neci_etime Function

    function neci_etime(time) result(ret)
        ! Return elapsed time for timing and calculation ending purposes.

        real(dp), intent(out) :: time(2)
        real(dp) :: ret

#if defined(IFORT_) || defined(INTELLLVM_)
        ! intels etime takes a real(4)
        real(sp) :: ioTime(2)
        ! Ifort defines etime directly in its compatibility modules.
        ! Avoid timing inaccuracies from using cpu_time on cerebro.
        ret = real(etime(ioTime), dp)
        time = real(ioTime, dp)
#else
#ifdef BLUEGENE_HACKS
        time = 0.0_dp
        ret = 0.0_dp
#else
        ! use MPI_WTIME - etime returns wall-clock time on multi-processor
        ! environments, so keep it consistent
        ret = MPI_WTIME()
        time(1) = ret
        time(2) = 0._dp
#endif
#endif

    end function neci_etime