AX(1,M),  if STOREV = 'C';
          LDV &gt;= MAX(1,K),  if STOREV = 'R'.

  W       (input) DOUBLE PRECISION array, dimension
                  (LDW,K) if STOREW = 'C',
                  (LDW,M) if STOREW = 'R'
          On entry with STOREW = 'C', the leading M-by-K part of
          this array must contain in its columns the vectors which
          define the elementary reflector used to form parts of Q.
          On entry with STOREW = 'R', the leading K-by-M part of
          this array must contain i