--- ray/src/common/zeroes.c	1991/11/12 17:08:54	2.1
+++ ray/src/common/zeroes.c	1992/10/02 16:21:08	2.2
@@ -10,15 +10,17 @@ static char SCCSid[] = "$SunId$ LBL";
  *     8/19/85
  */
 
-#define  FTINY		1e-7
 
+#include  <math.h>
 
+#include  "fvect.h"
+
+
 int
 quadratic(r, a, b, c)		/* find real roots of quadratic equation */
 double  *r;			/* roots in ascending order */
 double  a, b, c; 
 {
-	double  fabs(), sqrt();
 	double  disc;
 	int  first;