From: Ben Pfaff <blp@cs.stanford.edu>
Date: Tue, 7 Sep 2004 23:47:31 +0000 (+0000)
Subject: Add tolower(), toupper().
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?p=pintos-anon;a=commitdiff_plain;h=b30b093dee7671ccb8c30218d78449c542a6bfec

Add tolower(), toupper().
---

diff --git a/src/lib/ctype.h b/src/lib/ctype.h
index 71b432c..adc96be 100644
--- a/src/lib/ctype.h
+++ b/src/lib/ctype.h
@@ -22,4 +22,7 @@ static inline int ispunct (int c) {
   return isprint (c) && !isalnum (c) && !isspace (c);
 }
 
+static inline int tolower (int c) { return isupper (c) ? c - 'A' + 'a' : c; }
+static inline int toupper (int c) { return islower (c) ? c - 'a' + 'A' : c; }
+
 #endif /* lib/ctype.h */