197 lines
6.2 KiB
Fortran
197 lines
6.2 KiB
Fortran
*> \brief \b CCHKEC
|
|
*
|
|
* =========== DOCUMENTATION ===========
|
|
*
|
|
* Online html documentation available at
|
|
* http://www.netlib.org/lapack/explore-html/
|
|
*
|
|
* Definition:
|
|
* ===========
|
|
*
|
|
* SUBROUTINE CCHKEC( THRESH, TSTERR, NIN, NOUT )
|
|
*
|
|
* .. Scalar Arguments ..
|
|
* LOGICAL TSTERR
|
|
* INTEGER NIN, NOUT
|
|
* REAL THRESH
|
|
* ..
|
|
*
|
|
*
|
|
*> \par Purpose:
|
|
* =============
|
|
*>
|
|
*> \verbatim
|
|
*>
|
|
*> 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.
|
|
*> \endverbatim
|
|
*
|
|
* Arguments:
|
|
* ==========
|
|
*
|
|
*> \param[in] THRESH
|
|
*> \verbatim
|
|
*> THRESH is REAL
|
|
*> Threshold for residual tests. A computed test ratio passes
|
|
*> the threshold if it is less than THRESH.
|
|
*> \endverbatim
|
|
*>
|
|
*> \param[in] TSTERR
|
|
*> \verbatim
|
|
*> TSTERR is LOGICAL
|
|
*> Flag that indicates whether error exits are to be tested.
|
|
*> \endverbatim
|
|
*>
|
|
*> \param[in] NIN
|
|
*> \verbatim
|
|
*> NIN is INTEGER
|
|
*> The logical unit number for input.
|
|
*> \endverbatim
|
|
*>
|
|
*> \param[in] NOUT
|
|
*> \verbatim
|
|
*> NOUT is INTEGER
|
|
*> The logical unit number for output.
|
|
*> \endverbatim
|
|
*
|
|
* Authors:
|
|
* ========
|
|
*
|
|
*> \author Univ. of Tennessee
|
|
*> \author Univ. of California Berkeley
|
|
*> \author Univ. of Colorado Denver
|
|
*> \author NAG Ltd.
|
|
*
|
|
*> \ingroup complex_eig
|
|
*
|
|
* =====================================================================
|
|
SUBROUTINE CCHKEC( THRESH, TSTERR, NIN, NOUT )
|
|
*
|
|
* -- LAPACK test routine --
|
|
* -- LAPACK is a software package provided by Univ. of Tennessee, --
|
|
* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
|
|
*
|
|
* .. Scalar Arguments ..
|
|
LOGICAL TSTERR
|
|
INTEGER NIN, NOUT
|
|
REAL THRESH
|
|
* ..
|
|
*
|
|
* =====================================================================
|
|
*
|
|
* .. Local Scalars ..
|
|
LOGICAL OK
|
|
CHARACTER*3 PATH
|
|
INTEGER KTREXC, KTRSEN, KTRSNA, KTRSYL, KTRSYL3,
|
|
$ LTREXC, LTRSYL, NTESTS, NTREXC, NTRSYL
|
|
REAL EPS, RTREXC, SFMIN
|
|
* ..
|
|
* .. Local Arrays ..
|
|
INTEGER FTRSYL( 3 ), ITRSYL( 2 ), LTRSEN( 3 ),
|
|
$ LTRSNA( 3 ), NTRSEN( 3 ), NTRSNA( 3 )
|
|
REAL RTRSEN( 3 ), RTRSNA( 3 ), RTRSYL( 2 )
|
|
* ..
|
|
* .. External Subroutines ..
|
|
EXTERNAL CERREC, CGET35, CGET36, CGET37, CGET38, CSYL01
|
|
* ..
|
|
* .. External Functions ..
|
|
REAL SLAMCH
|
|
EXTERNAL SLAMCH
|
|
* ..
|
|
* .. Executable Statements ..
|
|
*
|
|
PATH( 1: 1 ) = 'Complex precision'
|
|
PATH( 2: 3 ) = 'EC'
|
|
EPS = SLAMCH( 'P' )
|
|
SFMIN = SLAMCH( 'S' )
|
|
WRITE( NOUT, FMT = 9994 )
|
|
WRITE( NOUT, FMT = 9993 )EPS, SFMIN
|
|
WRITE( NOUT, FMT = 9992 )THRESH
|
|
*
|
|
* Test error exits if TSTERR is .TRUE.
|
|
*
|
|
IF( TSTERR )
|
|
$ CALL CERREC( PATH, NOUT )
|
|
*
|
|
OK = .TRUE.
|
|
CALL CGET35( RTRSYL( 1 ), LTRSYL, NTRSYL, KTRSYL, NIN )
|
|
IF( RTRSYL( 1 ).GT.THRESH ) THEN
|
|
OK = .FALSE.
|
|
WRITE( NOUT, FMT = 9999 )RTRSYL( 1 ), LTRSYL, NTRSYL, KTRSYL
|
|
END IF
|
|
*
|
|
CALL CSYL01( THRESH, FTRSYL, RTRSYL, ITRSYL, KTRSYL3 )
|
|
IF( FTRSYL( 1 ).GT.0 ) THEN
|
|
OK = .FALSE.
|
|
WRITE( NOUT, FMT = 9970 )FTRSYL( 1 ), RTRSYL( 1 ), THRESH
|
|
END IF
|
|
IF( FTRSYL( 2 ).GT.0 ) THEN
|
|
OK = .FALSE.
|
|
WRITE( NOUT, FMT = 9971 )FTRSYL( 2 ), RTRSYL( 2 ), THRESH
|
|
END IF
|
|
IF( FTRSYL( 3 ).GT.0 ) THEN
|
|
OK = .FALSE.
|
|
WRITE( NOUT, FMT = 9972 )FTRSYL( 3 )
|
|
END IF
|
|
*
|
|
CALL CGET36( RTREXC, LTREXC, NTREXC, KTREXC, NIN )
|
|
IF( RTREXC.GT.THRESH .OR. NTREXC.GT.0 ) THEN
|
|
OK = .FALSE.
|
|
WRITE( NOUT, FMT = 9998 )RTREXC, LTREXC, NTREXC, KTREXC
|
|
END IF
|
|
*
|
|
CALL CGET37( RTRSNA, LTRSNA, NTRSNA, KTRSNA, NIN )
|
|
IF( RTRSNA( 1 ).GT.THRESH .OR. RTRSNA( 2 ).GT.THRESH .OR.
|
|
$ NTRSNA( 1 ).NE.0 .OR. NTRSNA( 2 ).NE.0 .OR. NTRSNA( 3 ).NE.0 )
|
|
$ THEN
|
|
OK = .FALSE.
|
|
WRITE( NOUT, FMT = 9997 )RTRSNA, LTRSNA, NTRSNA, KTRSNA
|
|
END IF
|
|
*
|
|
CALL CGET38( RTRSEN, LTRSEN, NTRSEN, KTRSEN, NIN )
|
|
IF( RTRSEN( 1 ).GT.THRESH .OR. RTRSEN( 2 ).GT.THRESH .OR.
|
|
$ NTRSEN( 1 ).NE.0 .OR. NTRSEN( 2 ).NE.0 .OR. NTRSEN( 3 ).NE.0 )
|
|
$ THEN
|
|
OK = .FALSE.
|
|
WRITE( NOUT, FMT = 9996 )RTRSEN, LTRSEN, NTRSEN, KTRSEN
|
|
END IF
|
|
*
|
|
NTESTS = KTRSYL + KTREXC + KTRSNA + KTRSEN
|
|
IF( OK )
|
|
$ WRITE( NOUT, FMT = 9995 )PATH, NTESTS
|
|
*
|
|
9999 FORMAT( ' Error in CTRSYL: RMAX =', E12.3, / ' LMAX = ', I8,
|
|
$ ' NINFO=', I8, ' KNT=', I8 )
|
|
9998 FORMAT( ' Error in CTREXC: RMAX =', E12.3, / ' LMAX = ', I8,
|
|
$ ' NINFO=', I8, ' KNT=', I8 )
|
|
9997 FORMAT( ' Error in CTRSNA: RMAX =', 3E12.3, / ' LMAX = ',
|
|
$ 3I8, ' NINFO=', 3I8, ' KNT=', I8 )
|
|
9996 FORMAT( ' Error in CTRSEN: RMAX =', 3E12.3, / ' LMAX = ',
|
|
$ 3I8, ' NINFO=', 3I8, ' KNT=', I8 )
|
|
9995 FORMAT( / 1X, 'All tests for ', A3,
|
|
$ ' routines passed the threshold ( ', I6, ' tests run)' )
|
|
9994 FORMAT( ' Tests of the Nonsymmetric eigenproblem condition',
|
|
$ ' estimation routines', / ' CTRSYL, CTREXC, CTRSNA, CTRSEN',
|
|
$ / )
|
|
9993 FORMAT( ' Relative machine precision (EPS) = ', E16.6,
|
|
$ / ' Safe minimum (SFMIN) = ', E16.6, / )
|
|
9992 FORMAT( ' Routines pass computational tests if test ratio is ',
|
|
$ 'less than', F8.2, / / )
|
|
9972 FORMAT( 'CTRSYL and CTRSYL3 compute an inconsistent scale ',
|
|
$ 'factor in ', I8, ' tests.')
|
|
9971 FORMAT( 'Error in CTRSYL3: ', I8, ' tests fail the threshold.', /
|
|
$ 'Maximum test ratio =', D12.3, ' threshold =', D12.3 )
|
|
9970 FORMAT( 'Error in CTRSYL: ', I8, ' tests fail the threshold.', /
|
|
$ 'Maximum test ratio =', D12.3, ' threshold =', D12.3 )
|
|
RETURN
|
|
*
|
|
* End of CCHKEC
|
|
*
|
|
END
|