version 1.8, 2011/11/21 20:43:09
|
version 1.15, 2017/06/17 10:54:09
|
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 ZGELSS + dependencies |
*> Download ZGELSS + dependencies |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zgelss.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zgelss.f"> |
*> [TGZ]</a> |
*> [TGZ]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zgelss.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zgelss.f"> |
*> [ZIP]</a> |
*> [ZIP]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zgelss.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zgelss.f"> |
*> [TXT]</a> |
*> [TXT]</a> |
*> \endhtmlonly |
*> \endhtmlonly |
* |
* |
* Definition: |
* Definition: |
* =========== |
* =========== |
* |
* |
* SUBROUTINE ZGELSS( M, N, NRHS, A, LDA, B, LDB, S, RCOND, RANK, |
* SUBROUTINE ZGELSS( M, N, NRHS, A, LDA, B, LDB, S, RCOND, RANK, |
* WORK, LWORK, RWORK, INFO ) |
* WORK, LWORK, RWORK, INFO ) |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
* INTEGER INFO, LDA, LDB, LWORK, M, N, NRHS, RANK |
* INTEGER INFO, LDA, LDB, LWORK, M, N, NRHS, RANK |
* DOUBLE PRECISION RCOND |
* DOUBLE PRECISION RCOND |
Line 29
|
Line 29
|
* DOUBLE PRECISION RWORK( * ), S( * ) |
* DOUBLE PRECISION RWORK( * ), S( * ) |
* COMPLEX*16 A( LDA, * ), B( LDB, * ), WORK( * ) |
* COMPLEX*16 A( LDA, * ), B( LDB, * ), WORK( * ) |
* .. |
* .. |
* |
* |
* |
* |
*> \par Purpose: |
*> \par Purpose: |
* ============= |
* ============= |
Line 165
|
Line 165
|
* 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 2011 |
*> \date June 2016 |
* |
* |
*> \ingroup complex16GEsolve |
*> \ingroup complex16GEsolve |
* |
* |
Line 178
|
Line 178
|
SUBROUTINE ZGELSS( M, N, NRHS, A, LDA, B, LDB, S, RCOND, RANK, |
SUBROUTINE ZGELSS( M, N, NRHS, A, LDA, B, LDB, S, RCOND, RANK, |
$ WORK, LWORK, RWORK, INFO ) |
$ WORK, LWORK, RWORK, INFO ) |
* |
* |
* -- LAPACK driver routine (version 3.4.0) -- |
* -- LAPACK driver 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..-- |
* November 2011 |
* June 2016 |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
INTEGER INFO, LDA, LDB, LWORK, M, N, NRHS, RANK |
INTEGER INFO, LDA, LDB, LWORK, M, N, NRHS, RANK |
Line 285
|
Line 285
|
* Path 1 - overdetermined or exactly determined |
* Path 1 - overdetermined or exactly determined |
* |
* |
* Compute space needed for ZGEBRD |
* Compute space needed for ZGEBRD |
CALL ZGEBRD( MM, N, A, LDA, S, DUM(1), DUM(1), |
CALL ZGEBRD( MM, N, A, LDA, S, S, DUM(1), DUM(1), DUM(1), |
$ DUM(1), DUM(1), -1, INFO ) |
$ -1, INFO ) |
LWORK_ZGEBRD=DUM(1) |
LWORK_ZGEBRD=DUM(1) |
* Compute space needed for ZUNMBR |
* Compute space needed for ZUNMBR |
CALL ZUNMBR( 'Q', 'L', 'C', MM, NRHS, N, A, LDA, DUM(1), |
CALL ZUNMBR( 'Q', 'L', 'C', MM, NRHS, N, A, LDA, DUM(1), |
Line 296
|
Line 296
|
CALL ZUNGBR( 'P', N, N, N, A, LDA, DUM(1), |
CALL ZUNGBR( 'P', N, N, N, A, LDA, DUM(1), |
$ DUM(1), -1, INFO ) |
$ DUM(1), -1, INFO ) |
LWORK_ZUNGBR=DUM(1) |
LWORK_ZUNGBR=DUM(1) |
* Compute total workspace needed |
* Compute total workspace needed |
MAXWRK = MAX( MAXWRK, 2*N + LWORK_ZGEBRD ) |
MAXWRK = MAX( MAXWRK, 2*N + LWORK_ZGEBRD ) |
MAXWRK = MAX( MAXWRK, 2*N + LWORK_ZUNMBR ) |
MAXWRK = MAX( MAXWRK, 2*N + LWORK_ZUNMBR ) |
MAXWRK = MAX( MAXWRK, 2*N + LWORK_ZUNGBR ) |
MAXWRK = MAX( MAXWRK, 2*N + LWORK_ZUNGBR ) |
Line 315
|
Line 315
|
$ -1, INFO ) |
$ -1, INFO ) |
LWORK_ZGELQF=DUM(1) |
LWORK_ZGELQF=DUM(1) |
* Compute space needed for ZGEBRD |
* Compute space needed for ZGEBRD |
CALL ZGEBRD( M, M, A, LDA, S, DUM(1), DUM(1), |
CALL ZGEBRD( M, M, A, LDA, S, S, DUM(1), DUM(1), |
$ DUM(1), DUM(1), -1, INFO ) |
$ DUM(1), -1, INFO ) |
LWORK_ZGEBRD=DUM(1) |
LWORK_ZGEBRD=DUM(1) |
* Compute space needed for ZUNMBR |
* Compute space needed for ZUNMBR |
CALL ZUNMBR( 'Q', 'L', 'C', M, NRHS, N, A, LDA, |
CALL ZUNMBR( 'Q', 'L', 'C', M, NRHS, N, A, LDA, |
$ DUM(1), B, LDB, DUM(1), -1, INFO ) |
$ DUM(1), B, LDB, DUM(1), -1, INFO ) |
LWORK_ZUNMBR=DUM(1) |
LWORK_ZUNMBR=DUM(1) |
* Compute space needed for ZUNGBR |
* Compute space needed for ZUNGBR |
Line 330
|
Line 330
|
CALL ZUNMLQ( 'L', 'C', N, NRHS, M, A, LDA, DUM(1), |
CALL ZUNMLQ( 'L', 'C', N, NRHS, M, A, LDA, DUM(1), |
$ B, LDB, DUM(1), -1, INFO ) |
$ B, LDB, DUM(1), -1, INFO ) |
LWORK_ZUNMLQ=DUM(1) |
LWORK_ZUNMLQ=DUM(1) |
* Compute total workspace needed |
* Compute total workspace needed |
MAXWRK = M + LWORK_ZGELQF |
MAXWRK = M + LWORK_ZGELQF |
MAXWRK = MAX( MAXWRK, 3*M + M*M + LWORK_ZGEBRD ) |
MAXWRK = MAX( MAXWRK, 3*M + M*M + LWORK_ZGEBRD ) |
MAXWRK = MAX( MAXWRK, 3*M + M*M + LWORK_ZUNMBR ) |
MAXWRK = MAX( MAXWRK, 3*M + M*M + LWORK_ZUNMBR ) |
Line 346
|
Line 346
|
* Path 2 - underdetermined |
* Path 2 - underdetermined |
* |
* |
* Compute space needed for ZGEBRD |
* Compute space needed for ZGEBRD |
CALL ZGEBRD( M, N, A, LDA, S, DUM(1), DUM(1), |
CALL ZGEBRD( M, N, A, LDA, S, S, DUM(1), DUM(1), |
$ DUM(1), DUM(1), -1, INFO ) |
$ DUM(1), -1, INFO ) |
LWORK_ZGEBRD=DUM(1) |
LWORK_ZGEBRD=DUM(1) |
* Compute space needed for ZUNMBR |
* Compute space needed for ZUNMBR |
CALL ZUNMBR( 'Q', 'L', 'C', M, NRHS, M, A, LDA, |
CALL ZUNMBR( 'Q', 'L', 'C', M, NRHS, M, A, LDA, |
$ DUM(1), B, LDB, DUM(1), -1, INFO ) |
$ DUM(1), B, LDB, DUM(1), -1, INFO ) |
LWORK_ZUNMBR=DUM(1) |
LWORK_ZUNMBR=DUM(1) |
* Compute space needed for ZUNGBR |
* Compute space needed for ZUNGBR |