version 1.4, 2011/11/21 20:43:21
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version 1.11, 2017/06/17 10:54:28
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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 ZSYCONV + dependencies |
*> Download ZSYCONV + dependencies |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zsyconv.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zsyconv.f"> |
*> [TGZ]</a> |
*> [TGZ]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zsyconv.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zsyconv.f"> |
*> [ZIP]</a> |
*> [ZIP]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zsyconv.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zsyconv.f"> |
*> [TXT]</a> |
*> [TXT]</a> |
*> \endhtmlonly |
*> \endhtmlonly |
* |
* |
* Definition: |
* Definition: |
* =========== |
* =========== |
* |
* |
* SUBROUTINE ZSYCONV( UPLO, WAY, N, A, LDA, IPIV, WORK, INFO ) |
* SUBROUTINE ZSYCONV( UPLO, WAY, N, A, LDA, IPIV, E, INFO ) |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
* CHARACTER UPLO, WAY |
* CHARACTER UPLO, WAY |
* INTEGER INFO, LDA, N |
* INTEGER INFO, LDA, N |
* .. |
* .. |
* .. Array Arguments .. |
* .. Array Arguments .. |
* INTEGER IPIV( * ) |
* INTEGER IPIV( * ) |
* COMPLEX*16 A( LDA, * ), WORK( * ) |
* COMPLEX*16 A( LDA, * ), E( * ) |
* .. |
* .. |
* |
* |
* |
* |
*> \par Purpose: |
*> \par Purpose: |
* ============= |
* ============= |
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*> \verbatim |
*> \verbatim |
*> |
*> |
*> ZSYCONV converts A given by ZHETRF into L and D or vice-versa. |
*> ZSYCONV converts A given by ZHETRF into L and D or vice-versa. |
*> Get nondiagonal elements of D (returned in workspace) and |
*> Get nondiagonal elements of D (returned in workspace) and |
*> apply or reverse permutation done in TRF. |
*> apply or reverse permutation done in TRF. |
*> \endverbatim |
*> \endverbatim |
* |
* |
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*> \param[in] WAY |
*> \param[in] WAY |
*> \verbatim |
*> \verbatim |
*> WAY is CHARACTER*1 |
*> WAY is CHARACTER*1 |
*> = 'C': Convert |
*> = 'C': Convert |
*> = 'R': Revert |
*> = 'R': Revert |
*> \endverbatim |
*> \endverbatim |
*> |
*> |
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*> The order of the matrix A. N >= 0. |
*> The order of the matrix A. N >= 0. |
*> \endverbatim |
*> \endverbatim |
*> |
*> |
*> \param[in] A |
*> \param[in,out] A |
*> \verbatim |
*> \verbatim |
*> A is COMPLEX*16 array, dimension (LDA,N) |
*> A is COMPLEX*16 array, dimension (LDA,N) |
*> The block diagonal matrix D and the multipliers used to |
*> The block diagonal matrix D and the multipliers used to |
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*> as determined by ZSYTRF. |
*> as determined by ZSYTRF. |
*> \endverbatim |
*> \endverbatim |
*> |
*> |
*> \param[out] WORK |
*> \param[out] E |
*> \verbatim |
*> \verbatim |
*> WORK is COMPLEX*16 array, dimension (N) |
*> E is COMPLEX*16 array, dimension (N) |
|
*> E stores the supdiagonal/subdiagonal of the symmetric 1-by-1 |
|
*> or 2-by-2 block diagonal matrix D in LDLT. |
*> \endverbatim |
*> \endverbatim |
*> |
*> |
*> \param[out] INFO |
*> \param[out] INFO |
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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. |
* |
* |
*> \date November 2011 |
*> \date December 2016 |
* |
* |
*> \ingroup complex16SYcomputational |
*> \ingroup complex16SYcomputational |
* |
* |
* ===================================================================== |
* ===================================================================== |
SUBROUTINE ZSYCONV( UPLO, WAY, N, A, LDA, IPIV, WORK, INFO ) |
SUBROUTINE ZSYCONV( UPLO, WAY, N, A, LDA, IPIV, E, INFO ) |
* |
* |
* -- LAPACK computational routine (version 3.4.0) -- |
* -- LAPACK computational routine (version 3.7.0) -- |
* -- 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 2011 |
* December 2016 |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
CHARACTER UPLO, WAY |
CHARACTER UPLO, WAY |
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* .. |
* .. |
* .. Array Arguments .. |
* .. Array Arguments .. |
INTEGER IPIV( * ) |
INTEGER IPIV( * ) |
COMPLEX*16 A( LDA, * ), WORK( * ) |
COMPLEX*16 A( LDA, * ), E( * ) |
* .. |
* .. |
* |
* |
* ===================================================================== |
* ===================================================================== |
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* Convert VALUE |
* Convert VALUE |
* |
* |
I=N |
I=N |
WORK(1)=ZERO |
E(1)=ZERO |
DO WHILE ( I .GT. 1 ) |
DO WHILE ( I .GT. 1 ) |
IF( IPIV(I) .LT. 0 ) THEN |
IF( IPIV(I) .LT. 0 ) THEN |
WORK(I)=A(I-1,I) |
E(I)=A(I-1,I) |
|
E(I-1)=ZERO |
A(I-1,I)=ZERO |
A(I-1,I)=ZERO |
I=I-1 |
I=I-1 |
ELSE |
ELSE |
WORK(I)=ZERO |
E(I)=ZERO |
ENDIF |
ENDIF |
I=I-1 |
I=I-1 |
END DO |
END DO |
* |
* |
* Convert PERMUTATIONS |
* Convert PERMUTATIONS |
* |
* |
I=N |
I=N |
DO WHILE ( I .GE. 1 ) |
DO WHILE ( I .GE. 1 ) |
IF( IPIV(I) .GT. 0) THEN |
IF( IPIV(I) .GT. 0) THEN |
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* Revert A (A is upper) |
* Revert A (A is upper) |
* |
* |
* Revert PERMUTATIONS |
* Revert PERMUTATIONS |
* |
* |
I=1 |
I=1 |
DO WHILE ( I .LE. N ) |
DO WHILE ( I .LE. N ) |
IF( IPIV(I) .GT. 0 ) THEN |
IF( IPIV(I) .GT. 0 ) THEN |
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I=N |
I=N |
DO WHILE ( I .GT. 1 ) |
DO WHILE ( I .GT. 1 ) |
IF( IPIV(I) .LT. 0 ) THEN |
IF( IPIV(I) .LT. 0 ) THEN |
A(I-1,I)=WORK(I) |
A(I-1,I)=E(I) |
I=I-1 |
I=I-1 |
ENDIF |
ENDIF |
I=I-1 |
I=I-1 |
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* Convert VALUE |
* Convert VALUE |
* |
* |
I=1 |
I=1 |
WORK(N)=ZERO |
E(N)=ZERO |
DO WHILE ( I .LE. N ) |
DO WHILE ( I .LE. N ) |
IF( I.LT.N .AND. IPIV(I) .LT. 0 ) THEN |
IF( I.LT.N .AND. IPIV(I) .LT. 0 ) THEN |
WORK(I)=A(I+1,I) |
E(I)=A(I+1,I) |
|
E(I+1)=ZERO |
A(I+1,I)=ZERO |
A(I+1,I)=ZERO |
I=I+1 |
I=I+1 |
ELSE |
ELSE |
WORK(I)=ZERO |
E(I)=ZERO |
ENDIF |
ENDIF |
I=I+1 |
I=I+1 |
END DO |
END DO |
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I=1 |
I=1 |
DO WHILE ( I .LE. N-1 ) |
DO WHILE ( I .LE. N-1 ) |
IF( IPIV(I) .LT. 0 ) THEN |
IF( IPIV(I) .LT. 0 ) THEN |
A(I+1,I)=WORK(I) |
A(I+1,I)=E(I) |
I=I+1 |
I=I+1 |
ENDIF |
ENDIF |
I=I+1 |
I=I+1 |