[BACK]Return to dgeqr2p.f CVS log [TXT] [DIR] Up to [local] / rpl / lapack / lapack

Diff for /rpl/lapack/lapack/dgeqr2p.f between versions 1.11 and 1.15

version 1.11, 2014/01/27 09:28:16 version 1.15, 2017/06/17 11:06:17
Line 2 Line 2
 *  *
 *  =========== DOCUMENTATION ===========  *  =========== DOCUMENTATION ===========
 *  *
 * Online html documentation available at   * Online html documentation available at
 *            http://www.netlib.org/lapack/explore-html/   *            http://www.netlib.org/lapack/explore-html/
 *  *
 *> \htmlonly  *> \htmlonly
 *> Download DGEQR2P + dependencies   *> Download DGEQR2P + dependencies
 *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dgeqr2p.f">   *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dgeqr2p.f">
 *> [TGZ]</a>   *> [TGZ]</a>
 *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dgeqr2p.f">   *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dgeqr2p.f">
 *> [ZIP]</a>   *> [ZIP]</a>
 *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dgeqr2p.f">   *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dgeqr2p.f">
 *> [TXT]</a>  *> [TXT]</a>
 *> \endhtmlonly   *> \endhtmlonly
 *  *
 *  Definition:  *  Definition:
 *  ===========  *  ===========
 *  *
 *       SUBROUTINE DGEQR2P( M, N, A, LDA, TAU, WORK, INFO )  *       SUBROUTINE DGEQR2P( M, N, A, LDA, TAU, WORK, INFO )
 *   *
 *       .. Scalar Arguments ..  *       .. Scalar Arguments ..
 *       INTEGER            INFO, LDA, M, N  *       INTEGER            INFO, LDA, M, N
 *       ..  *       ..
 *       .. Array Arguments ..  *       .. Array Arguments ..
 *       DOUBLE PRECISION   A( LDA, * ), TAU( * ), WORK( * )  *       DOUBLE PRECISION   A( LDA, * ), TAU( * ), WORK( * )
 *       ..  *       ..
 *    *
 *  *
 *> \par Purpose:  *> \par Purpose:
 *  =============  *  =============
 *>  *>
 *> \verbatim  *> \verbatim
 *>  *>
 *> DGEQR2 computes a QR factorization of a real m by n matrix A:  *> DGEQR2P computes a QR factorization of a real m by n matrix A:
 *> A = Q * R.  *> A = Q * R. The diagonal entries of R are nonnegative.
 *> \endverbatim  *> \endverbatim
 *  *
 *  Arguments:  *  Arguments:
Line 58 Line 58
 *>          On entry, the m by n matrix A.  *>          On entry, the m by n matrix A.
 *>          On exit, the elements on and above the diagonal of the array  *>          On exit, the elements on and above the diagonal of the array
 *>          contain the min(m,n) by n upper trapezoidal matrix R (R is  *>          contain the min(m,n) by n upper trapezoidal matrix R (R is
 *>          upper triangular if m >= n); the elements below the diagonal,  *>          upper triangular if m >= n). The diagonal entries of R are
   *>          nonnegative; the elements below the diagonal,
 *>          with the array TAU, represent the orthogonal matrix Q as a  *>          with the array TAU, represent the orthogonal matrix Q as a
 *>          product of elementary reflectors (see Further Details).  *>          product of elementary reflectors (see Further Details).
 *> \endverbatim  *> \endverbatim
Line 91 Line 92
 *  Authors:  *  Authors:
 *  ========  *  ========
 *  *
 *> \author Univ. of Tennessee   *> \author Univ. of Tennessee
 *> \author Univ. of California Berkeley   *> \author Univ. of California Berkeley
 *> \author Univ. of Colorado Denver   *> \author Univ. of Colorado Denver
 *> \author NAG Ltd.   *> \author NAG Ltd.
 *  *
 *> \date September 2012  *> \date December 2016
 *  *
 *> \ingroup doubleGEcomputational  *> \ingroup doubleGEcomputational
 *  *
Line 116 Line 117
 *>  where tau is a real scalar, and v is a real vector with  *>  where tau is a real scalar, and v is a real vector with
 *>  v(1:i-1) = 0 and v(i) = 1; v(i+1:m) is stored on exit in A(i+1:m,i),  *>  v(1:i-1) = 0 and v(i) = 1; v(i+1:m) is stored on exit in A(i+1:m,i),
 *>  and tau in TAU(i).  *>  and tau in TAU(i).
   *>
   *> See Lapack Working Note 203 for details
 *> \endverbatim  *> \endverbatim
 *>  *>
 *  =====================================================================  *  =====================================================================
       SUBROUTINE DGEQR2P( M, N, A, LDA, TAU, WORK, INFO )        SUBROUTINE DGEQR2P( M, N, A, LDA, TAU, WORK, INFO )
 *  *
 *  -- LAPACK computational routine (version 3.4.2) --  *  -- LAPACK computational routine (version 3.7.0) --
 *  -- LAPACK is a software package provided by Univ. of Tennessee,    --  *  -- LAPACK is a software package provided by Univ. of Tennessee,    --
 *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--  *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
 *     September 2012  *     December 2016
 *  *
 *     .. Scalar Arguments ..  *     .. Scalar Arguments ..
       INTEGER            INFO, LDA, M, N        INTEGER            INFO, LDA, M, N
Removed from v.1.11  
changed lines
  Added in v.1.15

CVSweb interface <joel.bertrand@systella.fr>