version 1.13, 2012/12/14 14:22:52
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version 1.19, 2023/08/07 08:39:33
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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 ZLAUU2 + dependencies |
*> Download ZLAUU2 + dependencies |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zlauu2.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zlauu2.f"> |
*> [TGZ]</a> |
*> [TGZ]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zlauu2.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zlauu2.f"> |
*> [ZIP]</a> |
*> [ZIP]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zlauu2.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zlauu2.f"> |
*> [TXT]</a> |
*> [TXT]</a> |
*> \endhtmlonly |
*> \endhtmlonly |
* |
* |
* Definition: |
* Definition: |
* =========== |
* =========== |
* |
* |
* SUBROUTINE ZLAUU2( UPLO, N, A, LDA, INFO ) |
* SUBROUTINE ZLAUU2( UPLO, N, A, LDA, INFO ) |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
* CHARACTER UPLO |
* CHARACTER UPLO |
* INTEGER INFO, LDA, N |
* INTEGER INFO, LDA, N |
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* .. Array Arguments .. |
* .. Array Arguments .. |
* COMPLEX*16 A( LDA, * ) |
* COMPLEX*16 A( LDA, * ) |
* .. |
* .. |
* |
* |
* |
* |
*> \par Purpose: |
*> \par Purpose: |
* ============= |
* ============= |
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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. |
* |
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*> \date September 2012 |
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* |
* |
*> \ingroup complex16OTHERauxiliary |
*> \ingroup complex16OTHERauxiliary |
* |
* |
* ===================================================================== |
* ===================================================================== |
SUBROUTINE ZLAUU2( UPLO, N, A, LDA, INFO ) |
SUBROUTINE ZLAUU2( UPLO, N, A, LDA, INFO ) |
* |
* |
* -- LAPACK auxiliary routine (version 3.4.2) -- |
* -- 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..-- |
* September 2012 |
|
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
CHARACTER UPLO |
CHARACTER UPLO |
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* Compute the product U * U**H. |
* Compute the product U * U**H. |
* |
* |
DO 10 I = 1, N |
DO 10 I = 1, N |
AII = A( I, I ) |
AII = DBLE( A( I, I ) ) |
IF( I.LT.N ) THEN |
IF( I.LT.N ) THEN |
A( I, I ) = AII*AII + DBLE( ZDOTC( N-I, A( I, I+1 ), LDA, |
A( I, I ) = AII*AII + DBLE( ZDOTC( N-I, A( I, I+1 ), LDA, |
$ A( I, I+1 ), LDA ) ) |
$ A( I, I+1 ), LDA ) ) |
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* Compute the product L**H * L. |
* Compute the product L**H * L. |
* |
* |
DO 20 I = 1, N |
DO 20 I = 1, N |
AII = A( I, I ) |
AII = DBLE( A( I, I ) ) |
IF( I.LT.N ) THEN |
IF( I.LT.N ) THEN |
A( I, I ) = AII*AII + DBLE( ZDOTC( N-I, A( I+1, I ), 1, |
A( I, I ) = AII*AII + DBLE( ZDOTC( N-I, A( I+1, I ), 1, |
$ A( I+1, I ), 1 ) ) |
$ A( I+1, I ), 1 ) ) |