From ee54b295d9c478ab4e0c1175c788fefbaea237a3 Mon Sep 17 00:00:00 2001
From: wborgeaud <williamborgeaud@gmail.com>
Date: Thu, 29 Sep 2022 15:24:43 +0200
Subject: [PATCH] Use u64 instead of usize

---
 plonky2/src/gates/base_sum.rs | 2 +-
 util/src/lib.rs               | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/plonky2/src/gates/base_sum.rs b/plonky2/src/gates/base_sum.rs
index 93ac7e8d..5be54eeb 100644
--- a/plonky2/src/gates/base_sum.rs
+++ b/plonky2/src/gates/base_sum.rs
@@ -34,7 +34,7 @@ impl<const B: usize> BaseSumGate<B> {
 
     pub fn new_from_config<F: Field64>(config: &CircuitConfig) -> Self {
         let num_limbs =
-            log_floor(F::ORDER as usize - 1, B).min(config.num_routed_wires - Self::START_LIMBS);
+            log_floor(F::ORDER - 1, B as u64).min(config.num_routed_wires - Self::START_LIMBS);
         Self::new(num_limbs)
     }
 
diff --git a/util/src/lib.rs b/util/src/lib.rs
index 3136a4b2..bbc2af98 100644
--- a/util/src/lib.rs
+++ b/util/src/lib.rs
@@ -39,11 +39,11 @@ pub fn log2_strict(n: usize) -> usize {
 }
 
 /// Returns the largest integer `i` such that `base**i <= n`.
-pub const fn log_floor(n: usize, base: usize) -> usize {
+pub const fn log_floor(n: u64, base: u64) -> usize {
     assert!(n > 0);
     assert!(base > 1);
     let mut i = 0;
-    let mut cur: usize = 1;
+    let mut cur: u64 = 1;
     loop {
         let (mul, overflow) = cur.overflowing_mul(base);
         if overflow || mul > n {