u2                 21 lib/libc/strncmp.c   register unsigned char u1, u2;
u2                 26 lib/libc/strncmp.c       u2 = (unsigned char) *s2++;
u2                 27 lib/libc/strncmp.c       if (u1 != u2)
u2                 28 lib/libc/strncmp.c 	return u1 - u2;