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Added support for arbitrary extended LUT

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This commit is contained in:
Jean-Philippe Bossuat
2025-06-19 16:33:47 +02:00
parent 6a006b442a
commit 4c1a84d702
17 changed files with 219 additions and 96 deletions
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2
backend/src/scalar_znx.rs
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@@ -93,7 +93,7 @@ impl<D: AsMut<[u8]> + AsRef<[u8]>> ScalarZnx<D> {
pub fn fill_binary_block(&mut self, col: usize, block_size: usize, source: &mut Source) {
assert!(self.n() % block_size == 0);
let max_idx: u64 = (block_size + 1) as u64;
let mask_idx: u64 = (1<<((u64::BITS - max_idx.leading_zeros())as u64)) - 1 ;
let mask_idx: u64 = (1 << ((u64::BITS - max_idx.leading_zeros()) as u64)) - 1;
for block in self.at_mut(col, 0).chunks_mut(block_size) {
let idx: usize = source.next_u64n(max_idx, mask_idx) as usize;
if idx != block_size {