version 1.2, 2017/06/17 11:06:34
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version 1.5, 2023/08/07 08:39:08
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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 doubleSYeigen |
*> \ingroup doubleSYeigen |
* |
* |
*> \par Further Details: |
*> \par Further Details: |
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* |
* |
IMPLICIT NONE |
IMPLICIT NONE |
* |
* |
* -- LAPACK driver routine (version 3.7.0) -- |
* -- LAPACK driver 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 JOBZ, RANGE, UPLO |
CHARACTER JOBZ, RANGE, UPLO |
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* .. |
* .. |
* .. External Functions .. |
* .. External Functions .. |
LOGICAL LSAME |
LOGICAL LSAME |
INTEGER ILAENV |
INTEGER ILAENV2STAGE |
DOUBLE PRECISION DLAMCH, DLANSY |
DOUBLE PRECISION DLAMCH, DLANSY |
EXTERNAL LSAME, ILAENV, DLAMCH, DLANSY |
EXTERNAL LSAME, DLAMCH, DLANSY, ILAENV2STAGE |
* .. |
* .. |
* .. External Subroutines .. |
* .. External Subroutines .. |
EXTERNAL DCOPY, DLACPY, DORGTR, DORMTR, DSCAL, DSTEBZ, |
EXTERNAL DCOPY, DLACPY, DORGTR, DORMTR, DSCAL, DSTEBZ, |
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LWMIN = 1 |
LWMIN = 1 |
WORK( 1 ) = LWMIN |
WORK( 1 ) = LWMIN |
ELSE |
ELSE |
KD = ILAENV( 17, 'DSYTRD_2STAGE', JOBZ, N, -1, -1, -1 ) |
KD = ILAENV2STAGE( 1, 'DSYTRD_2STAGE', JOBZ, |
IB = ILAENV( 18, 'DSYTRD_2STAGE', JOBZ, N, KD, -1, -1 ) |
$ N, -1, -1, -1 ) |
LHTRD = ILAENV( 19, 'DSYTRD_2STAGE', JOBZ, N, KD, IB, -1 ) |
IB = ILAENV2STAGE( 2, 'DSYTRD_2STAGE', JOBZ, |
LWTRD = ILAENV( 20, 'DSYTRD_2STAGE', JOBZ, N, KD, IB, -1 ) |
$ N, KD, -1, -1 ) |
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LHTRD = ILAENV2STAGE( 3, 'DSYTRD_2STAGE', JOBZ, |
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$ N, KD, IB, -1 ) |
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LWTRD = ILAENV2STAGE( 4, 'DSYTRD_2STAGE', JOBZ, |
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$ N, KD, IB, -1 ) |
LWMIN = MAX( 8*N, 3*N + LHTRD + LWTRD ) |
LWMIN = MAX( 8*N, 3*N + LHTRD + LWTRD ) |
WORK( 1 ) = LWMIN |
WORK( 1 ) = LWMIN |
END IF |
END IF |