version 1.14, 2015/11/26 11:44:15
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version 1.18, 2018/05/29 06:55:16
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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 DGESVJ + dependencies |
*> Download DGESVJ + dependencies |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dgesvj.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dgesvj.f"> |
*> [TGZ]</a> |
*> [TGZ]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dgesvj.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dgesvj.f"> |
*> [ZIP]</a> |
*> [ZIP]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dgesvj.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dgesvj.f"> |
*> [TXT]</a> |
*> [TXT]</a> |
*> \endhtmlonly |
*> \endhtmlonly |
* |
* |
* Definition: |
* Definition: |
* =========== |
* =========== |
* |
* |
* SUBROUTINE DGESVJ( JOBA, JOBU, JOBV, M, N, A, LDA, SVA, MV, V, |
* SUBROUTINE DGESVJ( JOBA, JOBU, JOBV, M, N, A, LDA, SVA, MV, V, |
* LDV, WORK, LWORK, INFO ) |
* LDV, WORK, LWORK, INFO ) |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
* INTEGER INFO, LDA, LDV, LWORK, M, MV, N |
* INTEGER INFO, LDA, LDV, LWORK, M, MV, N |
* CHARACTER*1 JOBA, JOBU, JOBV |
* CHARACTER*1 JOBA, JOBU, JOBV |
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* DOUBLE PRECISION A( LDA, * ), SVA( N ), V( LDV, * ), |
* DOUBLE PRECISION A( LDA, * ), SVA( N ), V( LDV, * ), |
* $ WORK( LWORK ) |
* $ WORK( LWORK ) |
* .. |
* .. |
* |
* |
* |
* |
*> \par Purpose: |
*> \par Purpose: |
* ============= |
* ============= |
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* |
* |
*> \param[in] JOBA |
*> \param[in] JOBA |
*> \verbatim |
*> \verbatim |
*> JOBA is CHARACTER* 1 |
*> JOBA is CHARACTER*1 |
*> Specifies the structure of A. |
*> Specifies the structure of A. |
*> = 'L': The input matrix A is lower triangular; |
*> = 'L': The input matrix A is lower triangular; |
*> = 'U': The input matrix A is upper triangular; |
*> = 'U': The input matrix A is upper triangular; |
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*> \param[in] M |
*> \param[in] M |
*> \verbatim |
*> \verbatim |
*> M is INTEGER |
*> M is INTEGER |
*> The number of rows of the input matrix A. 1/DLAMCH('E') > M >= 0. |
*> The number of rows of the input matrix A. 1/DLAMCH('E') > M >= 0. |
*> \endverbatim |
*> \endverbatim |
*> |
*> |
*> \param[in] N |
*> \param[in] N |
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*> |
*> |
*> \param[in,out] WORK |
*> \param[in,out] WORK |
*> \verbatim |
*> \verbatim |
*> WORK is DOUBLE PRECISION array, dimension max(4,M+N). |
*> WORK is DOUBLE PRECISION array, dimension (LWORK) |
*> On entry : |
*> On entry : |
*> If JOBU .EQ. 'C' : |
*> If JOBU .EQ. 'C' : |
*> WORK(1) = CTOL, where CTOL defines the threshold for convergence. |
*> WORK(1) = CTOL, where CTOL defines the threshold for convergence. |
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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 November 2015 |
*> \date June 2017 |
* |
* |
*> \ingroup doubleGEcomputational |
*> \ingroup doubleGEcomputational |
* |
* |
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SUBROUTINE DGESVJ( JOBA, JOBU, JOBV, M, N, A, LDA, SVA, MV, V, |
SUBROUTINE DGESVJ( JOBA, JOBU, JOBV, M, N, A, LDA, SVA, MV, V, |
$ LDV, WORK, LWORK, INFO ) |
$ LDV, WORK, LWORK, INFO ) |
* |
* |
* -- LAPACK computational routine (version 3.6.0) -- |
* -- LAPACK computational 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..-- |
* November 2015 |
* June 2017 |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
INTEGER INFO, LDA, LDV, LWORK, M, MV, N |
INTEGER INFO, LDA, LDV, LWORK, M, MV, N |
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MXSINJ = MAX( MXSINJ, DABS( SN ) ) |
MXSINJ = MAX( MXSINJ, DABS( SN ) ) |
SVA( q ) = AAQQ*DSQRT( MAX( ZERO, |
SVA( q ) = AAQQ*DSQRT( MAX( ZERO, |
$ ONE+T*APOAQ*AAPQ ) ) |
$ ONE+T*APOAQ*AAPQ ) ) |
AAPP = AAPP*DSQRT( MAX( ZERO, |
AAPP = AAPP*DSQRT( MAX( ZERO, |
$ ONE-T*AQOAP*AAPQ ) ) |
$ ONE-T*AQOAP*AAPQ ) ) |
* |
* |
APOAQ = WORK( p ) / WORK( q ) |
APOAQ = WORK( p ) / WORK( q ) |