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#include "case.h"
int case_diffb(const void *yv, long long ylen, const void *xv) {
unsigned char a, b;
const unsigned char *y = yv;
const unsigned char *x = xv;
while (ylen > 0) {
a = *x++ - 'A'; b = *y++ - 'A'; --ylen;
if (a <= 'Z' - 'A') a += 'a'; else a += 'A';
if (b <= 'Z' - 'A') b += 'a'; else b += 'A';
if (a != b) return ((int)(unsigned int)b) - ((int)(unsigned int)a);
}
return 0;
}
int case_diffs(const void *yv, const void *xv) {
unsigned char a, b;
const unsigned char *y = yv;
const unsigned char *x = xv;
for (;;) {
a = *x++ - 'A'; b = *y++ - 'A';
if (a <= 'Z' - 'A') a += 'a'; else a += 'A';
if (b <= 'Z' - 'A') b += 'a'; else b += 'A';
if (a != b) break;
if (!a) break;
}
return ((int)(unsigned int)b) - ((int)(unsigned int)a);
}
void case_lowerb(void *xv, long long len) {
unsigned char *x = xv;
unsigned char y;
while (len > 0) {
--len;
y = *x - 'A';
if (y <= 'Z' - 'A') *x = y + 'a';
++x;
}
}
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