dsyconv.f man page

dsyconv.f —

Synopsis

Functions/Subroutines

subroutine dsyconv (UPLO, WAY, N, A, LDA, IPIV, WORK, INFO)
DSYCONV

Function/Subroutine Documentation

subroutine dsyconv (characterUPLO, characterWAY, integerN, double precision, dimension( lda, * )A, integerLDA, integer, dimension( * )IPIV, double precision, dimension( * )WORK, integerINFO)

DSYCONV

Purpose:

DSYCONV convert A given by TRF into L and D and vice-versa.
Get Non-diag elements of D (returned in workspace) and 
apply or reverse permutation done in TRF.

Parameters:

UPLO

UPLO is CHARACTER*1
Specifies whether the details of the factorization are stored
as an upper or lower triangular matrix.
= 'U':  Upper triangular, form is A = U*D*U**T;
= 'L':  Lower triangular, form is A = L*D*L**T.

WAY

WAY is CHARACTER*1
= 'C': Convert 
= 'R': Revert

N

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

A

A is DOUBLE PRECISION array, dimension (LDA,N)
The block diagonal matrix D and the multipliers used to
obtain the factor U or L as computed by DSYTRF.

LDA

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

IPIV

IPIV is INTEGER array, dimension (N)
Details of the interchanges and the block structure of D
as determined by DSYTRF.

WORK

WORK is DOUBLE PRECISION array, dimension (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.

Date:

November 2011

Definition at line 113 of file dsyconv.f.

Author

Generated automatically by Doxygen for LAPACK from the source code.

Referenced By

dsyconv(3) is an alias of dsyconv.f(3).

Sat Nov 16 2013 Version 3.4.2 LAPACK