Added PrepareScratchSpace trait

poulpy-core/src/layouts/prepared/glwe_pk.rs

@@ -8,7 +8,7 @@ use crate::{
     dist::Distribution,
     layouts::{
         Base2K, BuildError, Degree, GLWEInfos, GLWEPublicKey, LWEInfos, Rank, TorusPrecision,
-        prepared::{Prepare, PrepareAlloc},
+        prepared::{Prepare, PrepareAlloc, PrepareScratchSpace},
     },
 };
 
@@ -180,6 +180,12 @@ where
     }
 }
 
+impl<DR: DataRef, B: Backend, A: GLWEInfos> PrepareScratchSpace<B, A> for GLWEPublicKeyPrepared<DR, B> {
+    fn prepare_scratch_space(&self, _module: &Module<B>, _infos: &A) -> usize {
+        0
+    }
+}
+
 impl<DM: DataMut, DR: DataRef, B: Backend> Prepare<B, GLWEPublicKey<DR>> for GLWEPublicKeyPrepared<DM, B>
 where
     Module<B>: VecZnxDftApply<B>,