Recursive block + Bitwise counter

recursive_block-bitwise_counter.m

- (void)recursive_block {
    unsigned long (^recursive_block)(int);
    unsigned long (^ const (* restrict recursive_block_t))(int) = &recursive_block;

    __block unsigned long iterations = 30;
    iterations = ~(1 << (iterations + 1));
    __block unsigned long iteration;

    recursive_block = ^ (void(^print_block)(int, int)) {
        return ^ unsigned long (int count) {
            iteration = floor(log2(iterations));
            iterations >>= 1;
            print_block(count++, (int)iteration);
            return (iterations & 1) && (*recursive_block_t)(count);
        };
    }(^ (int l, int i) {
        printf("count == %d\t\titeration == %d\n", l, i);
    });

    recursive_block(0);
}