Esempio n. 1
0
        /// <summary> Assembly using setValues</summary>
        /// <param name="nu">Maximum number of entries
        /// </param>
        /// <returns> Dense representation (not a direct copy)
        /// </returns>
        public static double[] setsAssembleVector(IElementalAccessVector x, int nu)
        {
            int n = x.Length;

            double[]      data = new double[n];
            System.Random r    = new System.Random();

            int[]    ind = TesterUtilities.getIntArray(nu, r);
            double[] arr = TesterUtilities.getDoubleArray(ind.Length, r);
            for (int i = 0; i < ind.Length; ++i)
            {
                data[ind[i]] = arr[i];
            }
            x.SetValues(ind, arr);
            return(data);
        }
Esempio n. 2
0
        private void boundary(IElementalAccessMatrix A, IElementalAccessVector b,
                              IElementalAccessVector x, double gl, double gr)
        {
            int n = b.Length - 1;

            int[]    boundary  = new int[] { 0, n };
            double[] boundaryV = new double[] { gl, gr };

            x.SetValues(boundary, boundaryV);
            b.SetValues(boundary, boundaryV);

            A.SetValue(0, 0, 1);
            A.SetValue(0, 1, 0);
            A.SetValue(n, n, 1);
            A.SetValue(n, n - 1, 0);
        }