win32 portability patch and win32/rrdlib.vcproj file for the source

[rrdtool.git] / src / rrd_diff.c

diff --git a/src/rrd_diff.c b/src/rrd_diff.c
index 093a293..2b5cb66 100644 (file)
--- a/src/rrd_diff.c
+++ b/src/rrd_diff.c
@@ -35,6 +35,7 @@
  *
  *****************************************************************************/
 
+#include <ctype.h>
 #include "rrd_tool.h"
 
 double rrd_diff(