docs: protected int effectiveBandSize(final int dim1, final int dim2) {
      if(bandSize == Double.POSITIVE_INFINITY) {
        return (dim1 > dim2) ? dim1 : dim2;
      }
      if(bandSize >= 1.) {
        return (int) bandSize;
      }
      // Max * bandSize:
      return (int) Math.ceil((dim1 >= dim2 ? dim1 : dim2) * bandSize);
    }