written by Kirk McKusick; add Berkeley specific copyright notice

[unix-history] / usr / src / usr.bin / pascal / libpc / LN.c

/*-
* Copyright (c) 1979 The Regents of the University of California.
* All rights reserved.
*
* %sccs.include.redist.c%
*/

#ifndef lint
static char sccsid[] = "@(#)LN.c        1.6 (Berkeley) %G%";
#endif /* not lint */

#include <math.h>

double
LN(value)

       double  value;
{
       if (value <= 0) {
               ERROR("Non-positive argument of %e to ln\n", value);
       }
       return log(value);
}