You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
21 lines
704 B
C
21 lines
704 B
C
#include "byte.h"
|
|
|
|
/* str_diff returns negative, 0, or positive, depending on whether the
|
|
* string a[0], a[1], ..., a[n]=='\0' is lexicographically smaller than,
|
|
* equal to, or greater than the string b[0], b[1], ..., b[m-1]=='\0'.
|
|
* When the strings are different, str_diff does not read bytes past the
|
|
* first difference. */
|
|
int str_diff(const char* a, const char* b) {
|
|
register const char* s=a;
|
|
register const char* t=b;
|
|
register int j;
|
|
j=0;
|
|
for (;;) {
|
|
if ((j=(*s-*t))) break; if (!*t) break; ++s; ++t;
|
|
if ((j=(*s-*t))) break; if (!*t) break; ++s; ++t;
|
|
if ((j=(*s-*t))) break; if (!*t) break; ++s; ++t;
|
|
if ((j=(*s-*t))) break; if (!*t) break; ++s; ++t;
|
|
}
|
|
return j;
|
|
}
|