fixes

src/cmd/tpic/input.c

@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <math.h>
 #include <ctype.h>
 #include <errno.h>
 #include "pic.h"
@@ -511,7 +512,7 @@ struct symtab*
 copythru(char *s)	/* collect the macro name or body for thru */
 {
 	struct symtab *p;
-	char *q, *addnewline();
+	char *q;
 
 	p = lookup(s);
 	if (p != NULL) {

src/cmd/tpic/linegen.c

@@ -1,3 +1,4 @@
+#include	<math.h>
 #include	<stdio.h>
 #include	"pic.h"
 #include	"y.tab.h"
@@ -11,7 +12,7 @@ linegen(int type)
 	static double prevh = HT5;
 	int i, j, some, head, ddtype, invis, chop;
 	double ddval, chop1, chop2, x0, y0, x1, y1;
-	double sin(), cos(), atan2(), theta;
+	double theta;
 	double defx, defy;
 	obj *p, *ppos;
 	static int xtab[] = { 1, 0, -1, 0 };	/* R=0, U=1, L=2, D=3 */

src/cmd/tpic/misc.c

@@ -369,7 +369,7 @@ getfirst(int n, int t)	/* find n-th occurrence of type t */
 double
 getblkvar(obj *p, char *s)	/* find variable s2 in block p */
 {
-	YYSTYPE y, getblk();
+	YYSTYPE y;
 
 	y = getblk(p, s);
 	return y.f;
@@ -378,7 +378,7 @@ getblkvar(obj *p, char *s)	/* find variable s2 in block p */
 obj*
 getblock(obj *p, char *s)	/* find variable s in block p */
 {
-	YYSTYPE y, getblk();
+	YYSTYPE y;
 
 	y = getblk(p, s);
 	return y.o;