# zsyconv(3) [centos man page]

```zsyconv.f(3)							      LAPACK							      zsyconv.f(3)

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 vice-versa.
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.

WAY

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

N

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

A

A 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.

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 ZSYTRF.

WORK

WORK is COMPLEX*16 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

NAG Ltd.

Date:
November 2011

Definition at line 113 of file zsyconv.f.

Author
Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.2							  Tue Sep 25 2012						      zsyconv.f(3)```

## Check Out this Related Man Page

```csyconv.f(3)							      LAPACK							      csyconv.f(3)

NAME
csyconv.f -

SYNOPSIS
Functions/Subroutines
subroutine csyconv (UPLO, WAY, N, A, LDA, IPIV, WORK, INFO)
CSYCONV

Function/Subroutine Documentation
subroutine csyconv (characterUPLO, characterWAY, integerN, complex, dimension( lda, * )A, integerLDA, integer, dimension( * )IPIV, complex,
dimension( * )WORK, integerINFO)
CSYCONV

Purpose:

CSYCONV 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 COMPLEX array, dimension (LDA,N)
The block diagonal matrix D and the multipliers used to
obtain the factor U or L as computed by CSYTRF.

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 CSYTRF.

WORK

WORK is COMPLEX 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