version 1.13, 2012/12/14 14:22:52
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version 1.19, 2023/08/07 08:39:32
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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 ZLATRD + dependencies |
*> Download ZLATRD + dependencies |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zlatrd.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zlatrd.f"> |
*> [TGZ]</a> |
*> [TGZ]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zlatrd.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zlatrd.f"> |
*> [ZIP]</a> |
*> [ZIP]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zlatrd.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zlatrd.f"> |
*> [TXT]</a> |
*> [TXT]</a> |
*> \endhtmlonly |
*> \endhtmlonly |
* |
* |
* Definition: |
* Definition: |
* =========== |
* =========== |
* |
* |
* SUBROUTINE ZLATRD( UPLO, N, NB, A, LDA, E, TAU, W, LDW ) |
* SUBROUTINE ZLATRD( UPLO, N, NB, A, LDA, E, TAU, W, LDW ) |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
* CHARACTER UPLO |
* CHARACTER UPLO |
* INTEGER LDA, LDW, N, NB |
* INTEGER LDA, LDW, N, NB |
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* DOUBLE PRECISION E( * ) |
* DOUBLE PRECISION E( * ) |
* COMPLEX*16 A( LDA, * ), TAU( * ), W( LDW, * ) |
* COMPLEX*16 A( LDA, * ), TAU( * ), W( LDW, * ) |
* .. |
* .. |
* |
* |
* |
* |
*> \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 |
* |
* |
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* ===================================================================== |
* ===================================================================== |
SUBROUTINE ZLATRD( UPLO, N, NB, A, LDA, E, TAU, W, LDW ) |
SUBROUTINE ZLATRD( UPLO, N, NB, A, LDA, E, TAU, W, LDW ) |
* |
* |
* -- 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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* |
* |
ALPHA = A( I-1, I ) |
ALPHA = A( I-1, I ) |
CALL ZLARFG( I-1, ALPHA, A( 1, I ), 1, TAU( I-1 ) ) |
CALL ZLARFG( I-1, ALPHA, A( 1, I ), 1, TAU( I-1 ) ) |
E( I-1 ) = ALPHA |
E( I-1 ) = DBLE( ALPHA ) |
A( I-1, I ) = ONE |
A( I-1, I ) = ONE |
* |
* |
* Compute W(1:i-1,i) |
* Compute W(1:i-1,i) |
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ALPHA = A( I+1, I ) |
ALPHA = A( I+1, I ) |
CALL ZLARFG( N-I, ALPHA, A( MIN( I+2, N ), I ), 1, |
CALL ZLARFG( N-I, ALPHA, A( MIN( I+2, N ), I ), 1, |
$ TAU( I ) ) |
$ TAU( I ) ) |
E( I ) = ALPHA |
E( I ) = DBLE( ALPHA ) |
A( I+1, I ) = ONE |
A( I+1, I ) = ONE |
* |
* |
* Compute W(i+1:n,i) |
* Compute W(i+1:n,i) |