Provided by: liblapack-doc_3.12.0-3build1.1_all bug

NAME

       trttp - trttp: triangular matrix, full (tr) to packed (tp)

SYNOPSIS

   Functions
       subroutine ctrttp (uplo, n, a, lda, ap, info)
           CTRTTP copies a triangular matrix from the standard full format (TR) to the standard packed format
           (TP).
       subroutine dtrttp (uplo, n, a, lda, ap, info)
           DTRTTP copies a triangular matrix from the standard full format (TR) to the standard packed format
           (TP).
       subroutine strttp (uplo, n, a, lda, ap, info)
           STRTTP copies a triangular matrix from the standard full format (TR) to the standard packed format
           (TP).
       subroutine ztrttp (uplo, n, a, lda, ap, info)
           ZTRTTP copies a triangular matrix from the standard full format (TR) to the standard packed format
           (TP).

Detailed Description

Function Documentation

   subroutine ctrttp (character uplo, integer n, complex, dimension( lda, * ) a, integer lda, complex,
       dimension( * ) ap, integer info)
       CTRTTP copies a triangular matrix from the standard full format (TR) to the standard packed format (TP).

       Purpose:

            CTRTTP copies a triangular matrix A from full format (TR) to standard
            packed format (TP).

       Parameters
           UPLO

                     UPLO is CHARACTER*1
                     = 'U':  A is upper triangular;
                     = 'L':  A is lower triangular.

           N

                     N is INTEGER
                     The order of the matrices AP and A.  N >= 0.

           A

                     A is COMPLEX array, dimension (LDA,N)
                     On entry, 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

                     LDA is INTEGER
                     The leading dimension of the array A.  LDA >= max(1,N).

           AP

                     AP is COMPLEX array, dimension ( N*(N+1)/2 ),
                     On exit, 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.

           INFO

                     INFO is INTEGER
                     = 0:  successful exit
                     < 0:  if INFO = -i, the i-th argument had an illegal value

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

   subroutine dtrttp (character uplo, integer n, double precision, dimension( lda, * ) a, integer lda, double
       precision, dimension( * ) ap, integer info)
       DTRTTP copies a triangular matrix from the standard full format (TR) to the standard packed format (TP).

       Purpose:

            DTRTTP copies a triangular matrix A from full format (TR) to standard
            packed format (TP).

       Parameters
           UPLO

                     UPLO is CHARACTER*1
                     = 'U':  A is upper triangular.
                     = 'L':  A is lower triangular.

           N

                     N is INTEGER
                     The order of the matrices AP and A.  N >= 0.

           A

                     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.

           LDA

                     LDA is INTEGER
                     The leading dimension of the array A.  LDA >= max(1,N).

           AP

                     AP is DOUBLE PRECISION array, dimension (N*(N+1)/2)
                     On exit, 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.

           INFO

                     INFO is INTEGER
                     = 0:  successful exit
                     < 0:  if INFO = -i, the i-th argument had an illegal value

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

   subroutine strttp (character uplo, integer n, real, dimension( lda, * ) a, integer lda, real, dimension( * )
       ap, integer info)
       STRTTP copies a triangular matrix from the standard full format (TR) to the standard packed format (TP).

       Purpose:

            STRTTP copies a triangular matrix A from full format (TR) to standard
            packed format (TP).

       Parameters
           UPLO

                     UPLO is CHARACTER*1
                     = 'U':  A is upper triangular.
                     = 'L':  A is lower triangular.

           N

                     N is INTEGER
                     The order of the matrices AP and A.  N >= 0.

           A

                     A is REAL 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

                     LDA is INTEGER
                     The leading dimension of the array A.  LDA >= max(1,N).

           AP

                     AP is REAL array, dimension (N*(N+1)/2)
                     On exit, 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.

           INFO

                     INFO is INTEGER
                     = 0:  successful exit
                     < 0:  if INFO = -i, the i-th argument had an illegal value

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

   subroutine ztrttp (character uplo, integer n, complex*16, dimension( lda, * ) a, integer lda, complex*16,
       dimension( * ) ap, integer info)
       ZTRTTP copies a triangular matrix from the standard full format (TR) to the standard packed format (TP).

       Purpose:

            ZTRTTP copies a triangular matrix A from full format (TR) to standard
            packed format (TP).

       Parameters
           UPLO

                     UPLO is CHARACTER*1
                     = 'U':  A is upper triangular;
                     = 'L':  A is lower triangular.

           N

                     N is INTEGER
                     The order of the matrices AP and A.  N >= 0.

           A

                     A is COMPLEX*16 array, dimension (LDA,N)
                     On entry, 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

                     LDA is INTEGER
                     The leading dimension of the array A.  LDA >= max(1,N).

           AP

                     AP is COMPLEX*16 array, dimension ( N*(N+1)/2 ),
                     On exit, 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.

           INFO

                     INFO is INTEGER
                     = 0:  successful exit
                     < 0:  if INFO = -i, the i-th argument had an illegal value

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

Author

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Version 3.12.0                               Fri Aug 9 2024 02:33:22                                    trttp(3)