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C
C SPDX-License-Identifier: BSD-3-Clause
C
* MB02ED EXAMPLE PROGRAM TEXT
*
* .. Parameters ..
INTEGER NIN, NOUT
PARAMETER ( NIN = 5, NOUT = 6 )
INTEGER KMAX, NMAX
PARAMETER ( KMAX = 15, NMAX = 15 )
INTEGER LDB, LDT, LDWORK
PARAMETER ( LDB = KMAX*NMAX, LDT = KMAX*NMAX,
$ LDWORK = NMAX*KMAX*KMAX + ( NMAX+2 )*KMAX )
* .. Local Scalars ..
INTEGER I, INFO, J, K, M, N, NRHS
CHARACTER TYPET
* .. Local Arrays ..
* The arrays B and T are dimensioned for both TYPET = 'R' and
* TYPET = 'C'.
* NRHS is assumed to be not larger than KMAX*NMAX.
DOUBLE PRECISION B(LDB, KMAX*NMAX), DWORK(LDWORK),
$ T(LDT, KMAX*NMAX)
* .. External Functions ..
LOGICAL LSAME
EXTERNAL LSAME
* .. External Subroutines ..
EXTERNAL MB02ED
*
* .. Executable Statements ..
WRITE ( NOUT, FMT = 99999 )
* Skip the heading in the data file and read the data.
READ ( NIN, FMT = '()' )
READ ( NIN, FMT = * ) N, K, NRHS, TYPET
M = N*K
IF ( N.LE.0 .OR. N.GT.NMAX ) THEN
WRITE ( NOUT, FMT = 99994 ) N
ELSE
IF ( K.LE.0 .OR. K.GT.KMAX ) THEN
WRITE ( NOUT, FMT = 99993 ) K
ELSE
IF ( NRHS.LE.0 .OR. NRHS.GT.KMAX*NMAX ) THEN
WRITE ( NOUT, FMT = 99992 ) NRHS
ELSE
IF ( LSAME( TYPET, 'R' ) ) THEN
READ ( NIN, FMT = * ) ( ( T(I,J), J = 1,M ), I = 1,K )
ELSE
READ ( NIN, FMT = * ) ( ( T(I,J), J = 1,K ), I = 1,M )
END IF
IF ( LSAME( TYPET, 'R' ) ) THEN
READ (NIN, FMT = * ) ( ( B(I,J), J = 1,M ), I = 1,
$ NRHS )
ELSE
READ (NIN, FMT = * ) ( ( B(I,J), J = 1,NRHS ), I = 1,
$ M )
END IF
* Compute the solution of X T = B or T X = B.
CALL MB02ED( TYPET, K, N, NRHS, T, LDT, B, LDB, DWORK,
$ LDWORK, INFO )
IF ( INFO.NE.0 ) THEN
WRITE ( NOUT, FMT = 99998 ) INFO
ELSE
IF ( LSAME( TYPET, 'R' ) ) THEN
WRITE ( NOUT, FMT = 99997 )
DO 10 I = 1, NRHS
WRITE ( NOUT, FMT = 99995 ) ( B(I,J), J = 1, M )
10 CONTINUE
ELSE
WRITE ( NOUT, FMT = 99996 )
DO 20 I = 1, M
WRITE ( NOUT, FMT = 99995 ) ( B(I,J), J = 1,
$ NRHS )
20 CONTINUE
END IF
END IF
END IF
END IF
END IF
STOP
*
99999 FORMAT (' MB02ED EXAMPLE PROGRAM RESULTS',/1X)
99998 FORMAT (' INFO on exit from MB02ED = ',I2)
99997 FORMAT (' The solution of X*T = B is ')
99996 FORMAT (' The solution of T*X = B is ')
99995 FORMAT (20(1X,F8.4))
99994 FORMAT (/' N is out of range.',/' N = ',I5)
99993 FORMAT (/' K is out of range.',/' K = ',I5)
99992 FORMAT (/' NRHS is out of range.',/' NRHS = ',I5)
END
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