ESMF_TimeIntervalNegate Function

      function ESMF_TimeIntervalNegate(timeinterval)

! !RETURN VALUE:
      type(ESMF_TimeInterval) :: ESMF_TimeIntervalNegate

! !ARGUMENTS: 
      type(ESMF_TimeInterval), intent(in) :: timeinterval

! !DESCRIPTION:
!     This method overloads the (-) operator for the {\tt ESMF\_TimeInterval}
!     class.  See "interface operator(-)" above for complete description.
!
!EOPI
! !REQUIREMENTS:
      integer :: localrc

      ! check input
      ESMF_INIT_CHECK_SHALLOW_SHORT(ESMF_TimeIntervalGetInit,timeinterval,localrc)

      ! invoke C to C++ entry point
      call c_ESMC_TimeIntervalNegate(timeinterval, ESMF_TimeIntervalNegate)

      ! mark output as successfully initialized
      call ESMF_TimeIntervalInit(ESMF_TimeIntervalNegate)

      end function ESMF_TimeIntervalNegate