diff --git a/types.h b/types.h
new file mode 100644
index 00000000..a9d28132
--- /dev/null
+++ b/types.h
@@ -0,0 +1,25 @@
+/*
+** TeCGraf - PUC-Rio
+** $Id: $
+*/
+
+#ifndef types_h
+#define types_h
+
+#ifndef real
+#define real float
+#endif
+
+typedef int Bool;  /* boolean values */
+
+typedef unsigned char  Byte;  /* unsigned 8 bits */
+
+typedef unsigned short Word;  /* unsigned 16 bits */
+
+#define MAX_WORD  0xFFFD  /* maximum value of a word (FFFF-2 for safety) */
+
+typedef signed long  Long;  /* 32 bits */
+
+typedef unsigned int IntPoint; /* unsigned with same size as a pointer (for hashing) */
+
+#endif