cla_hercond_c.f(3)

NAME
cla_hercond_c.f -

SYNOPSIS

  Functions/Subroutines
REAL function CLA_HERCOND_C (UPLO, N, A, LDA, AF, LDAF, IPIV, C, CAPPLY, INFO, WORK, RWORK)
CLA_HERCOND_C

Function/Subroutine Documentation

  REAL function CLA_HERCOND_C (CHARACTERUPLO, INTEGERN, COMPLEX, dimension( lda, * )A, INTEGERLDA, COMPLEX, dimension( ldaf, * )AF, INTEGERLDAF, INTEGER, dimension( * )IPIV, REAL, dimension ( * )C, LOGICALCAPPLY, INTEGERINFO, COMPLEX, dimension( * )WORK, REAL, dimension( * )RWORK)

CLA_HERCOND_C

Purpose:

        CLA_HERCOND_C computes the infinity norm condition number of
        op(A) * inv(diag(C)) where C is a REAL 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 CHETRF.

    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.

    C

              C is REAL array, dimension (N)
         The vector C in the formula op(A) * inv(diag(C)).

    CAPPLY

              CAPPLY is LOGICAL
         If .TRUE. then access the vector C in the formula above.

    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'.

Date:
    November 2011

Definition at line 138 of file cla_hercond_c.f'.

Author

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