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authorJohn Denker <jsd@av8n.com>2012-06-02 01:58:45 (GMT)
committerJohn Denker <jsd@av8n.com>2012-06-02 01:58:45 (GMT)
commitb732a73bc773789894466b0e5320b2f1fe42c7e9 (patch)
tree385358983f064a1f10a5080b33a3ba13010886db /byte_diff.c
parent634d365a03cb0581a062cd3cf4db9ae69f1cde26 (diff)
original, as downloaded from http://www.qmail.org/netqmail-1.06.tar.gz
Diffstat (limited to 'byte_diff.c')
-rw-r--r--byte_diff.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/byte_diff.c b/byte_diff.c
new file mode 100644
index 0000000..cdbd760
--- /dev/null
+++ b/byte_diff.c
@@ -0,0 +1,16 @@
+#include "byte.h"
+
+int byte_diff(s,n,t)
+register char *s;
+register unsigned int n;
+register char *t;
+{
+ for (;;) {
+ if (!n) return 0; if (*s != *t) break; ++s; ++t; --n;
+ if (!n) return 0; if (*s != *t) break; ++s; ++t; --n;
+ if (!n) return 0; if (*s != *t) break; ++s; ++t; --n;
+ if (!n) return 0; if (*s != *t) break; ++s; ++t; --n;
+ }
+ return ((int)(unsigned int)(unsigned char) *s)
+ - ((int)(unsigned int)(unsigned char) *t);
+}