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dorgr2.f(3)				      LAPACK				      dorgr2.f(3)

NAME
       dorgr2.f -

SYNOPSIS
   Functions/Subroutines
       subroutine dorgr2 (M, N, K, A, LDA, TAU, WORK, INFO)
	   DORGR2 generates all or part of the orthogonal matrix Q from an RQ factorization
	   determined by sgerqf (unblocked algorithm).

Function/Subroutine Documentation
   subroutine dorgr2 (integerM, integerN, integerK, double precision, dimension( lda, * )A,
       integerLDA, double precision, dimension( * )TAU, double precision, dimension( * )WORK,
       integerINFO)
       DORGR2 generates all or part of the orthogonal matrix Q from an RQ factorization
       determined by sgerqf (unblocked algorithm).

       Purpose:

	    DORGR2 generates an m by n real matrix Q with orthonormal rows,
	    which is defined as the last m rows of a product of k elementary
	    reflectors of order n

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

	    as returned by DGERQF.

       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 (m-k+i)-th row must contain the vector which
		     defines the elementary reflector H(i), for i = 1,2,...,k, as
		     returned by DGERQF in the last 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 DGERQF.

	   WORK

		     WORK is DOUBLE PRECISION array, dimension (M)

	   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:
	   September 2012

       Definition at line 115 of file dorgr2.f.

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

Version 3.4.2				 Tue Sep 25 2012			      dorgr2.f(3)
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