--- ray/src/common/bsdf.c	2011/06/09 17:09:39	2.30
+++ ray/src/common/bsdf.c	2011/06/10 01:11:26	2.31
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char RCSid[] = "$Id: bsdf.c,v 2.30 2011/06/09 17:09:39 greg Exp $";
+static const char RCSid[] = "$Id: bsdf.c,v 2.31 2011/06/10 01:11:26 greg Exp $";
 #endif
 /*
  *  bsdf.c
@@ -13,6 +13,7 @@ static const char RCSid[] = "$Id: bsdf.c,v 2.30 2011/0
 #define	_USE_MATH_DEFINES
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <math.h>
 #include "ezxml.h"
 #include "hilbert.h"