ti83-sdk/lib83/memcmp.c

#include <string.h>

int8_t memcmp(void * buf1, void * buf2, size_t count) {
	if (!count) return 0;

	while (--count && *(unsigned char *)buf1 == *(unsigned char *)buf2) {
        buf1 = 1 + (unsigned char *)buf1; buf2 = 1 + (unsigned char *)buf2;
    }

	return *(char *)buf1 - *(char *)buf2;
}