version 1.15, 2014/01/27 09:28:22
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version 1.21, 2018/05/29 07:18:00
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* |
* |
* =========== 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 DLASD3 + dependencies |
*> Download DLASD3 + dependencies |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dlasd3.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dlasd3.f"> |
*> [TGZ]</a> |
*> [TGZ]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dlasd3.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dlasd3.f"> |
*> [ZIP]</a> |
*> [ZIP]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dlasd3.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dlasd3.f"> |
*> [TXT]</a> |
*> [TXT]</a> |
*> \endhtmlonly |
*> \endhtmlonly |
* |
* |
* Definition: |
* Definition: |
* =========== |
* =========== |
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* SUBROUTINE DLASD3( NL, NR, SQRE, K, D, Q, LDQ, DSIGMA, U, LDU, U2, |
* SUBROUTINE DLASD3( NL, NR, SQRE, K, D, Q, LDQ, DSIGMA, U, LDU, U2, |
* LDU2, VT, LDVT, VT2, LDVT2, IDXC, CTOT, Z, |
* LDU2, VT, LDVT, VT2, LDVT2, IDXC, CTOT, Z, |
* INFO ) |
* INFO ) |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
* INTEGER INFO, K, LDQ, LDU, LDU2, LDVT, LDVT2, NL, NR, |
* INTEGER INFO, K, LDQ, LDU, LDU2, LDVT, LDVT2, NL, NR, |
* $ SQRE |
* $ SQRE |
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* $ U2( LDU2, * ), VT( LDVT, * ), VT2( LDVT2, * ), |
* $ U2( LDU2, * ), VT( LDVT, * ), VT2( LDVT2, * ), |
* $ Z( * ) |
* $ Z( * ) |
* .. |
* .. |
* |
* |
* |
* |
*> \par Purpose: |
*> \par Purpose: |
* ============= |
* ============= |
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*> |
*> |
*> \param[out] Q |
*> \param[out] Q |
*> \verbatim |
*> \verbatim |
*> Q is DOUBLE PRECISION array, |
*> Q is DOUBLE PRECISION array, dimension (LDQ,K) |
*> dimension at least (LDQ,K). |
|
*> \endverbatim |
*> \endverbatim |
*> |
*> |
*> \param[in] LDQ |
*> \param[in] LDQ |
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*> The leading dimension of the array Q. LDQ >= K. |
*> The leading dimension of the array Q. LDQ >= K. |
*> \endverbatim |
*> \endverbatim |
*> |
*> |
*> \param[in] DSIGMA |
*> \param[in,out] DSIGMA |
*> \verbatim |
*> \verbatim |
*> DSIGMA is DOUBLE PRECISION array, dimension(K) |
*> DSIGMA is DOUBLE PRECISION array, dimension(K) |
*> The first K elements of this array contain the old roots |
*> The first K elements of this array contain the old roots |
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*> The leading dimension of the array U. LDU >= N. |
*> The leading dimension of the array U. LDU >= N. |
*> \endverbatim |
*> \endverbatim |
*> |
*> |
*> \param[in,out] U2 |
*> \param[in] U2 |
*> \verbatim |
*> \verbatim |
*> U2 is DOUBLE PRECISION array, dimension (LDU2, N) |
*> U2 is DOUBLE PRECISION array, dimension (LDU2, N) |
*> The first K columns of this matrix contain the non-deflated |
*> The first K columns of this matrix contain the non-deflated |
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*> type is any column which has been deflated. |
*> type is any column which has been deflated. |
*> \endverbatim |
*> \endverbatim |
*> |
*> |
*> \param[in] Z |
*> \param[in,out] Z |
*> \verbatim |
*> \verbatim |
*> Z is DOUBLE PRECISION array, dimension (K) |
*> Z is DOUBLE PRECISION array, dimension (K) |
*> The first K elements of this array contain the components |
*> The first K elements of this array contain the components |
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* 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 June 2017 |
* |
* |
*> \ingroup auxOTHERauxiliary |
*> \ingroup OTHERauxiliary |
* |
* |
*> \par Contributors: |
*> \par Contributors: |
* ================== |
* ================== |
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$ LDU2, VT, LDVT, VT2, LDVT2, IDXC, CTOT, Z, |
$ LDU2, VT, LDVT, VT2, LDVT2, IDXC, CTOT, Z, |
$ INFO ) |
$ INFO ) |
* |
* |
* -- LAPACK auxiliary routine (version 3.4.2) -- |
* -- LAPACK auxiliary routine (version 3.7.1) -- |
* -- 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 |
* June 2017 |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
INTEGER INFO, K, LDQ, LDU, LDU2, LDVT, LDVT2, NL, NR, |
INTEGER INFO, K, LDQ, LDU, LDU2, LDVT, LDVT2, NL, NR, |
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CALL DLASD4( K, J, DSIGMA, Z, U( 1, J ), RHO, D( J ), |
CALL DLASD4( K, J, DSIGMA, Z, U( 1, J ), RHO, D( J ), |
$ VT( 1, J ), INFO ) |
$ VT( 1, J ), INFO ) |
* |
* |
* If the zero finder fails, the computation is terminated. |
* If the zero finder fails, report the convergence failure. |
* |
* |
IF( INFO.NE.0 ) THEN |
IF( INFO.NE.0 ) THEN |
RETURN |
RETURN |