Processing – random | Codetter（こーどったー）

public final float random(float howbig) {
    // for some reason (rounding error?) Math.random() * 3
    // can sometimes return '3' (once in ~30 million tries)
    // so a check was added to avoid the inclusion of 'howbig'

    // avoid an infinite loop
    if (howbig == 0) return 0;

    // internal random number object
    if (internalRandom == null) internalRandom = new Random();

    float value = 0;
    do {
      //value = (float)Math.random() * howbig;
      value = internalRandom.nextFloat() * howbig;
    } while (value == howbig);
    return value;
  }