TESTING/LIN/dppt03.f(3)    Library Functions Manual    TESTING/LIN/dppt03.f(3)

NAME
       TESTING/LIN/dppt03.f

SYNOPSIS
   Functions/Subroutines
       subroutine dppt03 (uplo, n, a, ainv, work, ldwork, rwork, rcond, resid)
           DPPT03

Function/Subroutine Documentation
   subroutine dppt03 (character uplo, integer n, double precision, dimension(
       * ) a, double precision, dimension( * ) ainv, double precision,
       dimension( ldwork, * ) work, integer ldwork, double precision,
       dimension( * ) rwork, double precision rcond, double precision resid)
       DPPT03

       Purpose:


           !>
           !> DPPT03 computes the residual for a 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
           !>          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 DOUBLE PRECISION array, dimension (N*(N+1)/2)
           !>          The original symmetric matrix A, stored as a packed
           !>          triangular matrix.
           !>

           AINV

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

           WORK

           !>          WORK is DOUBLE PRECISION array, dimension (LDWORK,N)
           !>

           LDWORK

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

           RWORK

           !>          RWORK is DOUBLE PRECISION array, dimension (N)
           !>

           RCOND

           !>          RCOND is DOUBLE PRECISION
           !>          The reciprocal of the condition number of A, computed as
           !>          ( 1/norm(A) ) / norm(AINV).
           !>

           RESID

           !>          RESID is DOUBLE PRECISION
           !>          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 dppt03.f.

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

LAPACK                          Version 3.12.0         TESTING/LIN/dppt03.f(3)