TESTING/EIG/schkec.f(3)

NAME
TESTING/EIG/schkec.f

SYNOPSIS

  Functions/Subroutines
subroutine schkec (thresh, tsterr, nin, nout)
SCHKEC

Function/Subroutine Documentation

  subroutine schkec (real thresh, logical tsterr, integer nin, integer nout)

SCHKEC

Purpose:

    !>
    !> SCHKEC tests eigen- condition estimation routines
    !>        SLALN2, SLASY2, SLANV2, SLAQTR, SLAEXC,
    !>        STRSYL, STREXC, STRSNA, STRSEN, STGEXC
    !>
    !> In all cases, the routine runs through a fixed set of numerical
    !> examples, subjects them to various tests, and compares the test
    !> results to a threshold THRESH. In addition, STREXC, STRSNA and STRSEN
    !> are tested by reading in precomputed examples from a file (on input
    !> unit NIN).  Output is written to output unit NOUT.
    !>

Parameters
    THRESH

    !>          THRESH is REAL
    !>          Threshold for residual tests.  A computed test ratio passes
    !>          the threshold if it is less than THRESH.
    !>

    TSTERR

    !>          TSTERR is LOGICAL
    !>          Flag that indicates whether error exits are to be tested.
    !>

    NIN

    !>          NIN is INTEGER
    !>          The logical unit number for input.
    !>

    NOUT

    !>          NOUT is INTEGER
    !>          The logical unit number for output.
    !>

Author
    Univ. of Tennessee

    Univ. of California Berkeley

    Univ. of Colorado Denver

    NAG Ltd.

Definition at line 75 of file schkec.f.

Author

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