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removed div_ceil

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This commit is contained in:
Jean-Philippe Bossuat
2025-06-17 09:33:04 +02:00
parent e6ec588d6d
commit 4753b73cc7
15 changed files with 103 additions and 112 deletions
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18
core/src/glwe_ciphertext_fourier.rs
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@@ -4,7 +4,7 @@ use backend::{
};
use sampling::source::Source;
use crate::{GGSWCiphertext, GLWECiphertext, GLWEPlaintext, GLWESecret, GLWESwitchingKey, Infos, ScratchCore, div_ceil};
use crate::{GGSWCiphertext, GLWECiphertext, GLWEPlaintext, GLWESecret, GLWESwitchingKey, Infos, ScratchCore};
pub struct GLWECiphertextFourier<C, B: Backend> {
pub data: VecZnxDft<C, B>,
@@ -15,14 +15,14 @@ pub struct GLWECiphertextFourier<C, B: Backend> {
impl<B: Backend> GLWECiphertextFourier<Vec<u8>, B> {
pub fn alloc(module: &Module<B>, basek: usize, k: usize, rank: usize) -> Self {
Self {
data: module.new_vec_znx_dft(rank + 1, div_ceil(k, basek)),
data: module.new_vec_znx_dft(rank + 1, k.div_ceil(basek)),
basek: basek,
k: k,
}
}
pub fn bytes_of(module: &Module<B>, basek: usize, k: usize, rank: usize) -> usize {
module.bytes_of_vec_znx_dft(rank + 1, div_ceil(k, basek))
module.bytes_of_vec_znx_dft(rank + 1, k.div_ceil(basek))
}
}
@@ -51,16 +51,16 @@ impl<T, B: Backend> GLWECiphertextFourier<T, B> {
impl GLWECiphertextFourier<Vec<u8>, FFT64> {
#[allow(dead_code)]
pub(crate) fn idft_scratch_space(module: &Module<FFT64>, basek: usize, k: usize) -> usize {
module.bytes_of_vec_znx(1, div_ceil(k, basek))
module.bytes_of_vec_znx(1, k.div_ceil(basek))
+ (module.vec_znx_big_normalize_tmp_bytes() | module.vec_znx_idft_tmp_bytes())
}
pub fn encrypt_sk_scratch_space(module: &Module<FFT64>, basek: usize, k: usize, rank: usize) -> usize {
module.bytes_of_vec_znx(rank + 1, div_ceil(k, basek)) + GLWECiphertext::encrypt_sk_scratch_space(module, basek, k)
module.bytes_of_vec_znx(rank + 1, k.div_ceil(basek)) + GLWECiphertext::encrypt_sk_scratch_space(module, basek, k)
}
pub fn decrypt_scratch_space(module: &Module<FFT64>, basek: usize, k: usize) -> usize {
let size: usize = div_ceil(k, basek);
let size: usize = k.div_ceil(basek);
(module.vec_znx_big_normalize_tmp_bytes()
| module.bytes_of_vec_znx_dft(1, size)
| (module.bytes_of_vec_znx_big(1, size) + module.vec_znx_idft_tmp_bytes()))
@@ -102,10 +102,10 @@ impl GLWECiphertextFourier<Vec<u8>, FFT64> {
digits: usize,
rank: usize,
) -> usize {
let ggsw_size: usize = div_ceil(k_ggsw, basek);
let ggsw_size: usize = k_ggsw.div_ceil(basek);
let res_dft: usize = module.bytes_of_vec_znx_dft(rank + 1, ggsw_size);
let in_size: usize = div_ceil(div_ceil(k_in, basek), digits);
let ggsw_size: usize = div_ceil(k_ggsw, basek);
let in_size: usize = k_in.div_ceil(basek).div_ceil(digits);
let ggsw_size: usize = k_ggsw.div_ceil(basek);
let vmp: usize = module.bytes_of_vec_znx_dft(rank + 1, in_size)
+ module.vmp_apply_tmp_bytes(ggsw_size, in_size, in_size, rank + 1, rank + 1, ggsw_size);
let res_small: usize = module.bytes_of_vec_znx(rank + 1, ggsw_size);