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

NAME
       SRC/cla_syrcond_x.f

SYNOPSIS
   Functions/Subroutines
       real function cla_syrcond_x (uplo, n, a, lda, af, ldaf, ipiv, x, info,
           work, rwork)
           CLA_SYRCOND_X computes the infinity norm condition number of
           op(A)*diag(x) for symmetric indefinite matrices.

Function/Subroutine Documentation
   real function cla_syrcond_x (character uplo, integer n, complex, dimension(
       lda, * ) a, integer lda, complex, dimension( ldaf, * ) af, integer
       ldaf, integer, dimension( * ) ipiv, complex, dimension( * ) x, integer
       info, complex, dimension( * ) work, real, dimension( * ) rwork)
       CLA_SYRCOND_X computes the infinity norm condition number of
       op(A)*diag(x) for symmetric indefinite matrices.

       Purpose:


               CLA_SYRCOND_X Computes the infinity norm condition number of
               op(A) * diag(X) where X is a COMPLEX 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 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 block diagonal matrix D and the multipliers used to
                obtain the factor U or L as computed by CSYTRF.

           LDAF

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

           IPIV

                     IPIV is INTEGER array, dimension (N)
                Details of the interchanges and the block structure of D
                as determined by CSYTRF.

           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.

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

       Definition at line 129 of file cla_syrcond_x.f.

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

LAPACK                          Version 3.12.0          SRC/cla_syrcond_x.f(3)