version 1.20, 2018/05/29 07:18:30
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version 1.21, 2023/08/07 08:39:32
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*> \author Univ. of Colorado Denver |
*> \author Univ. of Colorado Denver |
*> \author NAG Ltd. |
*> \author NAG Ltd. |
* |
* |
*> \date November 2017 |
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* |
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*> \ingroup complex16OTHERauxiliary |
*> \ingroup complex16OTHERauxiliary |
* |
* |
*> \par Further Details: |
*> \par Further Details: |
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SUBROUTINE ZLATBS( UPLO, TRANS, DIAG, NORMIN, N, KD, AB, LDAB, X, |
SUBROUTINE ZLATBS( UPLO, TRANS, DIAG, NORMIN, N, KD, AB, LDAB, X, |
$ SCALE, CNORM, INFO ) |
$ SCALE, CNORM, INFO ) |
* |
* |
* -- LAPACK auxiliary routine (version 3.8.0) -- |
* -- 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..-- |
* November 2017 |
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* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
CHARACTER DIAG, NORMIN, TRANS, UPLO |
CHARACTER DIAG, NORMIN, TRANS, UPLO |
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$ ZDOTU, ZLADIV |
$ ZDOTU, ZLADIV |
* .. |
* .. |
* .. External Subroutines .. |
* .. External Subroutines .. |
EXTERNAL DSCAL, XERBLA, ZAXPY, ZDSCAL, ZTBSV, DLABAD |
EXTERNAL DSCAL, XERBLA, ZAXPY, ZDSCAL, ZTBSV |
* .. |
* .. |
* .. Intrinsic Functions .. |
* .. Intrinsic Functions .. |
INTRINSIC ABS, DBLE, DCMPLX, DCONJG, DIMAG, MAX, MIN |
INTRINSIC ABS, DBLE, DCMPLX, DCONJG, DIMAG, MAX, MIN |
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* |
* |
* Quick return if possible |
* Quick return if possible |
* |
* |
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SCALE = ONE |
IF( N.EQ.0 ) |
IF( N.EQ.0 ) |
$ RETURN |
$ RETURN |
* |
* |
* Determine machine dependent parameters to control overflow. |
* Determine machine dependent parameters to control overflow. |
* |
* |
SMLNUM = DLAMCH( 'Safe minimum' ) |
SMLNUM = DLAMCH( 'Safe minimum' ) / DLAMCH( 'Precision' ) |
BIGNUM = ONE / SMLNUM |
BIGNUM = ONE / SMLNUM |
CALL DLABAD( SMLNUM, BIGNUM ) |
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SMLNUM = SMLNUM / DLAMCH( 'Precision' ) |
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BIGNUM = ONE / SMLNUM |
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SCALE = ONE |
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* |
* |
IF( LSAME( NORMIN, 'N' ) ) THEN |
IF( LSAME( NORMIN, 'N' ) ) THEN |
* |
* |