Function pgx_pg_sys::histogram_selectivity

pub unsafe fn histogram_selectivity(
    arg_vardata: *mut VariableStatData, 
    arg_opproc: *mut FmgrInfo, 
    arg_collation: Oid, 
    arg_constval: Datum, 
    arg_varonleft: bool, 
    arg_min_hist_size: c_int, 
    arg_n_skip: c_int, 
    arg_hist_size: *mut c_int
) -> f64