docs: public static Kernel2D_F64 wrap(double data[], int width, int offset) {
  		if (width % 2 == 0 && width <= 0 && width * width > data.length)
  			throw new IllegalArgumentException("invalid width");
  
  		Kernel2D_F64 ret = new Kernel2D_F64();
  		ret.data = data;
  		ret.width = width;
  		ret.offset = offset;
  
  		return ret;
  	}