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C
C SPDX-License-Identifier: BSD-3-Clause
C
* SB08CD EXAMPLE PROGRAM TEXT
*
* .. Parameters ..
INTEGER NIN, NOUT
PARAMETER ( NIN = 5, NOUT = 6 )
INTEGER NMAX, MMAX, PMAX
PARAMETER ( NMAX = 20, MMAX = 20, PMAX = 20 )
INTEGER MPMAX
PARAMETER ( MPMAX = MAX( MMAX, PMAX ) )
INTEGER LDA, LDB, LDBR, LDC, LDD, LDDR
PARAMETER ( LDA = NMAX, LDB = NMAX, LDBR = NMAX,
$ LDC = MPMAX, LDD = MPMAX, LDDR = PMAX )
INTEGER LDWORK
PARAMETER ( LDWORK = NMAX*PMAX + MAX( NMAX*( NMAX + 5 ),
$ PMAX*( PMAX + 2 ), 4*PMAX, 4*MMAX ) )
* .. Local Scalars ..
DOUBLE PRECISION TOL
INTEGER I, INFO, IWARN, J, M, N, NQ, NR, P
CHARACTER*1 DICO
* .. Local Arrays ..
DOUBLE PRECISION A(LDA,NMAX), B(LDB,MPMAX), BR(LDBR,PMAX),
$ C(LDC,NMAX), D(LDD,MPMAX), DR(LDDR,PMAX),
$ DWORK(LDWORK)
* .. External Subroutines ..
EXTERNAL SB08CD
* .. Intrinsic Functions ..
INTRINSIC MAX
* .. Executable Statements ..
*
WRITE ( NOUT, FMT = 99999 )
* Skip the heading in the data file and read the data.
READ ( NIN, FMT = '()' )
READ ( NIN, FMT = * ) N, M, P, TOL, DICO
IF ( N.LT.0 .OR. N.GT.NMAX ) THEN
WRITE ( NOUT, FMT = 99990 ) N
ELSE
READ ( NIN, FMT = * ) ( ( A(I,J), J = 1, N ), I = 1, N )
IF ( M.LT.0 .OR. M.GT.MMAX ) THEN
WRITE ( NOUT, FMT = 99989 ) M
ELSE
READ ( NIN, FMT = * ) ( ( B(I,J), J = 1, M ), I = 1, N )
IF ( P.LT.0 .OR. P.GT.PMAX ) THEN
WRITE ( NOUT, FMT = 99988 ) P
ELSE
READ ( NIN, FMT = * ) ( ( C(I,J), J = 1, N ), I = 1, P )
READ ( NIN, FMT = * ) ( ( D(I,J), J = 1, M ), I = 1, P )
* Find a RCFID for (A,B,C,D).
CALL SB08CD( DICO, N, M, P, A, LDA, B, LDB, C, LDC,
$ D, LDD, NQ, NR, BR, LDBR, DR, LDDR, TOL,
$ DWORK, LDWORK, IWARN, INFO )
*
IF ( INFO.NE.0 ) THEN
WRITE ( NOUT, FMT = 99998 ) INFO
ELSE
IF( NQ.GT.0 ) WRITE ( NOUT, FMT = 99996 )
DO 20 I = 1, NQ
WRITE ( NOUT, FMT = 99995 ) ( A(I,J), J = 1, NQ )
20 CONTINUE
IF( NQ.GT.0 ) WRITE ( NOUT, FMT = 99993 )
DO 40 I = 1, NQ
WRITE ( NOUT, FMT = 99995 ) ( B(I,J), J = 1, M )
40 CONTINUE
IF( NQ.GT.0 ) WRITE ( NOUT, FMT = 99992 )
DO 60 I = 1, P
WRITE ( NOUT, FMT = 99995 ) ( C(I,J), J = 1, NQ )
60 CONTINUE
WRITE ( NOUT, FMT = 99991 )
DO 70 I = 1, P
WRITE ( NOUT, FMT = 99995 ) ( D(I,J), J = 1, M )
70 CONTINUE
IF( NR.GT.0 ) WRITE ( NOUT, FMT = 99986 )
DO 80 I = 1, NR
WRITE ( NOUT, FMT = 99995 )
$ ( A(I,J), J = 1, NR )
80 CONTINUE
IF( NR.GT.0 ) WRITE ( NOUT, FMT = 99985 )
DO 90 I = 1, NR
WRITE ( NOUT, FMT = 99995 ) ( BR(I,J), J = 1, P )
90 CONTINUE
IF( NR.GT.0 ) WRITE ( NOUT, FMT = 99984 )
DO 100 I = 1, P
WRITE ( NOUT, FMT = 99995 )
$ ( C(I,J), J = 1, NR )
100 CONTINUE
WRITE ( NOUT, FMT = 99983 )
DO 110 I = 1, P
WRITE ( NOUT, FMT = 99995 ) ( DR(I,J), J = 1, P )
110 CONTINUE
END IF
END IF
END IF
END IF
STOP
*
99999 FORMAT (' SB08CD EXAMPLE PROGRAM RESULTS',/1X)
99998 FORMAT (' INFO on exit from SB08CD = ',I2)
99996 FORMAT (/' The numerator state dynamics matrix AQ is ')
99995 FORMAT (20(1X,F8.4))
99993 FORMAT (/' The numerator input/state matrix BQ is ')
99992 FORMAT (/' The numerator state/output matrix CQ is ')
99991 FORMAT (/' The numerator input/output matrix DQ is ')
99990 FORMAT (/' N is out of range.',/' N = ',I5)
99989 FORMAT (/' M is out of range.',/' M = ',I5)
99988 FORMAT (/' P is out of range.',/' P = ',I5)
99986 FORMAT (/' The denominator state dynamics matrix AR is ')
99985 FORMAT (/' The denominator input/state matrix BR is ')
99984 FORMAT (/' The denominator state/output matrix CR is ')
99983 FORMAT (/' The denominator input/output matrix DR is ')
END
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