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

NAME
       SRC/zla_gercond_x.f

SYNOPSIS
   Functions/Subroutines
       double precision function zla_gercond_x (trans, n, a, lda, af, ldaf,
           ipiv, x, info, work, rwork)
           ZLA_GERCOND_X computes the infinity norm condition number of
           op(A)*diag(x) for general matrices.

Function/Subroutine Documentation
   double precision function zla_gercond_x (character trans, integer n,
       complex*16, dimension( lda, * ) a, integer lda, complex*16, dimension(
       ldaf, * ) af, integer ldaf, integer, dimension( * ) ipiv, complex*16,
       dimension( * ) x, integer info, complex*16, dimension( * ) work, double
       precision, dimension( * ) rwork)
       ZLA_GERCOND_X computes the infinity norm condition number of
       op(A)*diag(x) for general matrices.

       Purpose:


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

       Parameters
           TRANS

                     TRANS is CHARACTER*1
                Specifies the form of the system of equations:
                  = 'N':  A * X = B     (No transpose)
                  = 'T':  A**T * X = B  (Transpose)
                  = 'C':  A**H * X = B  (Conjugate Transpose = Transpose)

           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 factors L and U from the factorization
                A = P*L*U as computed by ZGETRF.

           LDAF

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

           IPIV

                     IPIV is INTEGER array, dimension (N)
                The pivot indices from the factorization A = P*L*U
                as computed by ZGETRF; row i of the matrix was interchanged
                with row IPIV(i).

           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 133 of file zla_gercond_x.f.

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

LAPACK                          Version 3.12.0          SRC/zla_gercond_x.f(3)