circom/circuits/tobin.circom

template toBin(n) {
    signal input inp;
    signal output out[n];
    var lc1=0;

    for (var i = 0; i<n; i++) {
        out[i] <-- (inp >> i) & 1;
        out[i] * (out[i] -1 ) === 0;
        lc1 += out[i] * 2**i;
    }

    lc1 === inp;

}


component toBin(3) main;