dchkec.f3

!>
!> DCHKEC tests eigen- condition estimation routines
!>        DLALN2, DLASY2, DLANV2, DLAQTR, DLAEXC,
!>        DTRSYL, DTREXC, DTRSNA, DTRSEN, DTGEXC
!>
!> 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, DTREXC, DTRSNA and DTRSEN
!> are tested by reading in precomputed examples from a file (on input
!> unit NIN).  Output is written to output unit NOUT.
!> 

THRESH

!>          THRESH is DOUBLE PRECISION
!>          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.
!> 

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