--- rpl/lapack/lapack/dtpttr.f 2010/12/21 13:53:40 1.5 +++ rpl/lapack/lapack/dtpttr.f 2011/11/21 20:43:06 1.6 @@ -1,12 +1,113 @@ - SUBROUTINE DTPTTR( UPLO, N, AP, A, LDA, INFO ) +*> \brief \b DTPTTR +* +* =========== DOCUMENTATION =========== +* +* Online html documentation available at +* http://www.netlib.org/lapack/explore-html/ * -* -- LAPACK routine (version 3.3.0) -- +*> \htmlonly +*> Download DTPTTR + dependencies +*> +*> [TGZ] +*> +*> [ZIP] +*> +*> [TXT] +*> \endhtmlonly +* +* Definition: +* =========== +* +* SUBROUTINE DTPTTR( UPLO, N, AP, A, LDA, INFO ) +* +* .. Scalar Arguments .. +* CHARACTER UPLO +* INTEGER INFO, N, LDA +* .. +* .. Array Arguments .. +* DOUBLE PRECISION A( LDA, * ), AP( * ) +* .. +* +* +*> \par Purpose: +* ============= +*> +*> \verbatim +*> +*> DTPTTR copies a triangular matrix A from standard packed format (TP) +*> to standard full format (TR). +*> \endverbatim +* +* Arguments: +* ========== +* +*> \param[in] UPLO +*> \verbatim +*> UPLO is CHARACTER*1 +*> = 'U': A is upper triangular. +*> = 'L': A is lower triangular. +*> \endverbatim +*> +*> \param[in] N +*> \verbatim +*> N is INTEGER +*> The order of the matrix A. N >= 0. +*> \endverbatim +*> +*> \param[in] AP +*> \verbatim +*> AP is DOUBLE PRECISION array, dimension ( N*(N+1)/2 ), +*> On entry, the upper or lower triangular matrix A, packed +*> columnwise in a linear array. The j-th column of A is stored +*> in the array AP as follows: +*> if UPLO = 'U', AP(i + (j-1)*j/2) = A(i,j) for 1<=i<=j; +*> if UPLO = 'L', AP(i + (j-1)*(2n-j)/2) = A(i,j) for j<=i<=n. +*> \endverbatim +*> +*> \param[out] A +*> \verbatim +*> A is DOUBLE PRECISION array, dimension ( LDA, N ) +*> On exit, the triangular matrix A. If UPLO = 'U', the leading +*> N-by-N upper triangular part of A contains the upper +*> triangular part of the matrix A, and the strictly lower +*> triangular part of A is not referenced. If UPLO = 'L', the +*> leading N-by-N lower triangular part of A contains the lower +*> triangular part of the matrix A, and the strictly upper +*> triangular part of A is not referenced. +*> \endverbatim +*> +*> \param[in] LDA +*> \verbatim +*> LDA is INTEGER +*> The leading dimension of the array A. LDA >= max(1,N). +*> \endverbatim +*> +*> \param[out] INFO +*> \verbatim +*> INFO is INTEGER +*> = 0: successful exit +*> < 0: if INFO = -i, the i-th argument had an illegal value +*> \endverbatim +* +* Authors: +* ======== +* +*> \author Univ. of Tennessee +*> \author Univ. of California Berkeley +*> \author Univ. of Colorado Denver +*> \author NAG Ltd. * -* -- Contributed by Julien Langou of the Univ. of Colorado Denver -- -* November 2010 -- +*> \date November 2011 * +*> \ingroup doubleOTHERcomputational +* +* ===================================================================== + SUBROUTINE DTPTTR( UPLO, N, AP, A, LDA, INFO ) +* +* -- LAPACK computational routine (version 3.4.0) -- * -- LAPACK is a software package provided by Univ. of Tennessee, -- * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..-- +* November 2011 * * .. Scalar Arguments .. CHARACTER UPLO @@ -16,45 +117,6 @@ DOUBLE PRECISION A( LDA, * ), AP( * ) * .. * -* Purpose -* ======= -* -* DTPTTR copies a triangular matrix A from standard packed format (TP) -* to standard full format (TR). -* -* Arguments -* ========= -* -* UPLO (input) CHARACTER*1 -* = 'U': A is upper triangular. -* = 'L': A is lower triangular. -* -* N (input) INTEGER -* The order of the matrix A. N >= 0. -* -* AP (input) DOUBLE PRECISION array, dimension ( N*(N+1)/2 ), -* On entry, the upper or lower triangular matrix A, packed -* columnwise in a linear array. The j-th column of A is stored -* in the array AP as follows: -* if UPLO = 'U', AP(i + (j-1)*j/2) = A(i,j) for 1<=i<=j; -* if UPLO = 'L', AP(i + (j-1)*(2n-j)/2) = A(i,j) for j<=i<=n. -* -* A (output) DOUBLE PRECISION array, dimension ( LDA, N ) -* On exit, the triangular matrix A. If UPLO = 'U', the leading -* N-by-N upper triangular part of A contains the upper -* triangular part of the matrix A, and the strictly lower -* triangular part of A is not referenced. If UPLO = 'L', the -* leading N-by-N lower triangular part of A contains the lower -* triangular part of the matrix A, and the strictly upper -* triangular part of A is not referenced. -* -* LDA (input) INTEGER -* The leading dimension of the array A. LDA >= max(1,N). -* -* INFO (output) INTEGER -* = 0: successful exit -* < 0: if INFO = -i, the i-th argument had an illegal value -* * ===================================================================== * * .. Parameters ..