SRC/zla_porcond_x.f(3)     Library Functions Manual     SRC/zla_porcond_x.f(3)

NAME
       SRC/zla_porcond_x.f

SYNOPSIS
   Functions/Subroutines
       double precision function zla_porcond_x (uplo, n, a, lda, af, ldaf, x,
           info, work, rwork)
           ZLA_PORCOND_X computes the infinity norm condition number of
           op(A)*diag(x) for Hermitian positive-definite matrices.

Function/Subroutine Documentation
   double precision function zla_porcond_x (character uplo, integer n,
       complex*16, dimension( lda, * ) a, integer lda, complex*16, dimension(
       ldaf, * ) af, integer ldaf, complex*16, dimension( * ) x, integer info,
       complex*16, dimension( * ) work, double precision, dimension( * )
       rwork)
       ZLA_PORCOND_X computes the infinity norm condition number of
       op(A)*diag(x) for Hermitian positive-definite matrices.

       Purpose:


               ZLA_PORCOND_X Computes the infinity norm condition number of
               op(A) * diag(X) where X is a COMPLEX*16 vector.

       Parameters
           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*16 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*16 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 ZPOTRF.

           LDAF

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

           X

                     X is COMPLEX*16 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*16 array, dimension (2*N).
                Workspace.

           RWORK

                     RWORK is DOUBLE PRECISION array, dimension (N).
                Workspace.

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

       Definition at line 122 of file zla_porcond_x.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

LAPACK                          Version 3.12.0          SRC/zla_porcond_x.f(3)