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dorglq.f(3)				      LAPACK				      dorglq.f(3)

NAME
       dorglq.f -

SYNOPSIS
   Functions/Subroutines
       subroutine dorglq (M, N, K, A, LDA, TAU, WORK, LWORK, INFO)
	   DORGLQ

Function/Subroutine Documentation
   subroutine dorglq (integerM, integerN, integerK, double precision, dimension( lda, * )A,
       integerLDA, double precision, dimension( * )TAU, double precision, dimension( * )WORK,
       integerLWORK, integerINFO)
       DORGLQ

       Purpose:

	    DORGLQ generates an M-by-N real matrix Q with orthonormal rows,
	    which is defined as the first M rows of a product of K elementary
	    reflectors of order N

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

	    as returned by DGELQF.

       Parameters:
	   M

		     M is INTEGER
		     The number of rows of the matrix Q. M >= 0.

	   N

		     N is INTEGER
		     The number of columns of the matrix Q. N >= M.

	   K

		     K is INTEGER
		     The number of elementary reflectors whose product defines the
		     matrix Q. M >= K >= 0.

	   A

		     A is DOUBLE PRECISION array, dimension (LDA,N)
		     On entry, the i-th row must contain the vector which defines
		     the elementary reflector H(i), for i = 1,2,...,k, as returned
		     by DGELQF in the first k rows of its array argument A.
		     On exit, the M-by-N matrix Q.

	   LDA

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

	   TAU

		     TAU is DOUBLE PRECISION array, dimension (K)
		     TAU(i) must contain the scalar factor of the elementary
		     reflector H(i), as returned by DGELQF.

	   WORK

		     WORK is DOUBLE PRECISION array, dimension (MAX(1,LWORK))
		     On exit, if INFO = 0, WORK(1) returns the optimal LWORK.

	   LWORK

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

		     If LWORK = -1, then a workspace query is assumed; the routine
		     only calculates the optimal size of the WORK array, returns
		     this value as the first entry of the WORK array, and no error
		     message related to LWORK is issued by XERBLA.

	   INFO

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

       Author:
	   Univ. of Tennessee

	   Univ. of California Berkeley

	   Univ. of Colorado Denver

	   NAG Ltd.

       Date:
	   November 2011

       Definition at line 128 of file dorglq.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.2				 Tue Sep 25 2012			      dorglq.f(3)
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