public override void QRSolveFactored(float[] q, float[] r, int rowsA, int columnsA, float[] tau, float[] b, int columnsB, float[] x, float[] work, QRMethod method = QRMethod.Full) { if (r == null) { throw new ArgumentNullException("r"); } if (q == null) { throw new ArgumentNullException("q"); } if (b == null) { throw new ArgumentNullException("q"); } if (x == null) { throw new ArgumentNullException("q"); } if (work == null) { throw new ArgumentNullException("work"); } int rowsQ, columnsQ, rowsR, columnsR; if (method == QRMethod.Full) { rowsQ = columnsQ = rowsR = rowsA; columnsR = columnsA; } else { rowsQ = rowsA; columnsQ = rowsR = columnsR = columnsA; } if (r.Length != rowsR * columnsR) { throw new ArgumentException(string.Format(Resources.ArgumentArrayWrongLength, rowsR * columnsR), "r"); } if (q.Length != rowsQ * columnsQ) { throw new ArgumentException(string.Format(Resources.ArgumentArrayWrongLength, rowsQ * columnsQ), "q"); } if (b.Length != rowsA * columnsB) { throw new ArgumentException(string.Format(Resources.ArgumentArrayWrongLength, rowsA * columnsB), "b"); } if (x.Length != columnsA * columnsB) { throw new ArgumentException(string.Format(Resources.ArgumentArrayWrongLength, columnsA * columnsB), "x"); } if (work.Length < 1) { work[0] = rowsA * Control.BlockSize; throw new ArgumentException(Resources.WorkArrayTooSmall, "work"); } if (method == QRMethod.Full) { SafeNativeMethods.s_qr_solve_factored(rowsA, columnsA, columnsB, r, b, tau, x, work, work.Length); } else { // we don't have access to the raw Q matrix any more(it is stored in R in the full QR), need to think about this. // let just call the managed version in the meantime. The heavy lifting has already been done. -marcus base.QRSolveFactored(q, r, rowsA, columnsA, tau, b, columnsB, x, QRMethod.Thin); } }