diff options
Diffstat (limited to 'src/libstddjb/str_diff.c')
| -rw-r--r-- | src/libstddjb/str_diff.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/libstddjb/str_diff.c b/src/libstddjb/str_diff.c new file mode 100644 index 0000000..b85288a --- /dev/null +++ b/src/libstddjb/str_diff.c @@ -0,0 +1,24 @@ +/* ISC license. */ + +#include <skalibs/config.h> + +#ifdef SKALIBS_FLAG_REPLACE_LIBC + +#include <skalibs/bytestr.h> + +int str_diff (register char const *s, register char const *t) +{ + register char x ; + + for (;;) + { + x = *s; if (x != *t) break; if (!x) break; ++s; ++t; + x = *s; if (x != *t) break; if (!x) break; ++s; ++t; + x = *s; if (x != *t) break; if (!x) break; ++s; ++t; + x = *s; if (x != *t) break; if (!x) break; ++s; ++t; + } + return ((int)(unsigned int)(unsigned char) x) + - ((int)(unsigned int)(unsigned char) *t) ; +} + +#endif |