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

NAME
       SRC/zla_hercond_x.f

SYNOPSIS
   Functions/Subroutines
       double precision function zla_hercond_x (uplo, n, a, lda, af, ldaf,
           ipiv, x, info, work, rwork)
           ZLA_HERCOND_X computes the infinity norm condition number of
           op(A)*diag(x) for Hermitian indefinite matrices.

Function/Subroutine Documentation
   double precision function zla_hercond_x (character uplo, 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_HERCOND_X computes the infinity norm condition number of
       op(A)*diag(x) for Hermitian indefinite matrices.

       Purpose:


           !>
           !>    ZLA_HERCOND_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 block diagonal matrix D and the multipliers used to
           !>     obtain the factor U or L as computed by ZHETRF.
           !>

           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 CHETRF.
           !>

           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 130 of file zla_hercond_x.f.

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

LAPACK                          Version 3.12.0          SRC/zla_hercond_x.f(3)