From b732a73bc773789894466b0e5320b2f1fe42c7e9 Mon Sep 17 00:00:00 2001 From: John Denker Date: Fri, 1 Jun 2012 18:58:45 -0700 Subject: original, as downloaded from http://www.qmail.org/netqmail-1.06.tar.gz --- str_diffn.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 str_diffn.c (limited to 'str_diffn.c') diff --git a/str_diffn.c b/str_diffn.c new file mode 100644 index 0000000..89142f1 --- /dev/null +++ b/str_diffn.c @@ -0,0 +1,18 @@ +#include "str.h" + +int str_diffn(s,t,len) +register char *s; +register char *t; +unsigned int len; +{ + register char x; + + for (;;) { + if (!len--) return 0; x = *s; if (x != *t) break; if (!x) break; ++s; ++t; + if (!len--) return 0; x = *s; if (x != *t) break; if (!x) break; ++s; ++t; + if (!len--) return 0; x = *s; if (x != *t) break; if (!x) break; ++s; ++t; + if (!len--) return 0; x = *s; if (x != *t) break; if (!x) break; ++s; ++t; + } + return ((int)(unsigned int)(unsigned char) x) + - ((int)(unsigned int)(unsigned char) *t); +} -- cgit v1.2.3