--- ray/src/common/portio.c	1992/07/13 15:36:01	2.1
+++ ray/src/common/portio.c	1992/10/02 16:09:57	2.3
@@ -10,7 +10,14 @@ static char SCCSid[] = "$SunId$ LBL";
 
 #include <stdio.h>
 
+#ifndef frexp
+extern double  frexp();
+#endif
+#ifndef ldexp
+extern double  ldexp();
+#endif
 
+
 putstr(s, fp)			/* write null-terminated string to fp */
 register char  *s;
 register FILE  *fp;
@@ -27,14 +34,14 @@ register int  siz;
 register FILE  *fp;
 {
 	while (siz--)
-		putc(i>>(siz<<3) & 0xff, fp);
+		putc((int)(i>>(siz<<3) & 0xff), fp);
 }
 
 
 putflt(f, fp)			/* put out floating point number */
-double  f;
+double	f;
+FILE  *fp;
 {
-	extern double  frexp();
 	int  e;
 
 	putint((long)(frexp(f,&e)*0x7fffffff), 4, fp);
@@ -84,8 +91,7 @@ double
 getflt(fp)			/* get a floating point number */
 FILE  *fp;
 {
-	extern double  ldexp();
-	double  d;
+	double	d;
 
 	d = (double)getint(4, fp)/0x7fffffff;
 	return(ldexp(d, (int)getint(1, fp)));