numeric-linalg
Educational material on the SciPy implementation of numerical linear algebra algorithms
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| lapack/TESTING/EIG/alarqg.f | 6143B | -rw-r--r-- |
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*> \brief \b ALARQG * * =========== DOCUMENTATION =========== * * Online html documentation available at * http://www.netlib.org/lapack/explore-html/ * * Definition: * =========== * * SUBROUTINE ALARQG( PATH, NMATS, DOTYPE, NTYPES, NIN, NOUT ) * * .. Scalar Arguments .. * CHARACTER*3 PATH * INTEGER NIN, NMATS, NOUT, NTYPES * .. * .. Array Arguments .. * LOGICAL DOTYPE( * ) * .. * * *> \par Purpose: * ============= *> *> \verbatim *> *> ALARQG handles input for the LAPACK test program. It is called *> to evaluate the input line which requested NMATS matrix types for *> PATH. The flow of control is as follows: *> *> IF NMATS = NTYPES THEN *> DOTYPE(1:NTYPES) = .TRUE. *> ELSE *> Read the next input line for NMATS matrix types *> Set DOTYPE(I) = .TRUE. for each valid type I *> END IF *> \endverbatim * * Arguments: * ========== * *> \param[in] PATH *> \verbatim *> PATH is CHARACTER*3 *> An LAPACK path name for testing. *> \endverbatim *> *> \param[in] NMATS *> \verbatim *> NMATS is INTEGER *> The number of matrix types to be used in testing this path. *> \endverbatim *> *> \param[out] DOTYPE *> \verbatim *> DOTYPE is LOGICAL array, dimension (NTYPES) *> The vector of flags indicating if each type will be tested. *> \endverbatim *> *> \param[in] NTYPES *> \verbatim *> NTYPES is INTEGER *> The maximum number of matrix types for this path. *> \endverbatim *> *> \param[in] NIN *> \verbatim *> NIN is INTEGER *> The unit number for input. NIN >= 1. *> \endverbatim *> *> \param[in] NOUT *> \verbatim *> NOUT is INTEGER *> The unit number for output. NOUT >= 1. *> \endverbatim * * Authors: * ======== * *> \author Univ. of Tennessee *> \author Univ. of California Berkeley *> \author Univ. of Colorado Denver *> \author NAG Ltd. * *> \ingroup aux_eig * * ===================================================================== SUBROUTINE ALARQG( PATH, NMATS, DOTYPE, NTYPES, 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 .. CHARACTER*3 PATH INTEGER NIN, NMATS, NOUT, NTYPES * .. * .. Array Arguments .. LOGICAL DOTYPE( * ) * .. * * ====================================================================== * * .. Local Scalars .. LOGICAL FIRSTT CHARACTER C1 CHARACTER*10 INTSTR CHARACTER*80 LINE INTEGER I, I1, IC, J, K, LENP, NT * .. * .. Local Arrays .. INTEGER NREQ( 100 ) * .. * .. Intrinsic Functions .. INTRINSIC LEN * .. * .. Data statements .. DATA INTSTR / '0123456789' / * .. * .. Executable Statements .. * IF( NMATS.GE.NTYPES ) THEN * * Test everything if NMATS >= NTYPES. * DO 10 I = 1, NTYPES DOTYPE( I ) = .TRUE. 10 CONTINUE ELSE DO 20 I = 1, NTYPES DOTYPE( I ) = .FALSE. 20 CONTINUE FIRSTT = .TRUE. * * Read a line of matrix types if 0 < NMATS < NTYPES. * IF( NMATS.GT.0 ) THEN READ( NIN, FMT = '(A80)', END = 90 )LINE LENP = LEN( LINE ) I = 0 DO 60 J = 1, NMATS NREQ( J ) = 0 I1 = 0 30 CONTINUE I = I + 1 IF( I.GT.LENP ) THEN IF( J.EQ.NMATS .AND. I1.GT.0 ) THEN GO TO 60 ELSE WRITE( NOUT, FMT = 9995 )LINE WRITE( NOUT, FMT = 9994 )NMATS GO TO 80 END IF END IF IF( LINE( I: I ).NE.' ' .AND. LINE( I: I ).NE.',' ) THEN I1 = I C1 = LINE( I1: I1 ) * * Check that a valid integer was read * DO 40 K = 1, 10 IF( C1.EQ.INTSTR( K: K ) ) THEN IC = K - 1 GO TO 50 END IF 40 CONTINUE WRITE( NOUT, FMT = 9996 )I, LINE WRITE( NOUT, FMT = 9994 )NMATS GO TO 80 50 CONTINUE NREQ( J ) = 10*NREQ( J ) + IC GO TO 30 ELSE IF( I1.GT.0 ) THEN GO TO 60 ELSE GO TO 30 END IF 60 CONTINUE END IF DO 70 I = 1, NMATS NT = NREQ( I ) IF( NT.GT.0 .AND. NT.LE.NTYPES ) THEN IF( DOTYPE( NT ) ) THEN IF( FIRSTT ) $ WRITE( NOUT, FMT = * ) FIRSTT = .FALSE. WRITE( NOUT, FMT = 9997 )NT, PATH END IF DOTYPE( NT ) = .TRUE. ELSE WRITE( NOUT, FMT = 9999 )PATH, NT, NTYPES 9999 FORMAT( ' *** Invalid type request for ', A3, ', type ', $ I4, ': must satisfy 1 <= type <= ', I2 ) END IF 70 CONTINUE 80 CONTINUE END IF RETURN * 90 CONTINUE WRITE( NOUT, FMT = 9998 )PATH 9998 FORMAT( /' *** End of file reached when trying to read matrix ', $ 'types for ', A3, /' *** Check that you are requesting the', $ ' right number of types for each path', / ) 9997 FORMAT( ' *** Warning: duplicate request of matrix type ', I2, $ ' for ', A3 ) 9996 FORMAT( //' *** Invalid integer value in column ', I2, $ ' of input', ' line:', /A79 ) 9995 FORMAT( //' *** Not enough matrix types on input line', /A79 ) 9994 FORMAT( ' ==> Specify ', I4, ' matrix types on this line or ', $ 'adjust NTYPES on previous line' ) WRITE( NOUT, FMT = * ) STOP * * End of ALARQG * END