Add cross-basek normalization (#90)

* added cross_basek_normalization

* updated method signatures to take layouts

* fixed cross-base normalization

fix #91
fix #93

poulpy-hal/src/layouts/vec_znx.rs

@@ -6,8 +6,8 @@ use std::{
 use crate::{
     alloc_aligned,
     layouts::{
-        Data, DataMut, DataRef, DataView, DataViewMut, DigestU64, FillUniform, ReaderFrom, Reset, ToOwnedDeep, WriterTo,
-        ZnxInfos, ZnxSliceSize, ZnxView, ZnxViewMut, ZnxZero,
+        Data, DataMut, DataRef, DataView, DataViewMut, DigestU64, FillUniform, ReaderFrom, ToOwnedDeep, WriterTo, ZnxInfos,
+        ZnxSliceSize, ZnxView, ZnxViewMut, ZnxZero,
     },
     source::Source,
 };
@@ -25,6 +25,18 @@ pub struct VecZnx<D: Data> {
     pub max_size: usize,
 }
 
+impl<D: Data + Default> Default for VecZnx<D> {
+    fn default() -> Self {
+        Self {
+            data: D::default(),
+            n: 0,
+            cols: 0,
+            size: 0,
+            max_size: 0,
+        }
+    }
+}
+
 impl<D: DataRef> DigestU64 for VecZnx<D> {
     fn digest_u64(&self) -> u64 {
         let mut h: DefaultHasher = DefaultHasher::new();
@@ -52,7 +64,7 @@ impl<D: DataRef> ToOwnedDeep for VecZnx<D> {
 
 impl<D: DataRef> fmt::Debug for VecZnx<D> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "{}", self)
+        write!(f, "{self}")
     }
 }
 
@@ -162,10 +174,10 @@ impl<D: DataRef> fmt::Display for VecZnx<D> {
         )?;
 
         for col in 0..self.cols {
-            writeln!(f, "Column {}:", col)?;
+            writeln!(f, "Column {col}:")?;
             for size in 0..self.size {
                 let coeffs = self.at(col, size);
-                write!(f, "  Size {}: [", size)?;
+                write!(f, "  Size {size}: [")?;
 
                 let max_show = 100;
                 let show_count = coeffs.len().min(max_show);
@@ -174,7 +186,7 @@ impl<D: DataRef> fmt::Display for VecZnx<D> {
                     if i > 0 {
                         write!(f, ", ")?;
                     }
-                    write!(f, "{}", coeff)?;
+                    write!(f, "{coeff}")?;
                 }
 
                 if coeffs.len() > max_show {
@@ -204,16 +216,6 @@ impl<D: DataMut> FillUniform for VecZnx<D> {
     }
 }
 
-impl<D: DataMut> Reset for VecZnx<D> {
-    fn reset(&mut self) {
-        self.zero();
-        self.n = 0;
-        self.cols = 0;
-        self.size = 0;
-        self.max_size = 0;
-    }
-}
-
 pub type VecZnxOwned = VecZnx<Vec<u8>>;
 pub type VecZnxMut<'a> = VecZnx<&'a mut [u8]>;
 pub type VecZnxRef<'a> = VecZnx<&'a [u8]>;