version 1.17, 2017/06/17 10:53:46
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version 1.21, 2023/08/07 08:38:47
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*> \author Univ. of Colorado Denver |
*> \author Univ. of Colorado Denver |
*> \author NAG Ltd. |
*> \author NAG Ltd. |
* |
* |
*> \date June 2016 |
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* |
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*> \ingroup auxOTHERcomputational |
*> \ingroup auxOTHERcomputational |
* |
* |
*> \par Contributors: |
*> \par Contributors: |
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SUBROUTINE DBDSDC( UPLO, COMPQ, N, D, E, U, LDU, VT, LDVT, Q, IQ, |
SUBROUTINE DBDSDC( UPLO, COMPQ, N, D, E, U, LDU, VT, LDVT, Q, IQ, |
$ WORK, IWORK, INFO ) |
$ WORK, IWORK, INFO ) |
* |
* |
* -- LAPACK computational routine (version 3.7.0) -- |
* -- LAPACK computational 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 |
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* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
CHARACTER COMPQ, UPLO |
CHARACTER COMPQ, UPLO |
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WSTART = 1 |
WSTART = 1 |
QSTART = 3 |
QSTART = 3 |
IF( ICOMPQ.EQ.1 ) THEN |
IF( ICOMPQ.EQ.1 ) THEN |
CALL DCOPY( N, D, 1, Q( 1 ), 1 ) |
CALL DCOPY( N, D, 1, Q( 1 ), 1 ) |
CALL DCOPY( N-1, E, 1, Q( N+1 ), 1 ) |
CALL DCOPY( N-1, E, 1, Q( N+1 ), 1 ) |
END IF |
END IF |
IF( IUPLO.EQ.2 ) THEN |
IF( IUPLO.EQ.2 ) THEN |
QSTART = 5 |
QSTART = 5 |
WSTART = 2*N - 1 |
IF( ICOMPQ .EQ. 2 ) WSTART = 2*N - 1 |
DO 10 I = 1, N - 1 |
DO 10 I = 1, N - 1 |
CALL DLARTG( D( I ), E( I ), CS, SN, R ) |
CALL DLARTG( D( I ), E( I ), CS, SN, R ) |
D( I ) = R |
D( I ) = R |