CLA_PORCOND_X Computes the infinity norm condition number of


    op(A) * diag(X) where X is a COMPLEX vector.

UPLO

          UPLO is CHARACTER*1


       = 'U':  Upper triangle of A is stored;


       = 'L':  Lower triangle of A is stored.

N

          N is INTEGER


     The number of linear equations, i.e., the order of the


     matrix A.  N >= 0.

A

          A is COMPLEX array, dimension (LDA,N)


     On entry, the N-by-N matrix A.

LDA

          LDA is INTEGER


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

AF

          AF is COMPLEX array, dimension (LDAF,N)


     The triangular factor U or L from the Cholesky factorization


     A = U**H*U or A = L*L**H, as computed by CPOTRF.

LDAF

          LDAF is INTEGER


     The leading dimension of the array AF.  LDAF >= max(1,N).

X

          X is COMPLEX array, dimension (N)


     The vector X in the formula op(A) * diag(X).

INFO

          INFO is INTEGER


       = 0:  Successful exit.


     i > 0:  The ith argument is invalid.

WORK

          WORK is COMPLEX array, dimension (2*N).


     Workspace.

RWORK

          RWORK is REAL array, dimension (N).


     Workspace.

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

September 2012