```                    CXML
LAPACK version 3.0
zpotf2(3)

PURPOSE
ZPOTF2 - compute the Cholesky factorization of a complex Hermitian positive
definite matrix A

SYNTAX
SUBROUTINE ZPOTF2( UPLO, N, A, LDA, INFO )

CHARACTER	     UPLO

INTEGER	     INFO, LDA, N

COMPLEX*16     A( LDA, * )

DESCRIPTION
ZPOTF2 computes the Cholesky factorization of a complex Hermitian positive
definite matrix A.  The factorization has the form
A = U' * U ,  if UPLO = 'U', or
A = L  * L',  if UPLO = 'L',
where U is an upper triangular matrix and L is lower triangular.

This is the unblocked version of the algorithm, calling Level 2 BLAS.

ARGUMENTS
UPLO	  (input) CHARACTER*1
Specifies whether the upper or lower triangular part of the
Hermitian matrix A is stored.	 = 'U':	 Upper triangular
= 'L':  Lower triangular

N	  (input) INTEGER
The order of the matrix A.  N >= 0.

A	  (input/output) COMPLEX*16 array, dimension (LDA,N)
On entry, the Hermitian matrix A.  If UPLO = 'U', the leading n by
n upper triangular part of A contains the upper triangular part of
the matrix A, and the strictly lower triangular part of A is not
referenced.  If UPLO = 'L', the leading n by n lower triangular
part of A contains the lower triangular part of the matrix A, and
the strictly upper triangular part of A is not referenced.

On exit, if INFO = 0, the factor U or L from the Cholesky
factorization A = U'*U  or A = L*L'.

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

INFO	  (output) INTEGER
= 0: successful exit
< 0: if INFO = -k, the k-th argument had an illegal value
> 0: if INFO = k, the leading minor of order k is not positive
definite, and the factorization could not be completed.
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