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* TG01CD EXAMPLE PROGRAM TEXT
* Copyright (c) 2002-2010 NICONET e.V.
*
* .. Parameters ..
INTEGER NIN, NOUT
PARAMETER ( NIN = 5, NOUT = 6 )
INTEGER LMAX, NMAX, MMAX
PARAMETER ( LMAX = 20, NMAX = 20, MMAX = 20)
INTEGER LDA, LDB, LDE, LDQ
PARAMETER ( LDA = LMAX, LDB = LMAX,
$ LDE = LMAX, LDQ = LMAX )
INTEGER LDWORK
PARAMETER ( LDWORK = MIN(LMAX,NMAX)+MAX(LMAX,NMAX,MMAX) )
* .. Local Scalars ..
CHARACTER*1 COMPQ
INTEGER I, INFO, J, L, M, N
* .. Local Arrays ..
DOUBLE PRECISION A(LDA,NMAX), B(LDB,MMAX),
$ DWORK(LDWORK), E(LDE,NMAX), Q(LDQ,LMAX)
* .. External Subroutines ..
EXTERNAL TG01CD
* .. Intrinsic Functions ..
INTRINSIC MAX, MIN
* .. Executable Statements ..
*
WRITE ( NOUT, FMT = 99999 )
* Skip the heading in the data file and read the data.
READ ( NIN, FMT = '()' )
READ ( NIN, FMT = * ) L, N, M
COMPQ = 'I'
IF ( L.LT.0 .OR. L.GT.LMAX ) THEN
WRITE ( NOUT, FMT = 99992 ) L
ELSE
IF ( N.LT.0 .OR. N.GT.NMAX ) THEN
WRITE ( NOUT, FMT = 99991 ) N
ELSE
READ ( NIN, FMT = * ) ( ( A(I,J), J = 1,N ), I = 1,L )
READ ( NIN, FMT = * ) ( ( E(I,J), J = 1,N ), I = 1,L )
IF ( M.LT.0 .OR. M.GT.MMAX ) THEN
WRITE ( NOUT, FMT = 99990 ) M
ELSE
READ ( NIN, FMT = * ) ( ( B(I,J), J = 1,M ), I = 1,L )
* Find the transformed descriptor system pair
* (A-lambda E,B).
CALL TG01CD( COMPQ, L, N, M, A, LDA, E, LDE, B, LDB,
$ Q, LDQ, DWORK, LDWORK, INFO )
*
IF ( INFO.NE.0 ) THEN
WRITE ( NOUT, FMT = 99998 ) INFO
ELSE
WRITE ( NOUT, FMT = 99997 )
DO 10 I = 1, L
WRITE ( NOUT, FMT = 99995 ) ( A(I,J), J = 1,N )
10 CONTINUE
WRITE ( NOUT, FMT = 99996 )
DO 20 I = 1, L
WRITE ( NOUT, FMT = 99995 ) ( E(I,J), J = 1,N )
20 CONTINUE
WRITE ( NOUT, FMT = 99994 )
DO 30 I = 1, L
WRITE ( NOUT, FMT = 99995 ) ( B(I,J), J = 1,M )
30 CONTINUE
WRITE ( NOUT, FMT = 99993 )
DO 40 I = 1, L
WRITE ( NOUT, FMT = 99995 ) ( Q(I,J), J = 1,L )
40 CONTINUE
END IF
END IF
END IF
END IF
STOP
*
99999 FORMAT (' TG01CD EXAMPLE PROGRAM RESULTS',/1X)
99998 FORMAT (' INFO on exit from TG01CD = ',I2)
99997 FORMAT (/' The transformed state dynamics matrix Q''*A is ')
99996 FORMAT (/' The transformed descriptor matrix Q''*E is ')
99995 FORMAT (20(1X,F8.4))
99994 FORMAT (/' The transformed input/state matrix Q''*B is ')
99993 FORMAT (/' The left transformation matrix Q is ')
99992 FORMAT (/' L is out of range.',/' L = ',I5)
99991 FORMAT (/' N is out of range.',/' N = ',I5)
99990 FORMAT (/' M is out of range.',/' M = ',I5)
END
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