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version 1.14, 2016/08/27 15:34:42
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version 1.15, 2017/06/17 10:54:06
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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 DTREVC + dependencies |
*> Download DTREVC + dependencies |
| *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dtrevc.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dtrevc.f"> |
| *> [TGZ]</a> |
*> [TGZ]</a> |
| *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dtrevc.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dtrevc.f"> |
| *> [ZIP]</a> |
*> [ZIP]</a> |
| *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dtrevc.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dtrevc.f"> |
| *> [TXT]</a> |
*> [TXT]</a> |
| *> \endhtmlonly |
*> \endhtmlonly |
| * |
* |
| * Definition: |
* Definition: |
| * =========== |
* =========== |
| * |
* |
| * SUBROUTINE DTREVC( SIDE, HOWMNY, SELECT, N, T, LDT, VL, LDVL, VR, |
* SUBROUTINE DTREVC( SIDE, HOWMNY, SELECT, N, T, LDT, VL, LDVL, VR, |
| * LDVR, MM, M, WORK, INFO ) |
* LDVR, MM, M, WORK, INFO ) |
| * |
* |
| * .. Scalar Arguments .. |
* .. Scalar Arguments .. |
| * CHARACTER HOWMNY, SIDE |
* CHARACTER HOWMNY, SIDE |
| * INTEGER INFO, LDT, LDVL, LDVR, M, MM, N |
* INTEGER INFO, LDT, LDVL, LDVR, M, MM, N |
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| * DOUBLE PRECISION T( LDT, * ), VL( LDVL, * ), VR( LDVR, * ), |
* DOUBLE PRECISION T( LDT, * ), VL( LDVL, * ), VR( LDVR, * ), |
| * $ WORK( * ) |
* $ WORK( * ) |
| * .. |
* .. |
| * |
* |
| * |
* |
| *> \par Purpose: |
*> \par Purpose: |
| * ============= |
* ============= |
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| *> a real upper quasi-triangular matrix T. |
*> a real upper quasi-triangular matrix T. |
| *> Matrices of this type are produced by the Schur factorization of |
*> Matrices of this type are produced by the Schur factorization of |
| *> a real general matrix: A = Q*T*Q**T, as computed by DHSEQR. |
*> a real general matrix: A = Q*T*Q**T, as computed by DHSEQR. |
| *> |
*> |
| *> The right eigenvector x and the left eigenvector y of T corresponding |
*> The right eigenvector x and the left eigenvector y of T corresponding |
| *> to an eigenvalue w are defined by: |
*> to an eigenvalue w are defined by: |
| *> |
*> |
| *> T*x = w*x, (y**T)*T = w*(y**T) |
*> T*x = w*x, (y**H)*T = w*(y**H) |
| *> |
*> |
| *> where y**T denotes the transpose of y. |
*> where y**H denotes the conjugate transpose of y. |
| *> The eigenvalues are not input to this routine, but are read directly |
*> The eigenvalues are not input to this routine, but are read directly |
| *> from the diagonal blocks of T. |
*> from the diagonal blocks of T. |
| *> |
*> |
| *> This routine returns the matrices X and/or Y of right and left |
*> This routine returns the matrices X and/or Y of right and left |
| *> eigenvectors of T, or the products Q*X and/or Q*Y, where Q is an |
*> eigenvectors of T, or the products Q*X and/or Q*Y, where Q is an |
| *> input matrix. If Q is the orthogonal factor that reduces a matrix |
*> input matrix. If Q is the orthogonal factor that reduces a matrix |
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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 2011 |
*> \date December 2016 |
| * |
* |
| *> \ingroup doubleOTHERcomputational |
*> \ingroup doubleOTHERcomputational |
| * |
* |
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| SUBROUTINE DTREVC( SIDE, HOWMNY, SELECT, N, T, LDT, VL, LDVL, VR, |
SUBROUTINE DTREVC( SIDE, HOWMNY, SELECT, N, T, LDT, VL, LDVL, VR, |
| $ LDVR, MM, M, WORK, INFO ) |
$ LDVR, MM, M, WORK, INFO ) |
| * |
* |
| * -- LAPACK computational routine (version 3.4.0) -- |
* -- 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..-- |
| * November 2011 |
* December 2016 |
| * |
* |
| * .. Scalar Arguments .. |
* .. Scalar Arguments .. |
| CHARACTER HOWMNY, SIDE |
CHARACTER HOWMNY, SIDE |
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