#include <stddef.h>

void keke_swap(void *a, void *b, size_t size) {
	char *aa = a;
	char *bb = b;
	for(size_t i = 0; i < size; i++) {
		aa[i] ^= bb[i];
		bb[i] ^= aa[i];
		aa[i] ^= bb[i];
	}
}

size_t next_power_of_two(size_t s) {
	size_t t = 1;
	while(t < s) t <<= 1;
	return t;
}