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LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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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, 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.
[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. |