Function tcod_sys::TCOD_heightmap_rain_erosion

pub unsafe extern fn TCOD_heightmap_rain_erosion(hm: *mut TCOD_heightmap_t,
                                                 nbDrops: c_int,
                                                 erosionCoef: c_float,
                                                 sedimentationCoef: c_float,
                                                 rnd: TCOD_random_t)