Function pgx_pg_sys::mcv_selectivity

pub unsafe fn mcv_selectivity(
    arg_vardata: *mut VariableStatData, 
    arg_opproc: *mut FmgrInfo, 
    arg_collation: Oid, 
    arg_constval: Datum, 
    arg_varonleft: bool, 
    arg_sumcommonp: *mut f64
) -> f64