Is function cap_inf_rate() misused?

[wanghai1988]

in function cap_inf_rate(float dt_h, float h, float infrate),The unit of Parameter “dt_h” should be hours,but in function inf_ga(), call cap_inf_rate() use "dt" instead of "dt_h", is this misused?

def inf_ga(DTYPE_t [:, :] arr_h, DTYPE_t [:, :] arr_eff_por,
        DTYPE_t [:, :] arr_pressure, DTYPE_t [:, :] arr_conduct,
        DTYPE_t [:, :] arr_inf_amount, DTYPE_t [:, :] arr_water_soil_content,
        DTYPE_t [:, :] arr_inf_out, float dt):
    '''Calculate infiltration rate using the Green-Ampt formula
    '''
    cdef int rmax, cmax, r, c
    cdef float dt_h, infrate, avail_porosity, poros_cappress, conduct
    rmax = arr_h.shape[0]
    cmax = arr_h.shape[1]
    for r in prange(rmax, nogil=True):
        for c in range(cmax):
            dt_h = dt / 3600.  # dt from sec to hours
            conduct = arr_conduct[r, c]
            avail_porosity = arr_eff_por[r, c] - arr_water_soil_content[r, c]
            poros_cappress = avail_porosity * arr_pressure[r, c]
            infrate = conduct * (1 +
                            (poros_cappress / arr_inf_amount[r, c]))
            # cap the rate
            infrate = cap_inf_rate(dt, arr_h[r, c], infrate)
            # update total infiltration amount
            arr_inf_amount[r, c] += infrate * dt_h
            # populate output infiltration array
            arr_inf_out[r, c] = infrate