*     F11MKF Example Program Text
*     Mark 21 Release. NAG Copyright 2004.
*     .. Parameters ..
      INTEGER          NIN, NOUT
      PARAMETER        (NIN=5,NOUT=6)
      INTEGER          LA, NMAX, LDB, LDC
      PARAMETER        (LA=10000,NMAX=1000,LDB=NMAX,LDC=NMAX)
      DOUBLE PRECISION ALPHA, BETA
      PARAMETER        (ALPHA=1.D0,BETA=0.D0)
      INTEGER          MMAX
      PARAMETER        (MMAX=5)
*     .. Local Scalars ..
      INTEGER          I, IFAIL, J, M, N, NNZ
      CHARACTER        TRANS
*     .. Local Arrays ..
      DOUBLE PRECISION A(LA), B(LDB,MMAX), C(LDC,MMAX)
      INTEGER          ICOLZP(NMAX+1), IROWIX(LA)
*     .. External Subroutines ..
      EXTERNAL         F11MKF, X04CAF
*     .. Executable Statements ..
      WRITE (NOUT,*) 'F11MKF Example Program Results'
*     Skip heading in data file
      READ (NIN,*)
*
*     Read order of matrix
*
      READ (NIN,*) N, M
      IF (N.LE.NMAX .AND. M.LE.MMAX) THEN
*
*        Read the matrix A
*
         DO 20 I = 1, N + 1
            READ (NIN,*) ICOLZP(I)
   20    CONTINUE
         NNZ = ICOLZP(N+1) - 1
         DO 40 I = 1, NNZ
            READ (NIN,*) A(I), IROWIX(I)
   40    CONTINUE
*
*        Read the matrix B
*
         DO 60 J = 1, M
            READ (NIN,*) (B(I,J),I=1,N)
   60    CONTINUE
*
*        Calculate matrix-matrix product
*
         TRANS = 'N'
         IFAIL = 1
         CALL F11MKF(TRANS,N,M,ALPHA,ICOLZP,IROWIX,A,B,LDB,BETA,C,LDC,
     +               IFAIL)
         IF (IFAIL.EQ.0) THEN
*
*           Output results
*
            WRITE (NOUT,*)
            CALL X04CAF('G',' ',N,M,C,LDC,'Matrix-vector product',IFAIL)
*
*           Calculate transposed matrix-matrix product
*
            TRANS = 'T'
            IFAIL = 1
            CALL F11MKF(TRANS,N,M,ALPHA,ICOLZP,IROWIX,A,B,LDB,BETA,C,
     +                  LDC,IFAIL)
            IF (IFAIL.EQ.0) THEN
*
*              Output results
*
               WRITE (NOUT,*)
               CALL X04CAF('G',' ',N,M,C,LDC,
     +                     'Transposed matrix-vector product',IFAIL)
            END IF
         END IF
         IF (IFAIL.NE.0) THEN
            WRITE (NOUT,99999) IFAIL
         END IF
*
      END IF
*
99999 FORMAT (1X,/1X,' ** F11MKF returned with IFAIL = ',I5)
      END