TESTING/LIN/cspt03.f(3)

NAME
TESTING/LIN/cspt03.f

SYNOPSIS

  Functions/Subroutines
subroutine cspt03 (uplo, n, a, ainv, work, ldw, rwork, rcond, resid)
CSPT03

Function/Subroutine Documentation

  subroutine cspt03 (character uplo, integer n, complex, dimension( * ) a, complex, dimension( * ) ainv, complex, dimension( ldw, * ) work, integer ldw, real, dimension( * ) rwork, real rcond, real resid)

CSPT03

Purpose:

     CSPT03 computes the residual for a complex symmetric packed matrix
     times its inverse:
        norm( I - A*AINV ) / ( N * norm(A) * norm(AINV) * EPS ),
     where EPS is the machine epsilon.

Parameters
    UPLO

              UPLO is CHARACTER*1
              Specifies whether the upper or lower triangular part of the
              complex symmetric matrix A is stored:
              = 'U':  Upper triangular
              = 'L':  Lower triangular

    N

              N is INTEGER
              The number of rows and columns of the matrix A.  N >= 0.

    A

              A is COMPLEX array, dimension (N*(N+1)/2)
              The original complex symmetric matrix A, stored as a packed
              triangular matrix.

    AINV

              AINV is COMPLEX array, dimension (N*(N+1)/2)
              The (symmetric) inverse of the matrix A, stored as a packed
              triangular matrix.

    WORK

              WORK is COMPLEX array, dimension (LDW,N)

    LDW

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

    RWORK

              RWORK is REAL array, dimension (N)

    RCOND

              RCOND is REAL
              The reciprocal of the condition number of A, computed as
              ( 1/norm(A) ) / norm(AINV).

    RESID

              RESID is REAL
              norm(I - A*AINV) / ( N * norm(A) * norm(AINV) * EPS )

Author
    Univ. of Tennessee

    Univ. of California Berkeley

    Univ. of Colorado Denver

    NAG Ltd.

Definition at line 108 of file cspt03.f.

Author

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