Function pgrx_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