#include <metal_stdlib>
#include <simd/simd.h>

typedef metal::uint type1[1];
struct PrimeIndices {
    type1 data;
};

metal::uint collatz_iterations(
    metal::uint n_base
) {
    metal::uint n;
    metal::uint i = 0u;
    n = n_base;
    while(true) {
        if (n <= 1u) {
            break;
        }
        if ((n % 2u) == 0u) {
            n = n / 2u;
        } else {
            n = (3u * n) + 1u;
        }
        i = i + 1u;
    }
    return i;
}

struct main1Input {
};
kernel void main1(
  metal::uint3 global_id [[thread_position_in_grid]]
, device PrimeIndices& v_indices [[user(fake0)]]
) {
    metal::uint _e9 = collatz_iterations(v_indices.data[global_id.x]);
    v_indices.data[global_id.x] = _e9;
    return;
}