CFIO_GetMissing Function

      real function CFIO_GetMissing ( fid, rc )

!
! !USES:
!
      Implicit NONE
!
! !INPUT PARAMETERS:

      integer fid      ! file id
      integer rc       ! Error code

!
! !REVISION HISTORY:
!
!  1999.11.01  da Silva  Initial code.
!
!EOP
!-------------------------------------------------------------------------

      integer nDims, recdim, ngatts
      integer varType, nvDims, vDims(MAXVDIMS), nvAtts
      character(len=MAXCHR) vnameTemp
      integer i
      integer attType, attLen
      integer allVars            ! all variables - includes dimension vars

      real(kind=REAL32) amiss_32

! Get basic information from the file

      rc = NF90_INQUIRE (fid,nDims,allVars,ngatts,recdim)
      if (err("Inqure: NF90_INQUIRE failed",rc,-48) .NE. 0) return


      do i= 1, allVars
        rc = NF90_INQUIRE_VARIABLE (fid,i,vnameTemp,varType,nvDims,vDims,nvAtts)
        if (err("CFIO_GetMissing: variable inquire error",rc,-52) .NE. 0) return
        if (nvDims .EQ. 1) then   ! coord variable
          cycle
        else                      ! noon-coord variable
          rc = NF90_GET_ATT(fid,i,'fmissing_value',amiss_32)
           if (rc .NE. 0) then
              rc = NF90_INQUIRE_ATTRIBUTE (fid, i, 'missing_value', attType, attLen)
              if (rc.eq.0 .and. attType .EQ. NF90_FLOAT) then
                 rc = NF90_GET_ATT(fid,allVars,'missing_value',amiss_32)
                 if (err("CFIO_GetMissing: error getting missing value",rc,-53) &
                     .NE. 0) return
              else
                    print *,  &
                   'CFIO_GetMissing: Cannot find missing value, assuming 1E+15'
                    amiss_32 = 1.0E+15
              end if
           endif
           exit    ! just check first non-ccordinate variable
        endif
      end do

      CFIO_GetMissing = amiss_32

      rc = 0
      end function CFIO_GetMissing