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* MB05OD EXAMPLE PROGRAM TEXT
* Copyright (c) 2002-2010 NICONET e.V.
*
* .. Parameters ..
INTEGER NIN, NOUT
PARAMETER ( NIN = 5, NOUT = 6 )
INTEGER NMAX
PARAMETER ( NMAX = 20 )
INTEGER LDA
PARAMETER ( LDA = NMAX )
INTEGER NDIAG
PARAMETER ( NDIAG = 9 )
INTEGER LDWORK
PARAMETER ( LDWORK = NMAX*( 2*NMAX+NDIAG+1 )+NDIAG )
* .. Local Scalars ..
DOUBLE PRECISION DELTA
INTEGER I, IDIG, INFO, IWARN, J, MDIG, N
CHARACTER*1 BALANC
* .. Local Arrays ..
DOUBLE PRECISION A(LDA,NMAX), DWORK(LDWORK)
INTEGER IWORK(NMAX)
* .. External Subroutines ..
EXTERNAL MB05OD
* .. Executable Statements ..
*
WRITE ( NOUT, FMT = 99999 )
* Skip the heading in the data file and read the data.
READ ( NIN, FMT = '()' )
READ ( NIN, FMT = * ) N, DELTA, BALANC
IF ( N.LE.0 .OR. N.GT.NMAX ) THEN
WRITE ( NOUT, FMT = 99994 ) N
ELSE
READ ( NIN, FMT = * ) ( ( A(I,J), J = 1,N ), I = 1,N )
* Find the exponential of the real defective matrix A*DELTA.
CALL MB05OD( BALANC, N, NDIAG, DELTA, A, LDA, MDIG, IDIG,
$ IWORK, DWORK, LDWORK, IWARN, INFO )
*
IF ( INFO.NE.0 ) THEN
WRITE ( NOUT, FMT = 99998 ) INFO
ELSE
IF ( IWARN.NE.0 )
$ WRITE ( NOUT, FMT = 99993 ) IWARN
WRITE ( NOUT, FMT = 99997 )
DO 20 I = 1, N
WRITE ( NOUT, FMT = 99996 ) ( A(I,J), J = 1,N )
20 CONTINUE
WRITE ( NOUT, FMT = 99995 ) MDIG, IDIG
END IF
END IF
STOP
*
99999 FORMAT (' MB05OD EXAMPLE PROGRAM RESULTS',/1X)
99998 FORMAT (' INFO on exit from MB05OD = ',I2)
99997 FORMAT (' The solution matrix E = exp(A*DELTA) is ')
99996 FORMAT (20(1X,F8.4))
99995 FORMAT (/' Minimal number of accurate digits in the norm of E =',
$ I4,/' Number of accurate digits in the norm of E',/' ',
$ ' at 95 per cent confidence interval =',I4)
99994 FORMAT (/' N is out of range.',/' N = ',I5)
99993 FORMAT (' IWARN on exit from MB05OD = ',I2)
END
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