--- ray/src/gen/genworm.c	1991/08/13 16:07:12	1.9
+++ ray/src/gen/genworm.c	1993/01/05 10:06:59	2.2
@@ -15,7 +15,7 @@ static char SCCSid[] = "$SunId$ LBL";
  */
 
 #include  <stdio.h>
-
+#include  <math.h>
 #include  "fvect.h"
 
 #define  XNAME		"X`SYS`"		/* x function name */
@@ -24,8 +24,6 @@ static char SCCSid[] = "$SunId$ LBL";
 #define  RNAME		"R`SYS`"		/* r function name */
 
 #define  PI		3.14159265358979323846
-
-#define  FTINY		1e-7
 
 #define  max(a,b)	((a) > (b) ? (a) : (b))