Function pgx_pg_sys::cost_gather_merge

pub unsafe fn cost_gather_merge(
    arg_path: *mut GatherMergePath, 
    arg_root: *mut PlannerInfo, 
    arg_rel: *mut RelOptInfo, 
    arg_param_info: *mut ParamPathInfo, 
    arg_input_startup_cost: Cost, 
    arg_input_total_cost: Cost, 
    arg_rows: *mut f64
)