version 1.19, 2018/05/29 07:18:13
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version 1.20, 2023/08/07 08:39:16
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*> \author Univ. of Colorado Denver |
*> \author Univ. of Colorado Denver |
*> \author NAG Ltd. |
*> \author NAG Ltd. |
* |
* |
*> \date June 2017 |
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* |
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*> \ingroup complex16GEcomputational |
*> \ingroup complex16GEcomputational |
* |
* |
*> \par Further Details: |
*> \par Further Details: |
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* ===================================================================== |
* ===================================================================== |
SUBROUTINE ZGEBD2( M, N, A, LDA, D, E, TAUQ, TAUP, WORK, INFO ) |
SUBROUTINE ZGEBD2( M, N, A, LDA, D, E, TAUQ, TAUP, WORK, INFO ) |
* |
* |
* -- LAPACK computational routine (version 3.7.1) -- |
* -- 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 2017 |
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* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
INTEGER INFO, LDA, M, N |
INTEGER INFO, LDA, M, N |
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ALPHA = A( I, I ) |
ALPHA = A( I, I ) |
CALL ZLARFG( M-I+1, ALPHA, A( MIN( I+1, M ), I ), 1, |
CALL ZLARFG( M-I+1, ALPHA, A( MIN( I+1, M ), I ), 1, |
$ TAUQ( I ) ) |
$ TAUQ( I ) ) |
D( I ) = ALPHA |
D( I ) = DBLE( ALPHA ) |
A( I, I ) = ONE |
A( I, I ) = ONE |
* |
* |
* Apply H(i)**H to A(i:m,i+1:n) from the left |
* Apply H(i)**H to A(i:m,i+1:n) from the left |
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ALPHA = A( I, I+1 ) |
ALPHA = A( I, I+1 ) |
CALL ZLARFG( N-I, ALPHA, A( I, MIN( I+2, N ) ), LDA, |
CALL ZLARFG( N-I, ALPHA, A( I, MIN( I+2, N ) ), LDA, |
$ TAUP( I ) ) |
$ TAUP( I ) ) |
E( I ) = ALPHA |
E( I ) = DBLE( ALPHA ) |
A( I, I+1 ) = ONE |
A( I, I+1 ) = ONE |
* |
* |
* Apply G(i) to A(i+1:m,i+1:n) from the right |
* Apply G(i) to A(i+1:m,i+1:n) from the right |
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ALPHA = A( I, I ) |
ALPHA = A( I, I ) |
CALL ZLARFG( N-I+1, ALPHA, A( I, MIN( I+1, N ) ), LDA, |
CALL ZLARFG( N-I+1, ALPHA, A( I, MIN( I+1, N ) ), LDA, |
$ TAUP( I ) ) |
$ TAUP( I ) ) |
D( I ) = ALPHA |
D( I ) = DBLE( ALPHA ) |
A( I, I ) = ONE |
A( I, I ) = ONE |
* |
* |
* Apply G(i) to A(i+1:m,i:n) from the right |
* Apply G(i) to A(i+1:m,i:n) from the right |
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ALPHA = A( I+1, I ) |
ALPHA = A( I+1, I ) |
CALL ZLARFG( M-I, ALPHA, A( MIN( I+2, M ), I ), 1, |
CALL ZLARFG( M-I, ALPHA, A( MIN( I+2, M ), I ), 1, |
$ TAUQ( I ) ) |
$ TAUQ( I ) ) |
E( I ) = ALPHA |
E( I ) = DBLE( ALPHA ) |
A( I+1, I ) = ONE |
A( I+1, I ) = ONE |
* |
* |
* Apply H(i)**H to A(i+1:m,i+1:n) from the left |
* Apply H(i)**H to A(i+1:m,i+1:n) from the left |