TESTING/EIG/dget40.f(3)

NAME
TESTING/EIG/dget40.f

SYNOPSIS

  Functions/Subroutines
subroutine dget40 (rmax, lmax, ninfo, knt, nin)
DGET40

Function/Subroutine Documentation

  subroutine dget40 (double precision rmax, integer lmax, integer, dimension( 2 ) ninfo, integer knt, integer nin)

DGET40

Purpose:

    !>
    !> DGET40 tests DTGEXC, a routine for swapping adjacent blocks (either
    !> 1 by 1 or 2 by 2) on the diagonal of a pencil in real generalized Schur form.
    !> Thus, DTGEXC computes an orthogonal matrices Q and Z such that
    !>
    !>     Q' * ( [ A B ], [ D E ] ) * Z  = ( [ C1 B1 ], [ F1 E1 ] )
    !>          ( [ 0 C ]  [   F ] )        ( [ 0  A1 ]  [    D1]  )
    !>
    !> where (C1,F1) is similar to (C,F) and (A1,D1) is similar to (A,D).
    !> Both (A,D) and (C,F) are assumed to be in standard form
    !> and (A1,D1) and (C1,F1) are returned with the
    !> same properties.
    !>

Parameters
    RMAX

    !>          RMAX is DOUBLE PRECISION
    !>          Value of the largest test ratio.
    !>

    LMAX

    !>          LMAX is INTEGER
    !>          Example number where largest test ratio achieved.
    !>

    NINFO

    !>          NINFO is INTEGER array, dimension (2)
    !>          NINFO( 1 ) = DTGEXC without accumulation returned INFO nonzero
    !>          NINFO( 2 ) = DTGEXC with accumulation returned INFO nonzero
    !>

    KNT

    !>          KNT is INTEGER
    !>          Total number of examples tested.
    !>

    NIN

    !>          NIN is INTEGER
    !>          Input logical unit number.
    !>

Author
    Univ. of Tennessee

    Univ. of California Berkeley

    Univ. of Colorado Denver

    NAG Ltd.

Definition at line 84 of file dget40.f.

Author

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