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

zsyconv.f -


subroutine zsyconv (UPLO, WAY, N, A, LDA, IPIV, WORK, INFO)
 
ZSYCONV

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
Univ. of Colorado Denver
NAG Ltd.
Date:
November 2011
Definition at line 113 of file zsyconv.f.

Generated automatically by Doxygen for LAPACK from the source code.
Sat Nov 16 2013 Version 3.4.2

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