version 1.10, 2012/08/22 09:48:31
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version 1.16, 2017/06/17 10:54:12
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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 ZGGBAL + dependencies |
*> Download ZGGBAL + dependencies |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zggbal.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zggbal.f"> |
*> [TGZ]</a> |
*> [TGZ]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zggbal.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zggbal.f"> |
*> [ZIP]</a> |
*> [ZIP]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zggbal.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zggbal.f"> |
*> [TXT]</a> |
*> [TXT]</a> |
*> \endhtmlonly |
*> \endhtmlonly |
* |
* |
* Definition: |
* Definition: |
* =========== |
* =========== |
* |
* |
* SUBROUTINE ZGGBAL( JOB, N, A, LDA, B, LDB, ILO, IHI, LSCALE, |
* SUBROUTINE ZGGBAL( JOB, N, A, LDA, B, LDB, ILO, IHI, LSCALE, |
* RSCALE, WORK, INFO ) |
* RSCALE, WORK, INFO ) |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
* CHARACTER JOB |
* CHARACTER JOB |
* INTEGER IHI, ILO, INFO, LDA, LDB, N |
* INTEGER IHI, ILO, INFO, LDA, LDB, N |
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* DOUBLE PRECISION LSCALE( * ), RSCALE( * ), WORK( * ) |
* DOUBLE PRECISION LSCALE( * ), RSCALE( * ), WORK( * ) |
* COMPLEX*16 A( LDA, * ), B( LDB, * ) |
* COMPLEX*16 A( LDA, * ), B( LDB, * ) |
* .. |
* .. |
* |
* |
* |
* |
*> \par Purpose: |
*> \par Purpose: |
* ============= |
* ============= |
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*> |
*> |
*> \param[out] WORK |
*> \param[out] WORK |
*> \verbatim |
*> \verbatim |
*> WORK is REAL array, dimension (lwork) |
*> WORK is DOUBLE PRECISION array, dimension (lwork) |
*> lwork must be at least max(1,6*N) when JOB = 'S' or 'B', and |
*> lwork must be at least max(1,6*N) when JOB = 'S' or 'B', and |
*> at least 1 when JOB = 'N' or 'P'. |
*> at least 1 when JOB = 'N' or 'P'. |
*> \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 November 2011 |
*> \date June 2016 |
* |
* |
*> \ingroup complex16GBcomputational |
*> \ingroup complex16GBcomputational |
* |
* |
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SUBROUTINE ZGGBAL( JOB, N, A, LDA, B, LDB, ILO, IHI, LSCALE, |
SUBROUTINE ZGGBAL( JOB, N, A, LDA, B, LDB, ILO, IHI, LSCALE, |
$ RSCALE, WORK, INFO ) |
$ RSCALE, 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 |
* June 2016 |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
CHARACTER JOB |
CHARACTER JOB |
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IRAB = IZAMAX( N-ILO+1, B( I, ILO ), LDB ) |
IRAB = IZAMAX( N-ILO+1, B( I, ILO ), LDB ) |
RAB = MAX( RAB, ABS( B( I, IRAB+ILO-1 ) ) ) |
RAB = MAX( RAB, ABS( B( I, IRAB+ILO-1 ) ) ) |
LRAB = INT( LOG10( RAB+SFMIN ) / BASL+ONE ) |
LRAB = INT( LOG10( RAB+SFMIN ) / BASL+ONE ) |
IR = LSCALE( I ) + SIGN( HALF, LSCALE( I ) ) |
IR = INT(LSCALE( I ) + SIGN( HALF, LSCALE( I ) )) |
IR = MIN( MAX( IR, LSFMIN ), LSFMAX, LSFMAX-LRAB ) |
IR = MIN( MAX( IR, LSFMIN ), LSFMAX, LSFMAX-LRAB ) |
LSCALE( I ) = SCLFAC**IR |
LSCALE( I ) = SCLFAC**IR |
ICAB = IZAMAX( IHI, A( 1, I ), 1 ) |
ICAB = IZAMAX( IHI, A( 1, I ), 1 ) |
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ICAB = IZAMAX( IHI, B( 1, I ), 1 ) |
ICAB = IZAMAX( IHI, B( 1, I ), 1 ) |
CAB = MAX( CAB, ABS( B( ICAB, I ) ) ) |
CAB = MAX( CAB, ABS( B( ICAB, I ) ) ) |
LCAB = INT( LOG10( CAB+SFMIN ) / BASL+ONE ) |
LCAB = INT( LOG10( CAB+SFMIN ) / BASL+ONE ) |
JC = RSCALE( I ) + SIGN( HALF, RSCALE( I ) ) |
JC = INT(RSCALE( I ) + SIGN( HALF, RSCALE( I ) )) |
JC = MIN( MAX( JC, LSFMIN ), LSFMAX, LSFMAX-LCAB ) |
JC = MIN( MAX( JC, LSFMIN ), LSFMAX, LSFMAX-LCAB ) |
RSCALE( I ) = SCLFAC**JC |
RSCALE( I ) = SCLFAC**JC |
360 CONTINUE |
360 CONTINUE |