Should the complete or truncated factor be returned?
Dvec
Vector of diagonals to use when re-constructing Q (default is 1's).
y
A vector/matrix or right hand sides (int, float, or double).
Details
The factorization is performed by the LAPACK routine sgeqp3(). This
should be similar to calling qr() on an ordinary R matrix with the
argument LAPACK=TRUE. Calling qr(x, LAPACK=FALSE) on a double
precision matrix 'x' (the default) will not be comparable in performance (it
is much slower) or numerics to calling qr(s) where 's' is single a
float matrix.