ESMF_ClockSyncToRealTime Subroutine

      subroutine ESMF_ClockSyncToRealTime(clock, keywordEnforcer, rc)

! !ARGUMENTS:
      type(ESMF_Clock), intent(inout)         :: clock
      type(ESMF_KeywordEnforcer), optional:: keywordEnforcer ! must use keywords below
      integer,          intent(out), optional :: rc

!
! !STATUS:
! \begin{itemize}
! \item\apiStatusCompatibleVersion{5.2.0r}
! \end{itemize}
!
! !DESCRIPTION:
!     Sets a {\tt clock}'s current time to the wall clock time.  It is
!     accurate to the nearest second.
!
!     The arguments are:
!     \begin{description}
!     \item[clock]
!          The object instance to be synchronized with wall clock time.
!     \item[{[rc]}]
!          Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
!     \end{description}
!
!EOP
! !REQUIREMENTS:
!     TMG3.4.5
      integer :: localrc                        ! local return code

      ! Assume failure until success
      if (present(rc)) rc = ESMF_RC_NOT_IMPL
      localrc = ESMF_RC_NOT_IMPL

      ! check input
      ESMF_INIT_CHECK_DEEP(ESMF_ClockGetInit,clock,rc)

      ! invoke C to C++ entry point
      call c_ESMC_ClockSyncToRealTime(clock, localrc)
      if (ESMF_LogFoundError(localrc, ESMF_ERR_PASSTHRU, &
        ESMF_CONTEXT, rcToReturn=rc)) return

      ! Return success
      if (present(rc)) rc = ESMF_SUCCESS
      end subroutine ESMF_ClockSyncToRealTime