From 3534b428629be185e096be99e3bd5fdfe32d5544 Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Thu, 18 Sep 2014 18:55:44 +0000
Subject: initial commit with rc for skalibs-2.0.0.0

---
 src/libstddjb/case_diffs.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 src/libstddjb/case_diffs.c

(limited to 'src/libstddjb/case_diffs.c')

diff --git a/src/libstddjb/case_diffs.c b/src/libstddjb/case_diffs.c
new file mode 100644
index 0000000..2731408
--- /dev/null
+++ b/src/libstddjb/case_diffs.c
@@ -0,0 +1,18 @@
+/* ISC license. */
+
+#include <skalibs/bytestr.h>
+
+int case_diffs (char const *s, char const *t)
+{
+  register unsigned char x = 1, y = 1 ;
+  unsigned char const d = 'a' - 'A' ;
+
+  while (x && (x == y))
+  {
+    x = *s++ ;
+    if (('a' <= x) && (x <= 'z')) x -= d ;
+    y = *t++ ;
+    if (('a' <= y) && (y <= 'z')) y -= d ;
+  }
+  return (int)(x - y) ;
+}
-- 
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