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* MB03UD EXAMPLE PROGRAM TEXT
* Copyright (c) 2002-2010 NICONET e.V.
*
* .. Parameters ..
INTEGER NIN, NOUT
PARAMETER ( NIN = 5, NOUT = 6 )
INTEGER NMAX
PARAMETER ( NMAX = 10 )
INTEGER LDA, LDQ
PARAMETER ( LDA = NMAX, LDQ = NMAX )
INTEGER LDWORK
PARAMETER ( LDWORK = MAX( 1, 5*NMAX ) )
* .. Local Scalars ..
CHARACTER*1 JOBQ, JOBP
INTEGER I, INFO, J, N
* .. Local Arrays ..
DOUBLE PRECISION A(LDA,NMAX), DWORK(LDWORK), Q(LDQ,NMAX),
$ SV(NMAX)
* .. External Functions ..
LOGICAL LSAME
* .. External Subroutines ..
EXTERNAL MB03UD
* .. 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, JOBQ, JOBP
IF ( N.LT.0 .OR. N.GT.NMAX ) THEN
WRITE ( NOUT, FMT = 99993 ) N
ELSE
READ ( NIN, FMT = * ) ( ( A(I,J), J = 1,N ), I = 1,N )
* Compute the singular values and vectors.
CALL MB03UD( JOBQ, JOBP, N, A, LDA, Q, LDQ, SV, DWORK,
$ LDWORK, INFO )
IF ( INFO.NE.0 ) THEN
WRITE ( NOUT, FMT = 99998 ) INFO
ELSE
WRITE ( NOUT, FMT = 99997 )
WRITE ( NOUT, FMT = 99995 ) ( SV(I), I = 1,N )
IF ( LSAME( JOBP, 'V' ) ) THEN
WRITE ( NOUT, FMT = 99996 )
DO 10 I = 1, N
WRITE ( NOUT, FMT = 99995 ) ( A(I,J), J = 1,N )
10 CONTINUE
END IF
IF ( LSAME( JOBQ, 'V' ) ) THEN
WRITE ( NOUT, FMT = 99994 )
DO 20 I = 1, N
WRITE ( NOUT, FMT = 99995 ) ( Q(I,J), J = 1,N )
20 CONTINUE
END IF
END IF
END IF
*
STOP
*
99999 FORMAT (' MB03UD EXAMPLE PROGRAM RESULTS',/1X)
99998 FORMAT (' INFO on exit from MB03UD = ',I2)
99997 FORMAT (' Singular values are ',I5)
99996 FORMAT (/' The transpose of the right singular vectors matrix is '
$ )
99995 FORMAT (8X,20(1X,F8.4))
99994 FORMAT (/' The left singular vectors matrix is ')
99993 FORMAT (/' N is out of range.',/' N = ',I5)
END
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