From b6a6d8da6042cf6c120d80fd2ce18d7fd11f1136 Mon Sep 17 00:00:00 2001
From: Davide Galassi <davxy@datawok.net>
Date: Wed, 21 Aug 2024 11:57:06 +0200
Subject: [PATCH] Generic domain size

---
 src/ring.rs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/ring.rs b/src/ring.rs
index e5a629c..f686dd9 100644
--- a/src/ring.rs
+++ b/src/ring.rs
@@ -151,10 +151,10 @@ where
     piop_params: PiopParams<S>,
 }
 
+// Evaluation domain size required for the given ring size.
 #[inline(always)]
-fn domain_size(ring_size: usize) -> usize {
-    const RING_DOMAIN_OVERHEAD: usize = 257;
-    1 << ark_std::log2(ring_size + RING_DOMAIN_OVERHEAD)
+fn domain_size<S: RingSuite>(ring_size: usize) -> usize {
+    1 << ark_std::log2(ring_size + ScalarField::<S>::MODULUS_BIT_SIZE as usize + 4)
 }
 
 #[allow(private_bounds)]