Commit | Line | Data |
---|---|---|
2117e02e MW |
1 | #include "str.h" |
2 | ||
3 | int str_diffn(s,t,len) | |
4 | register char *s; | |
5 | register char *t; | |
6 | unsigned int len; | |
7 | { | |
8 | register char x; | |
9 | ||
10 | for (;;) { | |
11 | if (!len--) return 0; x = *s; if (x != *t) break; if (!x) break; ++s; ++t; | |
12 | if (!len--) return 0; x = *s; if (x != *t) break; if (!x) break; ++s; ++t; | |
13 | if (!len--) return 0; x = *s; if (x != *t) break; if (!x) break; ++s; ++t; | |
14 | if (!len--) return 0; x = *s; if (x != *t) break; if (!x) break; ++s; ++t; | |
15 | } | |
16 | return ((int)(unsigned int)(unsigned char) x) | |
17 | - ((int)(unsigned int)(unsigned char) *t); | |
18 | } |