1 /*- 2 * Copyright (c) 1979, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 static char sccsid[] = "@(#)LN.c 8.1 (Berkeley) 06/06/93"; 10 #endif /* not lint */ 11 12 #include <math.h> 13 14 double 15 LN(value) 16 17 double value; 18 { 19 if (value <= 0) { 20 ERROR("Non-positive argument of %e to ln\n", value); 21 } 22 return log(value); 23 } 24