zsyconv.f (3)  Linux Manuals
NAME
zsyconv.f 
SYNOPSIS
Functions/Subroutines
subroutine zsyconv (UPLO, WAY, N, A, LDA, IPIV, WORK, INFO)
ZSYCONV
Function/Subroutine Documentation
subroutine zsyconv (characterUPLO, characterWAY, integerN, complex*16, dimension( lda, * )A, integerLDA, integer, dimension( * )IPIV, complex*16, dimension( * )WORK, integerINFO)
ZSYCONV
Purpose:

ZSYCONV converts A given by ZHETRF into L and D or viceversa. Get nondiagonal 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.
WAYWAY is CHARACTER*1 = 'C': Convert = 'R': Revert
NN is INTEGER The order of the matrix A. N >= 0.
AA is COMPLEX*16 array, dimension (LDA,N) The block diagonal matrix D and the multipliers used to obtain the factor U or L as computed by ZSYTRF.
LDALDA is INTEGER The leading dimension of the array A. LDA >= max(1,N).
IPIVIPIV is INTEGER array, dimension (N) Details of the interchanges and the block structure of D as determined by ZSYTRF.
WORKWORK is COMPLEX*16 array, dimension (N)
INFOINFO is INTEGER = 0: successful exit < 0: if INFO = i, the ith 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 zsyconv.f.
Author
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