--- ray/src/common/portio.c	2003/02/25 02:47:21	2.7
+++ ray/src/common/portio.c	2004/09/14 02:53:50	2.11
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: portio.c,v 2.7 2003/02/25 02:47:21 greg Exp $";
+static const char	RCSid[] = "$Id: portio.c,v 2.11 2004/09/14 02:53:50 greg Exp $";
 #endif
 /*
  * Portable i/o for binary files
@@ -11,11 +11,15 @@ static const char	RCSid[] = "$Id: portio.c,v 2.7 2003/
 
 #include <stdio.h>
 
-#ifndef frexp
-extern double  frexp();
-#endif
-#ifndef ldexp
-extern double  ldexp();
+#include "rtio.h"
+
+#include <math.h>
+
+#ifdef getc_unlocked		/* avoid horrendous overhead of flockfile */
+#undef getc
+#undef putc
+#define getc    getc_unlocked
+#define putc    putc_unlocked
 #endif