x,x,17); /* log(x<0) */ +#endif +} +weak_alias (__log, log) +#ifdef NO_LONG_DOUBLE +strong_alias (__log, __logl) +weak_alias (__log, logl) +#endif |