out]
    T       COMPLEX_16 array, dimension (LDT,NB)
            The upper triangular matrix T.

    @param[in]
    ldt     INTEGER
            The leading dimension of the array T.  LDT >= NB.

    @param[out]
    Y       COMPLEX_16 array, dimension (LDY,NB)
            The n-by-nb matrix Y.

    @param[in]
    ldy     INTEGER
            The leading dimension of the array Y. LDY >= N.

    Further Details
    ---------------
    The matrix Q is represented as a product of nb elementary reflectors

      