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);
}
}
