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version 1.16, 2016/08/27 15:27:13
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version 1.22, 2023/08/07 08:39:23
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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 ZHEEVR + dependencies |
*> Download ZHEEVR + dependencies |
| *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zheevr.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zheevr.f"> |
| *> [TGZ]</a> |
*> [TGZ]</a> |
| *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zheevr.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zheevr.f"> |
| *> [ZIP]</a> |
*> [ZIP]</a> |
| *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zheevr.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zheevr.f"> |
| *> [TXT]</a> |
*> [TXT]</a> |
| *> \endhtmlonly |
*> \endhtmlonly |
| * |
* |
| * Definition: |
* Definition: |
| * =========== |
* =========== |
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| * SUBROUTINE ZHEEVR( JOBZ, RANGE, UPLO, N, A, LDA, VL, VU, IL, IU, |
* SUBROUTINE ZHEEVR( JOBZ, RANGE, UPLO, N, A, LDA, VL, VU, IL, IU, |
| * ABSTOL, M, W, Z, LDZ, ISUPPZ, WORK, LWORK, |
* ABSTOL, M, W, Z, LDZ, ISUPPZ, WORK, LWORK, |
| * RWORK, LRWORK, IWORK, LIWORK, INFO ) |
* RWORK, LRWORK, IWORK, LIWORK, INFO ) |
| * |
* |
| * .. Scalar Arguments .. |
* .. Scalar Arguments .. |
| * CHARACTER JOBZ, RANGE, UPLO |
* CHARACTER JOBZ, RANGE, UPLO |
| * INTEGER IL, INFO, IU, LDA, LDZ, LIWORK, LRWORK, LWORK, |
* INTEGER IL, INFO, IU, LDA, LDZ, LIWORK, LRWORK, LWORK, |
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| * DOUBLE PRECISION RWORK( * ), W( * ) |
* DOUBLE PRECISION RWORK( * ), W( * ) |
| * COMPLEX*16 A( LDA, * ), WORK( * ), Z( LDZ, * ) |
* COMPLEX*16 A( LDA, * ), WORK( * ), Z( LDZ, * ) |
| * .. |
* .. |
| * |
* |
| * |
* |
| *> \par Purpose: |
*> \par Purpose: |
| * ============= |
* ============= |
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| *> The desired accuracy of the output can be specified by the input |
*> The desired accuracy of the output can be specified by the input |
| *> parameter ABSTOL. |
*> parameter ABSTOL. |
| *> |
*> |
| *> For more details, see DSTEMR's documentation and: |
*> For more details, see ZSTEMR's documentation and: |
| *> - Inderjit S. Dhillon and Beresford N. Parlett: "Multiple representations |
*> - Inderjit S. Dhillon and Beresford N. Parlett: "Multiple representations |
| *> to compute orthogonal eigenvectors of symmetric tridiagonal matrices," |
*> to compute orthogonal eigenvectors of symmetric tridiagonal matrices," |
| *> Linear Algebra and its Applications, 387(1), pp. 1-28, August 2004. |
*> Linear Algebra and its Applications, 387(1), pp. 1-28, August 2004. |
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| *> eigenvalues are computed to high relative accuracy when |
*> eigenvalues are computed to high relative accuracy when |
| *> possible in future releases. The current code does not |
*> possible in future releases. The current code does not |
| *> make any guarantees about high relative accuracy, but |
*> make any guarantees about high relative accuracy, but |
| *> furutre releases will. See J. Barlow and J. Demmel, |
*> future releases will. See J. Barlow and J. Demmel, |
| *> "Computing Accurate Eigensystems of Scaled Diagonally |
*> "Computing Accurate Eigensystems of Scaled Diagonally |
| *> Dominant Matrices", LAPACK Working Note #7, for a discussion |
*> Dominant Matrices", LAPACK Working Note #7, for a discussion |
| *> of which matrices define their eigenvalues to high relative |
*> of which matrices define their eigenvalues to high relative |
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| *> The support of the eigenvectors in Z, i.e., the indices |
*> The support of the eigenvectors in Z, i.e., the indices |
| *> indicating the nonzero elements in Z. The i-th eigenvector |
*> indicating the nonzero elements in Z. The i-th eigenvector |
| *> is nonzero only in elements ISUPPZ( 2*i-1 ) through |
*> is nonzero only in elements ISUPPZ( 2*i-1 ) through |
| *> ISUPPZ( 2*i ). |
*> ISUPPZ( 2*i ). This is an output of ZSTEMR (tridiagonal |
| |
*> matrix). The support of the eigenvectors of A is typically |
| |
*> 1:N because of the unitary transformations applied by ZUNMTR. |
| *> Implemented only for RANGE = 'A' or 'I' and IU - IL = N - 1 |
*> Implemented only for RANGE = 'A' or 'I' and IU - IL = N - 1 |
| *> \endverbatim |
*> \endverbatim |
| *> |
*> |
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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 June 2016 |
|
| * |
* |
| *> \ingroup complex16HEeigen |
*> \ingroup complex16HEeigen |
| * |
* |
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| $ ABSTOL, M, W, Z, LDZ, ISUPPZ, WORK, LWORK, |
$ ABSTOL, M, W, Z, LDZ, ISUPPZ, WORK, LWORK, |
| $ RWORK, LRWORK, IWORK, LIWORK, INFO ) |
$ RWORK, LRWORK, IWORK, LIWORK, INFO ) |
| * |
* |
| * -- LAPACK driver routine (version 3.6.1) -- |
* -- LAPACK driver routine -- |
| * -- 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..-- |
| * June 2016 |
|
| * |
* |
| * .. Scalar Arguments .. |
* .. Scalar Arguments .. |
| CHARACTER JOBZ, RANGE, UPLO |
CHARACTER JOBZ, RANGE, UPLO |
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| $ IWORK, LIWORK, INFO ) |
$ IWORK, LIWORK, INFO ) |
| * |
* |
| * Apply unitary matrix used in reduction to tridiagonal |
* Apply unitary matrix used in reduction to tridiagonal |
| * form to eigenvectors returned by ZSTEIN. |
* form to eigenvectors returned by ZSTEMR. |
| * |
* |
| IF( WANTZ .AND. INFO.EQ.0 ) THEN |
IF( WANTZ .AND. INFO.EQ.0 ) THEN |
| INDWKN = INDWK |
INDWKN = INDWK |
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