ESMF_IsInitialized Function

    function ESMF_IsInitialized(keywordEnforcer, rc)
!
! !RETURN VALUE:
      logical :: ESMF_IsInitialized
!
! !ARGUMENTS:
type(ESMF_KeywordEnforcer), optional:: keywordEnforcer ! must use keywords below
      integer,                 intent(out), optional :: rc

!
! !DESCRIPTION:
!     Returns {\tt .true.} if the framework has been initialized. This means 
!     that {\tt ESMF\_Initialize()} has been called. Otherwise returns
!     {\tt .false.}. If an error occurs, i.e. {\tt rc /= ESMF\_SUCCESS} is 
!     returned, the return value of the function will also be {\tt .false.}.
!
!     The arguments are:
!     \begin{description}
!     \item [{[rc]}]
!           Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
!
!     \end{description}
!EOP
!------------------------------------------------------------------------------
      integer             :: localrc                        ! local return code
      type(ESMF_Logical)  :: flag
      
      ESMF_IsInitialized = .false.   ! default

      call c_ESMC_IsInitialized(flag, localrc)
      if (ESMF_LogFoundError(localrc, ESMF_ERR_PASSTHRU, &
        ESMF_CONTEXT, rcToReturn=rc)) return
        
      ESMF_IsInitialized = flag
      
      ! return successfully
      if (present(rc)) rc = ESMF_SUCCESS
      
    end function ESMF_IsInitialized