From 9ef46c3198a5a27b30e62fa339ded5ef066e820a Mon Sep 17 00:00:00 2001
From: YaoGalteland <yaojgalteland@yao.home>
Date: Thu, 21 Mar 2024 12:55:14 +0100
Subject: [PATCH] update lookup_range_check

---
 halo2_gadgets/src/utilities/lookup_range_check.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/halo2_gadgets/src/utilities/lookup_range_check.rs b/halo2_gadgets/src/utilities/lookup_range_check.rs
index 3f9ed3411d..2324972613 100644
--- a/halo2_gadgets/src/utilities/lookup_range_check.rs
+++ b/halo2_gadgets/src/utilities/lookup_range_check.rs
@@ -229,7 +229,8 @@ impl<F: PrimeFieldBits, const K: usize> LookupRangeCheckConfig<F, K> {
         )
     }
 
-    pub fn create_lookup_subtable(&self, table: &mut Table<F>, index_start: usize, index_size: usize) -> Result<(), Error> {
+    // create a lookup range check subtable for an 'index_size'-bit
+    fn create_lookup_subtable(&self, table: &mut Table<F>, index_start: usize, index_size: usize) -> Result<(), Error> {
         for index in 0..(1 << index_size) {
             let new_index = index + index_start;
             table.assign_cell(