PLASMA  2.8.0
PLASMA - Parallel Linear Algebra for Scalable Multi-core Architectures
int PLASMA_dpocon ( PLASMA_enum  uplo,
int  N,
double *  A,
int  LDA,
double  Anorm,
double *  rcond 
)

PLASMA_dpocon - estimates the reciprocal of the condition number (in the 1-norm) of a complex Hermitian positive definite matrix using the Cholesky factorization A = U**T*U or A = L*L**T computed by PLASMA_dpotrf().

An estimate is obtained for norm(inv(A)), and the reciprocal of the condition number is computed as

\[ rcond = \frac{1}{\|\|A\-\| \times \-\|A^{-1}\|\|} \]

Parameters
[in]uplo= PlasmaUpper: Upper triangle of A is stored; = PlasmaLower: Lower triangle of A is stored.
[in]NThe order of the matrix A. N >= 0.
[in]AThe N-by-N matrix A.
[in]LDAThe leading dimension of the array A. LDA >= max(1,N).
[in]AnormIf norm = PlasmaOneNorm, the 1-norm of the original matrix A. If norm = PlasmaInfNorm, the infinity-norm of the original matrix A.
[out]rcondThe reciprocal of the condition number of the matrix A, computed as stated above.
Returns
Return values
PLASMA_SUCCESSsuccessful exit
<0if -i, the i-th argument had an illegal value
See also
PLASMA_dpocon_Tile
PLASMA_dpocon_Tile_Async
PLASMA_cpocon
PLASMA_dpocon
PLASMA_spocon