public static double[] diffPoly(double[] coeffs, int n) {


		int o_indexcoeffs = 1;
		int o_indexwork = 0;
		int o_count = 0;
		int o_potency = n;

		double [] o_workarray = new double [coeffs.length];


		if (n == 0)
			return coeffs;								// original function

		if (n > coeffs.length)
			return coeffs;



		for (;n <= coeffs.length ;++n) {				// count back


			o_count += 1;

			while (o_count <= n+1) {
				o_workarray [o_indexwork] = coeffs [o_indexcoeffs + n] * (o_potency);			//   the range of less than n isn't interested
				++o_count;
				--o_potency;
			}

			o_indexwork += 1 ;
			o_potency = n;						// nötig? oder wird potency nur in der schleife verändert und behält sonst seinen wert

			if (o_indexcoeffs +n != coeffs.length)
				++o_indexcoeffs;
				++o_potency ;

				else
					return o_workarray;


		}
		return o_workarray;

	}