I need to obtain a QR factorization of a matrix. The results of the IPP QRDecomp function appear to be many steps removed from an actual QR decomposition. (See p. 239 of the small matrices manual). Is there any sample code available that demonstrates how to compute the Q matrix from the Householder vectors that are actually returned by QRDecomp? The code in Example 7-1 ippmQRFactorization_32f does not actually extract a separate Q and R but instead immediately uses the Householder vector results in a back-substitution to solve a linear system.