store_32_n
store_32_n(load_32_n(aptr) ^ load_32_n(bptr), outptr);
store_32_n(load_32_n(out + q) ^ load_32_n(in + q), out + q);
store_32_n(load_32_n(out + q) ^ load_32_n(in + q), out + q);
store_32_n(load_32_n(outptr) ^ load_32_n(inptr), outptr);
store_32_n(num, n);