integer res
integer :: continuous
real(8) :: firsttime, lasttime
TYPE(C_PTR) :: peph

peph = calceph_open("example1.dat"//C_NULL_CHAR)
if (C_ASSOCIATED(peph)) then
     if (calceph_gettimespan(peph, firsttime, lasttime, continuous).eq.1) then
        write (*,*) firsttime, lasttime, countinuous
    endif

    call calceph_close(peph)
 endif