1 files changed, 3 insertions, 1 deletions
diff --git a/snc.h b/snc.h
index b100151..9b02b51 100644
--- a/snc.h
+++ b/snc.h
@@ -27,7 +27,9 @@ enum {
 	SNC_ROMAN_L = 50,
 	SNC_ROMAN_C = 100,
 	SNC_ROMAN_D = 500,
-	SNC_ROMAN_M = 1000
+	SNC_ROMAN_M = 1000,
+	SNC_ROMAN_MAX_NUMBER = 3999,
+	SNC_ROMAN_MAXLEN = 15 // MMMDCCCLXXXVIII
 };
 
 #endif /* SNC_NUMBERS_H */