--- ray/src/gen/genmarble.c	1989/02/02 11:16:27	1.1
+++ ray/src/gen/genmarble.c	1993/08/02 14:23:03	2.4
@@ -12,21 +12,25 @@ static char SCCSid[] = "$SunId$ LBL";
 
 #include  <stdio.h>
 
+#include  <math.h>
+
 #include  "random.h"
 
-
 #define  PI	3.14159265359
 
 typedef double  FVECT[3];
 
 double  bubble();	/* pretty cute, huh? */
 
+#ifdef  DCL_ATOF
+extern double  atof();
+#endif
 
+
 main(argc, argv)
 int  argc;
 char  **argv;
 {
-	double  atof();
 	char  *cmtype, *cname;
 	FVECT  cent;
 	double  rad;
@@ -73,7 +77,6 @@ bubble(v, cent, rad, bubrad)	/* compute location of ra
 FVECT  v, cent;
 double  rad, bubrad;
 {
-	double  sqrt();
 	double  r, ro, theta, phi;
 
 	r = frandom()*bubrad;
@@ -90,7 +93,6 @@ sphere_cart(v, ro, theta, phi)	/* spherical to cartesi
 FVECT  v;
 double  ro, theta, phi;
 {
-	double  sin(), cos();
 	double  d;
 	
 	d = sin(phi);