kolibrios/programs/develop/libraries/menuetlibc/src/libm/w_log10.c
right-hearted 6496d04506 Adding menuetlibc back to its place in /programs/develop/libraries
This version of menuetlibc was taken from revision 4743, right before I made any changes

git-svn-id: svn://kolibrios.org@4973 a494cfbc-eb01-0410-851d-a64ba20cac60
2014-06-12 10:43:21 +00:00

48 lines
1.1 KiB
C

/* Copyright (C) 1994 DJ Delorie, see COPYING.DJ for details */
/* @(#)w_log10.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[] = "$Id: w_log10.c,v 1.4 1994/08/10 20:35:15 jtc Exp $";
#endif
/*
* wrapper log10(X)
*/
#include "math.h"
#include "math_private.h"
#ifdef __STDC__
double log10(double x) /* wrapper log10 */
#else
double log10(x) /* wrapper log10 */
double x;
#endif
{
#ifdef _IEEE_LIBM
return __ieee754_log10(x);
#else
double z;
z = __ieee754_log10(x);
if(_LIB_VERSION == _IEEE_ || isnan(x)) return z;
if(x<=0.0) {
if(x==0.0)
return __kernel_standard(x,x,18); /* log10(0) */
else
return __kernel_standard(x,x,19); /* log10(x<0) */
} else
return z;
#endif
}