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Added noise equation for keyswitch over GGSW & updated associated test

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This commit is contained in:
Jean-Philippe Bossuat
2025-05-20 14:36:26 +02:00
parent 7d84477e64
commit a803127424
5 changed files with 107 additions and 29 deletions
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6
core/src/test_fft64/glwe_fourier.rs
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@@ -6,7 +6,7 @@ use crate::{
glwe_plaintext::GLWEPlaintext,
keys::{SecretKey, SecretKeyFourier},
keyswitch_key::GLWESwitchingKey,
test_fft64::{gglwe::noise_gglwe_product, ggsw::noise_ggsw_product},
test_fft64::{gglwe::log2_std_noise_gglwe_product, ggsw::noise_ggsw_product},
};
use base2k::{FFT64, FillUniform, Module, ScalarZnx, ScalarZnxAlloc, ScratchOwned, Stats, VecZnxOps, VecZnxToMut, ZnxViewMut};
use sampling::source::Source;
@@ -132,7 +132,7 @@ fn test_keyswitch(
module.vec_znx_sub_ab_inplace(&mut pt_have, 0, &pt_want, 0);
let noise_have: f64 = pt_have.data.std(0, basek).log2();
let noise_want: f64 = noise_gglwe_product(
let noise_want: f64 = log2_std_noise_gglwe_product(
module.n() as f64,
basek,
0.5,
@@ -220,7 +220,7 @@ fn test_keyswitch_inplace(log_n: usize, basek: usize, k_ksk: usize, k_ct: usize,
module.vec_znx_sub_ab_inplace(&mut pt_have, 0, &pt_want, 0);
let noise_have: f64 = pt_have.data.std(0, basek).log2();
let noise_want: f64 = noise_gglwe_product(
let noise_want: f64 = log2_std_noise_gglwe_product(
module.n() as f64,
basek,
0.5,