version 1.3, 2010/08/13 21:04:00
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version 1.15, 2018/05/29 07:18:11
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SUBROUTINE DTPTTR( UPLO, N, AP, A, LDA, INFO ) |
*> \brief \b DTPTTR copies a triangular matrix from the standard packed format (TP) to the standard full format (TR). |
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* |
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* =========== DOCUMENTATION =========== |
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* |
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* Online html documentation available at |
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* http://www.netlib.org/lapack/explore-html/ |
* |
* |
* -- LAPACK routine (version 3.2) -- |
*> \htmlonly |
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*> Download DTPTTR + dependencies |
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*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dtpttr.f"> |
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*> [TGZ]</a> |
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*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dtpttr.f"> |
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*> [ZIP]</a> |
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*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dtpttr.f"> |
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*> [TXT]</a> |
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*> \endhtmlonly |
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* |
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* Definition: |
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* =========== |
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* |
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* SUBROUTINE DTPTTR( UPLO, N, AP, A, LDA, INFO ) |
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* |
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* .. Scalar Arguments .. |
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* CHARACTER UPLO |
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* INTEGER INFO, N, LDA |
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* .. |
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* .. Array Arguments .. |
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* DOUBLE PRECISION A( LDA, * ), AP( * ) |
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* .. |
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* |
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* |
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*> \par Purpose: |
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* ============= |
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*> |
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*> \verbatim |
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*> |
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*> DTPTTR copies a triangular matrix A from standard packed format (TP) |
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*> to standard full format (TR). |
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*> \endverbatim |
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* |
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* Arguments: |
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* ========== |
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* |
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*> \param[in] UPLO |
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*> \verbatim |
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*> UPLO is CHARACTER*1 |
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*> = 'U': A is upper triangular. |
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*> = 'L': A is lower triangular. |
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*> \endverbatim |
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*> |
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*> \param[in] N |
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*> \verbatim |
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*> N is INTEGER |
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*> The order of the matrix A. N >= 0. |
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*> \endverbatim |
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*> |
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*> \param[in] AP |
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*> \verbatim |
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*> AP is DOUBLE PRECISION array, dimension ( N*(N+1)/2 ), |
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*> On entry, the upper or lower triangular matrix A, packed |
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*> columnwise in a linear array. The j-th column of A is stored |
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*> in the array AP as follows: |
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*> if UPLO = 'U', AP(i + (j-1)*j/2) = A(i,j) for 1<=i<=j; |
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*> if UPLO = 'L', AP(i + (j-1)*(2n-j)/2) = A(i,j) for j<=i<=n. |
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*> \endverbatim |
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*> |
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*> \param[out] A |
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*> \verbatim |
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*> A is DOUBLE PRECISION array, dimension ( LDA, N ) |
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*> On exit, the triangular matrix A. If UPLO = 'U', the leading |
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*> N-by-N upper triangular part of A contains the upper |
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*> triangular part of the matrix A, and the strictly lower |
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*> triangular part of A is not referenced. If UPLO = 'L', the |
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*> leading N-by-N lower triangular part of A contains the lower |
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*> triangular part of the matrix A, and the strictly upper |
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*> triangular part of A is not referenced. |
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*> \endverbatim |
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*> |
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*> \param[in] LDA |
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*> \verbatim |
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*> LDA is INTEGER |
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*> The leading dimension of the array A. LDA >= max(1,N). |
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*> \endverbatim |
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*> |
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*> \param[out] INFO |
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*> \verbatim |
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*> INFO is INTEGER |
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*> = 0: successful exit |
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*> < 0: if INFO = -i, the i-th argument had an illegal value |
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*> \endverbatim |
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* |
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* Authors: |
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* ======== |
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* |
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*> \author Univ. of Tennessee |
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*> \author Univ. of California Berkeley |
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*> \author Univ. of Colorado Denver |
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*> \author NAG Ltd. |
* |
* |
* -- Contributed by Julien Langou of the Univ. of Colorado Denver -- |
*> \date December 2016 |
* -- November 2008 -- |
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* |
* |
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*> \ingroup doubleOTHERcomputational |
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* |
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* ===================================================================== |
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SUBROUTINE DTPTTR( UPLO, N, AP, A, LDA, INFO ) |
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* |
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* -- 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..-- |
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* December 2016 |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
CHARACTER UPLO |
CHARACTER UPLO |
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DOUBLE PRECISION A( LDA, * ), AP( * ) |
DOUBLE PRECISION A( LDA, * ), AP( * ) |
* .. |
* .. |
* |
* |
* Purpose |
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* ======= |
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* |
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* DTPTTR copies a triangular matrix A from standard packed format (TP) |
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* to standard full format (TR). |
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* |
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* Arguments |
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* ========= |
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* |
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* UPLO (input) CHARACTER |
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* = 'U': A is upper triangular. |
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* = 'L': A is lower triangular. |
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* |
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* N (input) INTEGER |
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* The order of the matrix A. N >= 0. |
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* |
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* AP (input) DOUBLE PRECISION array, dimension ( N*(N+1)/2 ), |
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* On entry, the upper or lower triangular matrix A, packed |
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* columnwise in a linear array. The j-th column of A is stored |
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* in the array AP as follows: |
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* if UPLO = 'U', AP(i + (j-1)*j/2) = A(i,j) for 1<=i<=j; |
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* if UPLO = 'L', AP(i + (j-1)*(2n-j)/2) = A(i,j) for j<=i<=n. |
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* |
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* A (output) DOUBLE PRECISION array, dimension ( LDA, N ) |
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* On exit, the triangular matrix A. If UPLO = 'U', the leading |
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* N-by-N upper triangular part of A contains the upper |
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* triangular part of the matrix A, and the strictly lower |
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* triangular part of A is not referenced. If UPLO = 'L', the |
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* leading N-by-N lower triangular part of A contains the lower |
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* triangular part of the matrix A, and the strictly upper |
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* triangular part of A is not referenced. |
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* |
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* LDA (input) INTEGER |
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* The leading dimension of the array A. LDA >= max(1,N). |
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* |
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* INFO (output) INTEGER |
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* = 0: successful exit |
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* < 0: if INFO = -i, the i-th argument had an illegal value |
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* |
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* ===================================================================== |
* ===================================================================== |
* |
* |
* .. Parameters .. |
* .. Parameters .. |