1 files changed, 13 insertions, 0 deletions
diff --git a/libraries/Ethernet/util.h b/libraries/Ethernet/util.h
new file mode 100644
index 0000000..220011b
--- /dev/null
+++ b/libraries/Ethernet/util.h
@@ -0,0 +1,13 @@
+#ifndef UTIL_H
+#define UTIL_H
+
+#define htons(x) ( (x)<<8 | ((x)>>8)&0xFF )
+#define ntohs(x) htons(x)
+
+#define htonl(x) ( ((x)<<24 & 0xFF000000UL) | \
+                   ((x)<< 8 & 0x00FF0000UL) | \
+                   ((x)>> 8 & 0x0000FF00UL) | \
+                   ((x)>>24 & 0x000000FFUL) )
+#define ntohl(x) htonl(x)
+
+#endif