diff --git a/iso646.h b/iso646.h
new file mode 100644
index 0000000..70a939d
--- /dev/null
+++ b/iso646.h
@@ -0,0 +1,16 @@
+#ifndef __ISO646_H__
+#define __ISO646_H__
+
+#define and &&
+#define and_eq &=
+#define bitand &
+#define bitor |
+#define compl ~
+#define not !
+#define not_eq !=
+#define or ||
+#define or_eq |=
+#define xor ^
+#define xor_eq ^=
+
+#endif