--- ray/src/px/colorscale.c	1989/02/02 10:49:11	1.1
+++ ray/src/px/colorscale.c	2004/03/28 20:33:13	2.5
@@ -1,9 +1,6 @@
-/* Copyright (c) 1987 Regents of the University of California */
-
 #ifndef lint
-static char SCCSid[] = "$SunId$ LBL";
+static const char	RCSid[] = "$Id: colorscale.c,v 2.5 2004/03/28 20:33:13 schorsch Exp $";
 #endif
-
 /*
  *  colorscale.c - program to produce color pallets
  *
@@ -12,17 +9,23 @@ static char SCCSid[] = "$SunId$ LBL";
 
 #include  <stdio.h>
 
+#include  <math.h>
+
 #include  "color.h"
 
 int  primary = -1;
 double  prival = 0.0;
 
+static void colorscale(void);
+static void printargs(int  ac, char  **av, FILE  *fp);
 
-main(argc, argv)
-int  argc;
-char  *argv[];
+
+int
+main(
+	int  argc,
+	char  *argv[]
+)
 {
-	double  atof();
 	int  i;
 
 	for (i = 1; i < argc && argv[i][0] == '-'; i++)
@@ -55,7 +58,8 @@ userr:
 }
 
 
-colorscale()			/* output our color scale */
+static void
+colorscale(void)			/* output our color scale */
 {
 	COLOR  scanline[256];
 	int  j;
@@ -84,10 +88,12 @@ writerr:
 }
 
 
-printargs(ac, av, fp)		/* print arguments to a file */
-int  ac;
-char  **av;
-FILE  *fp;
+static void
+printargs(		/* print arguments to a file */
+	int  ac,
+	char  **av,
+	FILE  *fp
+)
 {
 	while (ac-- > 0) {
 		fputs(*av++, fp);