* F01QJF Example Program Text * Mark 14 Release. NAG Copyright 1989. * .. Parameters .. INTEGER NIN, NOUT PARAMETER (NIN=5,NOUT=6) INTEGER MMAX, NMAX, LDA PARAMETER (MMAX=10,NMAX=20,LDA=NMAX) * .. Local Scalars .. INTEGER I, IFAIL, J, M, N * .. Local Arrays .. DOUBLE PRECISION A(LDA,NMAX), ZETA(MMAX) * .. External Subroutines .. EXTERNAL F01QJF * .. Executable Statements .. WRITE (NOUT,*) 'F01QJF Example Program Results' * Skip heading in data file READ (NIN,*) READ (NIN,*) M, N WRITE (NOUT,*) IF ((M.GT.MMAX) .OR. (N.GT.NMAX)) THEN WRITE (NOUT,*) WRITE (NOUT,*) 'M or N is out of range.' WRITE (NOUT,99999) 'M = ', M, ' N = ', N ELSE READ (NIN,*) ((A(I,J),J=1,N),I=1,M) IFAIL = 1 * * Find the RQ factorization of A CALL F01QJF(M,N,A,LDA,ZETA,IFAIL) * IF (IFAIL.EQ.0) THEN WRITE (NOUT,*) 'RQ factorization of A' WRITE (NOUT,*) WRITE (NOUT,*) 'Vector ZETA' WRITE (NOUT,99998) (ZETA(I),I=1,M) WRITE (NOUT,*) WRITE (NOUT,*) + 'Matrix A after factorization (R is in left-hand upper triangle)' DO 20 I = 1, M WRITE (NOUT,99998) (A(I,J),J=1,N) 20 CONTINUE ELSE WRITE (NOUT,99997) IFAIL END IF END IF * 99999 FORMAT (1X,A,I5,A,I5) 99998 FORMAT (5(1X,F8.4)) 99997 FORMAT (1X,/1X,' ** F01QJF returned with IFAIL = ',I5) END