Man page - tpttr(3)

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Manual

tpttr

NAME
SYNOPSIS
Functions
Detailed Description
Function Documentation
subroutine ctpttr (character uplo, integer n, complex, dimension( * ) ap,complex, dimension( lda, * ) a, integer lda, integer info)
subroutine dtpttr (character uplo, integer n, double precision, dimension(* ) ap, double precision, dimension( lda, * ) a, integer lda, integerinfo)
subroutine stpttr (character uplo, integer n, real, dimension( * ) ap,real, dimension( lda, * ) a, integer lda, integer info)
subroutine ztpttr (character uplo, integer n, complex*16, dimension( * )ap, complex*16, dimension( lda, * ) a, integer lda, integer info)
Author

NAME

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

SYNOPSIS

Functions

subroutine ctpttr (uplo, n, ap, a, lda, info)
CTPTTR copies a triangular matrix from the standard packed format (TP) to the standard full format (TR).
subroutine dtpttr (uplo, n, ap, a, lda, info)
DTPTTR copies a triangular matrix from the standard packed format (TP) to the standard full format (TR).
subroutine stpttr (uplo, n, ap, a, lda, info)
STPTTR copies a triangular matrix from the standard packed format (TP) to the standard full format (TR).
subroutine ztpttr (uplo, n, ap, a, lda, info)
ZTPTTR copies a triangular matrix from the standard packed format (TP) to the standard full format (TR).

Detailed Description

Function Documentation

subroutine ctpttr (character uplo, integer n, complex, dimension( * ) ap,complex, dimension( lda, * ) a, integer lda, integer info)

CTPTTR copies a triangular matrix from the standard packed format (TP) to the standard full format (TR).

Purpose:

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

Parameters

UPLO

UPLO is CHARACTER*1
= ā€™Uā€™: A is upper triangular.
= ā€™Lā€™: A is lower triangular.

N

N is INTEGER
The order of the matrix A. N >= 0.

AP

AP is COMPLEX 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 = ā€™Uā€™, AP(i + (j-1)*j/2) = A(i,j) for 1<=i<=j;
if UPLO = ā€™Lā€™, AP(i + (j-1)*(2n-j)/2) = A(i,j) for j<=i<=n.

A

A is COMPLEX array, dimension ( LDA, N )
On exit, the triangular matrix A. If UPLO = ā€™Uā€™, 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 = ā€™Lā€™, 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).

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 dtpttr (character uplo, integer n, double precision, dimension(* ) ap, double precision, dimension( lda, * ) a, integer lda, integerinfo)

DTPTTR copies a triangular matrix from the standard packed format (TP) to the standard full format (TR).

Purpose:

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

Parameters

UPLO

UPLO is CHARACTER*1
= ā€™Uā€™: A is upper triangular.
= ā€™Lā€™: A is lower triangular.

N

N is INTEGER
The order of the matrix A. N >= 0.

AP

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 = ā€™Uā€™, AP(i + (j-1)*j/2) = A(i,j) for 1<=i<=j;
if UPLO = ā€™Lā€™, AP(i + (j-1)*(2n-j)/2) = A(i,j) for j<=i<=n.

A

A is DOUBLE PRECISION array, dimension ( LDA, N )
On exit, the triangular matrix A. If UPLO = ā€™Uā€™, 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 = ā€™Lā€™, 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).

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 stpttr (character uplo, integer n, real, dimension( * ) ap,real, dimension( lda, * ) a, integer lda, integer info)

STPTTR copies a triangular matrix from the standard packed format (TP) to the standard full format (TR).

Purpose:

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

Parameters

UPLO

UPLO is CHARACTER*1
= ā€™Uā€™: A is upper triangular.
= ā€™Lā€™: A is lower triangular.

N

N is INTEGER
The order of the matrix A. N >= 0.

AP

AP is REAL 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 = ā€™Uā€™, AP(i + (j-1)*j/2) = A(i,j) for 1<=i<=j;
if UPLO = ā€™Lā€™, AP(i + (j-1)*(2n-j)/2) = A(i,j) for j<=i<=n.

A

A is REAL array, dimension ( LDA, N )
On exit, the triangular matrix A. If UPLO = ā€™Uā€™, 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 = ā€™Lā€™, 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).

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 ztpttr (character uplo, integer n, complex*16, dimension( * )ap, complex*16, dimension( lda, * ) a, integer lda, integer info)

ZTPTTR copies a triangular matrix from the standard packed format (TP) to the standard full format (TR).

Purpose:

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

Parameters

UPLO

UPLO is CHARACTER*1
= ā€™Uā€™: A is upper triangular.
= ā€™Lā€™: A is lower triangular.

N

N is INTEGER
The order of the matrix A. N >= 0.

AP

AP is COMPLEX*16 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 = ā€™Uā€™, AP(i + (j-1)*j/2) = A(i,j) for 1<=i<=j;
if UPLO = ā€™Lā€™, AP(i + (j-1)*(2n-j)/2) = A(i,j) for j<=i<=n.

A

A is COMPLEX*16 array, dimension ( LDA, N )
On exit, the triangular matrix A. If UPLO = ā€™Uā€™, 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 = ā€™Lā€™, 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).

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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