numeric-linalg
Educational material on the SciPy implementation of numerical linear algebra algorithms
| Name | Size | Mode | |
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| lapack/TESTING/EIG/slafts.f | 5858B | -rw-r--r-- |
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*> \brief \b SLAFTS * * =========== DOCUMENTATION =========== * * Online html documentation available at * http://www.netlib.org/lapack/explore-html/ * * Definition: * =========== * * SUBROUTINE SLAFTS( TYPE, M, N, IMAT, NTESTS, RESULT, ISEED, * THRESH, IOUNIT, IE ) * * .. Scalar Arguments .. * CHARACTER*3 TYPE * INTEGER IE, IMAT, IOUNIT, M, N, NTESTS * REAL THRESH * .. * .. Array Arguments .. * INTEGER ISEED( 4 ) * REAL RESULT( * ) * .. * * *> \par Purpose: * ============= *> *> \verbatim *> *> SLAFTS tests the result vector against the threshold value to *> see which tests for this matrix type failed to pass the threshold. *> Output is to the file given by unit IOUNIT. *> \endverbatim * * Arguments: * ========== * *> \verbatim *> TYPE - CHARACTER*3 *> On entry, TYPE specifies the matrix type to be used in the *> printed messages. *> Not modified. *> *> N - INTEGER *> On entry, N specifies the order of the test matrix. *> Not modified. *> *> IMAT - INTEGER *> On entry, IMAT specifies the type of the test matrix. *> A listing of the different types is printed by SLAHD2 *> to the output file if a test fails to pass the threshold. *> Not modified. *> *> NTESTS - INTEGER *> On entry, NTESTS is the number of tests performed on the *> subroutines in the path given by TYPE. *> Not modified. *> *> RESULT - REAL array of dimension( NTESTS ) *> On entry, RESULT contains the test ratios from the tests *> performed in the calling program. *> Not modified. *> *> ISEED - INTEGER array of dimension( 4 ) *> Contains the random seed that generated the matrix used *> for the tests whose ratios are in RESULT. *> Not modified. *> *> THRESH - REAL *> On entry, THRESH specifies the acceptable threshold of the *> test ratios. If RESULT( K ) > THRESH, then the K-th test *> did not pass the threshold and a message will be printed. *> Not modified. *> *> IOUNIT - INTEGER *> On entry, IOUNIT specifies the unit number of the file *> to which the messages are printed. *> Not modified. *> *> IE - INTEGER *> On entry, IE contains the number of tests which have *> failed to pass the threshold so far. *> Updated on exit if any of the ratios in RESULT also fail. *> \endverbatim * * Authors: * ======== * *> \author Univ. of Tennessee *> \author Univ. of California Berkeley *> \author Univ. of Colorado Denver *> \author NAG Ltd. * *> \ingroup single_eig * * ===================================================================== SUBROUTINE SLAFTS( TYPE, M, N, IMAT, NTESTS, RESULT, ISEED, $ THRESH, IOUNIT, IE ) * * -- 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 .. CHARACTER*3 TYPE INTEGER IE, IMAT, IOUNIT, M, N, NTESTS REAL THRESH * .. * .. Array Arguments .. INTEGER ISEED( 4 ) REAL RESULT( * ) * .. * * ===================================================================== * * .. Local Scalars .. INTEGER K * .. * .. External Subroutines .. EXTERNAL SLAHD2 * .. * .. Executable Statements .. * IF( M.EQ.N ) THEN * * Output for square matrices: * DO 10 K = 1, NTESTS IF( RESULT( K ).GE.THRESH ) THEN * * If this is the first test to fail, call SLAHD2 * to print a header to the data file. * IF( IE.EQ.0 ) $ CALL SLAHD2( IOUNIT, TYPE ) IE = IE + 1 IF( RESULT( K ).LT.10000.0 ) THEN WRITE( IOUNIT, FMT = 9999 )N, IMAT, ISEED, K, $ RESULT( K ) 9999 FORMAT( ' Matrix order=', I5, ', type=', I2, $ ', seed=', 4( I4, ',' ), ' result ', I3, ' is', $ 0P, F8.2 ) ELSE WRITE( IOUNIT, FMT = 9998 )N, IMAT, ISEED, K, $ RESULT( K ) 9998 FORMAT( ' Matrix order=', I5, ', type=', I2, $ ', seed=', 4( I4, ',' ), ' result ', I3, ' is', $ 1P, E10.3 ) END IF END IF 10 CONTINUE ELSE * * Output for rectangular matrices * DO 20 K = 1, NTESTS IF( RESULT( K ).GE.THRESH ) THEN * * If this is the first test to fail, call SLAHD2 * to print a header to the data file. * IF( IE.EQ.0 ) $ CALL SLAHD2( IOUNIT, TYPE ) IE = IE + 1 IF( RESULT( K ).LT.10000.0 ) THEN WRITE( IOUNIT, FMT = 9997 )M, N, IMAT, ISEED, K, $ RESULT( K ) 9997 FORMAT( 1X, I5, ' x', I5, ' matrix, type=', I2, ', s', $ 'eed=', 3( I4, ',' ), I4, ': result ', I3, $ ' is', 0P, F8.2 ) ELSE WRITE( IOUNIT, FMT = 9996 )M, N, IMAT, ISEED, K, $ RESULT( K ) 9996 FORMAT( 1X, I5, ' x', I5, ' matrix, type=', I2, ', s', $ 'eed=', 3( I4, ',' ), I4, ': result ', I3, $ ' is', 1P, E10.3 ) END IF END IF 20 CONTINUE * END IF RETURN * * End of SLAFTS * END