CLA_PORCOND_X
Purpose
CLA_PORCOND_X Computes the infinity norm condition number of
op(A) * diag(X) where X is a COMPLEX vector.
op(A) * diag(X) where X is a COMPLEX vector.
Arguments
| UPLO |
(input) CHARACTER*1
= 'U': Upper triangle of A is stored;
= 'L': Lower triangle of A is stored. |
| N |
(input) INTEGER
The number of linear equations, i.e., the order of the
matrix A. N >= 0. |
| A |
(input) COMPLEX array, dimension (LDA,N)
On entry, the N-by-N matrix A.
|
| LDA |
(input) INTEGER
The leading dimension of the array A. LDA >= max(1,N).
|
| AF |
(input) COMPLEX array, dimension (LDAF,N)
The triangular factor U or L from the Cholesky factorization
|
| A |
= U**T*U or A = L*L**T, as computed by CPOTRF.
|
| LDAF |
(input) INTEGER
The leading dimension of the array AF. LDAF >= max(1,N).
|
| X |
(input) COMPLEX array, dimension (N)
The vector X in the formula op(A) * diag(X).
|
| INFO |
(output) INTEGER
= 0: Successful exit.
i > 0: The ith argument is invalid. |
| WORK |
(input) COMPLEX array, dimension (2*N).
Workspace.
|
| RWORK |
(input) REAL array, dimension (N).
Workspace.
|