diff options
Diffstat (limited to 'case_diffs.c')
-rw-r--r-- | case_diffs.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/case_diffs.c b/case_diffs.c new file mode 100644 index 0000000..683977a --- /dev/null +++ b/case_diffs.c @@ -0,0 +1,17 @@ +#include "case.h" + +int case_diffs(register const char *s,register const char *t) +{ + register unsigned char x; + register unsigned char y; + + for (;;) { + x = *s++ - 'A'; + if (x <= 'Z' - 'A') x += 'a'; else x += 'A'; + y = *t++ - 'A'; + if (y <= 'Z' - 'A') y += 'a'; else y += 'A'; + if (x != y) break; + if (!x) break; + } + return ((int)(unsigned int) x) - ((int)(unsigned int) y); +} |