NAME

TESTING/EIG/cchkec.f

SYNOPSIS

Functions/Subroutines

subroutine cchkec (thresh, tsterr, nin, nout)
CCHKEC

Function/Subroutine Documentation

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

CCHKEC

Purpose:



 CCHKEC tests eigen- condition estimation routines


        CTRSYL, CTRSYL3, CTREXC, CTRSNA, CTRSEN


 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, CTRSNA and CTRSEN 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 74 of file cchkec.f.

Author

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