version 1.11, 2011/11/21 22:19:34
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version 1.17, 2016/08/27 15:34:31
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*> \brief \b DLASD0 |
*> \brief \b DLASD0 computes the singular values of a real upper bidiagonal n-by-m matrix B with diagonal d and off-diagonal e. Used by sbdsdc. |
* |
* |
* =========== DOCUMENTATION =========== |
* =========== DOCUMENTATION =========== |
* |
* |
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*> \author Univ. of Colorado Denver |
*> \author Univ. of Colorado Denver |
*> \author NAG Ltd. |
*> \author NAG Ltd. |
* |
* |
*> \date November 2011 |
*> \date November 2015 |
* |
* |
*> \ingroup auxOTHERauxiliary |
*> \ingroup auxOTHERauxiliary |
* |
* |
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SUBROUTINE DLASD0( N, SQRE, D, E, U, LDU, VT, LDVT, SMLSIZ, IWORK, |
SUBROUTINE DLASD0( N, SQRE, D, E, U, LDU, VT, LDVT, SMLSIZ, IWORK, |
$ WORK, INFO ) |
$ WORK, INFO ) |
* |
* |
* -- LAPACK auxiliary routine (version 3.4.0) -- |
* -- LAPACK auxiliary routine (version 3.6.0) -- |
* -- 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 |
* November 2015 |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
INTEGER INFO, LDU, LDVT, N, SMLSIZ, SQRE |
INTEGER INFO, LDU, LDVT, N, SMLSIZ, SQRE |
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CALL DLASD1( NL, NR, SQREI, D( NLF ), ALPHA, BETA, |
CALL DLASD1( NL, NR, SQREI, D( NLF ), ALPHA, BETA, |
$ U( NLF, NLF ), LDU, VT( NLF, NLF ), LDVT, |
$ U( NLF, NLF ), LDU, VT( NLF, NLF ), LDVT, |
$ IWORK( IDXQC ), IWORK( IWK ), WORK, INFO ) |
$ IWORK( IDXQC ), IWORK( IWK ), WORK, INFO ) |
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* |
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* Report the possible convergence failure. |
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* |
IF( INFO.NE.0 ) THEN |
IF( INFO.NE.0 ) THEN |
RETURN |
RETURN |
END IF |
END IF |