subroutine zsyconv (UPLO, WAY, N, A, LDA, IPIV, WORK, INFO)
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.
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': RevertN
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
Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd.Date:
November 2011Definition at line 113 of file zsyconv.f.