Processing 'It looks like you're mixing "active" and "static" modes.'

Processing keeps giving me this error when I run it even though it is just a print command. When I delete the comment block it works fine. Here's the code:

/*
    float[] cortToPolar(int xcorr, int ycorr) {
    float returns[] = new float[2];
    returns[0]= degrees(tan(ycorr/xcorr));
    returns[1]= sqrt(pow(xcorr,2)+pow(ycorr,2));
    return returns;
}

float lawCos(int a, int b, int c) {
  return degrees(
     acos(
     (pow(a,2)+pow(b,2)-pow(c,2))/
       (2*a*b)
     )
  );
}
*/
print(0); 

Why doesn't it like my comment?