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LAPACK
3.7.0
LAPACK: Linear Algebra PACKage
|
| subroutine dchkec | ( | double precision | THRESH, |
| logical | TSTERR, | ||
| integer | NIN, | ||
| integer | NOUT | ||
| ) |
DCHKEC
DCHKEC tests eigen- condition estimation routines
DLALN2, DLASY2, DLANV2, DLAQTR, DLAEXC,
DTRSYL, DTREXC, DTRSNA, DTRSEN
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. | [in] | THRESH | THRESH is DOUBLE PRECISION
Threshold for residual tests. A computed test ratio passes
the threshold if it is less than THRESH. |
| [in] | TSTERR | TSTERR is LOGICAL
Flag that indicates whether error exits are to be tested. |
| [in] | NIN | NIN is INTEGER
The logical unit number for input. |
| [in] | NOUT | NOUT is INTEGER
The logical unit number for output. |