version 1.12, 2012/12/14 14:22:35
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version 1.19, 2023/08/07 08:38:59
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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 DLASD7 + dependencies |
*> Download DLASD7 + dependencies |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dlasd7.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dlasd7.f"> |
*> [TGZ]</a> |
*> [TGZ]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dlasd7.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dlasd7.f"> |
*> [ZIP]</a> |
*> [ZIP]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dlasd7.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dlasd7.f"> |
*> [TXT]</a> |
*> [TXT]</a> |
*> \endhtmlonly |
*> \endhtmlonly |
* |
* |
* Definition: |
* Definition: |
* =========== |
* =========== |
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* VLW, ALPHA, BETA, DSIGMA, IDX, IDXP, IDXQ, |
* VLW, ALPHA, BETA, DSIGMA, IDX, IDXP, IDXQ, |
* PERM, GIVPTR, GIVCOL, LDGCOL, GIVNUM, LDGNUM, |
* PERM, GIVPTR, GIVCOL, LDGCOL, GIVNUM, LDGNUM, |
* C, S, INFO ) |
* C, S, INFO ) |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
* INTEGER GIVPTR, ICOMPQ, INFO, K, LDGCOL, LDGNUM, NL, |
* INTEGER GIVPTR, ICOMPQ, INFO, K, LDGCOL, LDGNUM, NL, |
* $ NR, SQRE |
* $ NR, SQRE |
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* $ VF( * ), VFW( * ), VL( * ), VLW( * ), Z( * ), |
* $ VF( * ), VFW( * ), VL( * ), VLW( * ), Z( * ), |
* $ ZW( * ) |
* $ ZW( * ) |
* .. |
* .. |
* |
* |
* |
* |
*> \par Purpose: |
*> \par Purpose: |
* ============= |
* ============= |
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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 |
|
* |
* |
*> \ingroup auxOTHERauxiliary |
*> \ingroup OTHERauxiliary |
* |
* |
*> \par Contributors: |
*> \par Contributors: |
* ================== |
* ================== |
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$ PERM, GIVPTR, GIVCOL, LDGCOL, GIVNUM, LDGNUM, |
$ PERM, GIVPTR, GIVCOL, LDGCOL, GIVNUM, LDGNUM, |
$ C, S, INFO ) |
$ C, S, INFO ) |
* |
* |
* -- LAPACK auxiliary routine (version 3.4.2) -- |
* -- LAPACK auxiliary 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..-- |
* September 2012 |
|
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
INTEGER GIVPTR, ICOMPQ, INFO, K, LDGCOL, LDGNUM, NL, |
INTEGER GIVPTR, ICOMPQ, INFO, K, LDGCOL, LDGNUM, NL, |
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VL( I ) = VLW( IDXI ) |
VL( I ) = VLW( IDXI ) |
50 CONTINUE |
50 CONTINUE |
* |
* |
* Calculate the allowable deflation tolerence |
* Calculate the allowable deflation tolerance |
* |
* |
EPS = DLAMCH( 'Epsilon' ) |
EPS = DLAMCH( 'Epsilon' ) |
TOL = MAX( ABS( ALPHA ), ABS( BETA ) ) |
TOL = MAX( ABS( ALPHA ), ABS( BETA ) ) |