From fd04aacee17b348da206c13a550dc1029669805f Mon Sep 17 00:00:00 2001
From: rsc <devnull@localhost>
Date: Sun, 23 Nov 2003 18:12:54 +0000
Subject: Various additions and fixes.

---
 src/lib9/cistrcmp.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 src/lib9/cistrcmp.c

(limited to 'src/lib9/cistrcmp.c')

diff --git a/src/lib9/cistrcmp.c b/src/lib9/cistrcmp.c
new file mode 100644
index 00000000..a545615b
--- /dev/null
+++ b/src/lib9/cistrcmp.c
@@ -0,0 +1,26 @@
+#include <u.h>
+#include <libc.h>
+
+int
+cistrcmp(char *s1, char *s2)
+{
+	int c1, c2;
+
+	while(*s1){
+		c1 = *(uchar*)s1++;
+		c2 = *(uchar*)s2++;
+
+		if(c1 == c2)
+			continue;
+
+		if(c1 >= 'A' && c1 <= 'Z')
+			c1 -= 'A' - 'a';
+
+		if(c2 >= 'A' && c2 <= 'Z')
+			c2 -= 'A' - 'a';
+
+		if(c1 != c2)
+			return c1 - c2;
+	}
+	return -*s2;
+}
-- 
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