ZUNGQR(l)		LAPACK routine (version	1.1)		    ZUNGQR(l)

NAME
  ZUNGQR - generate an M-by-N complex matrix Q with orthonormal	columns,

SYNOPSIS

  SUBROUTINE ZUNGQR( M,	N, K, A, LDA, TAU, WORK, LWORK,	INFO )

      INTEGER	     INFO, K, LDA, LWORK, M, N

      COMPLEX*16     A(	LDA, * ), TAU( * ), WORK( LWORK	)

PURPOSE
  ZUNGQR generates an M-by-N complex matrix Q with orthonormal columns,	which
  is defined as	the first N columns of a product of K elementary reflectors
  of order M

	Q  =  H(1) H(2)	. . . H(k)

  as returned by ZGEQRF.

ARGUMENTS

  M	  (input) INTEGER
	  The number of	rows of	the matrix Q. M	>= 0.

  N	  (input) INTEGER
	  The number of	columns	of the matrix Q. M >= N	>= 0.

  K	  (input) INTEGER
	  The number of	elementary reflectors whose product defines the
	  matrix Q. N >= K >= 0.

  A	  (input/output) COMPLEX*16 array, dimension (LDA,N)
	  On entry, the	i-th column must contain the vector which defines the
	  elementary reflector H(i), for i = 1,2,...,k,	as returned by ZGEQRF
	  in the first k columns of its	array argument A.  On exit, the	M-
	  by-N matrix Q.

  LDA	  (input) INTEGER
	  The first dimension of the array A. LDA >= max(1,M).

  TAU	  (input) COMPLEX*16 array, dimension (K)
	  TAU(i) must contain the scalar factor	of the elementary reflector
	  H(i),	as returned by ZGEQRF.

  WORK	  (workspace) COMPLEX*16 array,	dimension (LWORK)
	  On exit, if INFO = 0,	WORK(1)	returns	the optimal LWORK.

  LWORK	  (input) INTEGER
	  The dimension	of the array WORK. LWORK >= max(1,N).  For optimum
	  performance LWORK >= N*NB, where NB is the optimal blocksize.

  INFO	  (output) INTEGER
	  = 0:	successful exit
	  < 0:	if INFO	= -i, the i-th argument	has an illegal value