diff options
author | John Denker <jsd@av8n.com> | 2012-06-01 18:58:45 -0700 |
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committer | John Denker <jsd@av8n.com> | 2012-06-01 18:58:45 -0700 |
commit | b732a73bc773789894466b0e5320b2f1fe42c7e9 (patch) | |
tree | 385358983f064a1f10a5080b33a3ba13010886db /str_diffn.c | |
parent | 634d365a03cb0581a062cd3cf4db9ae69f1cde26 (diff) |
original, as downloaded from http://www.qmail.org/netqmail-1.06.tar.gz
Diffstat (limited to 'str_diffn.c')
-rw-r--r-- | str_diffn.c | 18 |
1 files changed, 18 insertions, 0 deletions
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); +} |