diff --git a/core/src/gglwe_ciphertext.rs b/core/src/gglwe_ciphertext.rs
index 9d7c45a..9d2c79a 100644
--- a/core/src/gglwe_ciphertext.rs
+++ b/core/src/gglwe_ciphertext.rs
@@ -97,7 +97,6 @@ where
         source_xa: &mut Source,
         source_xe: &mut Source,
         sigma: f64,
-        bound: f64,
         scratch: &mut Scratch,
     ) where
         ScalarZnx<DataPt>: ScalarZnxToRef,
@@ -153,7 +152,6 @@ where
                 source_xa,
                 source_xe,
                 sigma,
-                bound,
                 scratch_3,
             );
 
diff --git a/core/src/ggsw_ciphertext.rs b/core/src/ggsw_ciphertext.rs
index 9d42df8..d277d78 100644
--- a/core/src/ggsw_ciphertext.rs
+++ b/core/src/ggsw_ciphertext.rs
@@ -119,7 +119,6 @@ where
         source_xa: &mut Source,
         source_xe: &mut Source,
         sigma: f64,
-        bound: f64,
         scratch: &mut Scratch,
     ) where
         ScalarZnx<DataPt>: ScalarZnxToRef,
@@ -168,7 +167,6 @@ where
                     source_xa,
                     source_xe,
                     sigma,
-                    bound,
                     scrach_2,
                 );
 
diff --git a/core/src/glwe_ciphertext.rs b/core/src/glwe_ciphertext.rs
index 56ca1a9..5f8d086 100644
--- a/core/src/glwe_ciphertext.rs
+++ b/core/src/glwe_ciphertext.rs
@@ -7,6 +7,7 @@ use base2k::{
 use sampling::source::Source;
 
 use crate::{
+    SIX_SIGMA,
     elem::Infos,
     gglwe_ciphertext::GGLWECiphertext,
     ggsw_ciphertext::GGSWCiphertext,
@@ -145,7 +146,6 @@ where
         source_xa: &mut Source,
         source_xe: &mut Source,
         sigma: f64,
-        bound: f64,
         scratch: &mut Scratch,
     ) where
         VecZnx<DataPt>: VecZnxToRef,
@@ -158,7 +158,6 @@ where
             source_xa,
             source_xe,
             sigma,
-            bound,
             scratch,
         );
     }
@@ -170,14 +169,11 @@ where
         source_xa: &mut Source,
         source_xe: &mut Source,
         sigma: f64,
-        bound: f64,
         scratch: &mut Scratch,
     ) where
         ScalarZnxDft<DataSk, FFT64>: ScalarZnxDftToRef<FFT64>,
     {
-        self.encrypt_sk_private(
-            module, None, sk_dft, source_xa, source_xe, sigma, bound, scratch,
-        );
+        self.encrypt_sk_private(module, None, sk_dft, source_xa, source_xe, sigma, scratch);
     }
 
     pub fn encrypt_pk<DataPt, DataPk>(
@@ -188,7 +184,6 @@ where
         source_xu: &mut Source,
         source_xe: &mut Source,
         sigma: f64,
-        bound: f64,
         scratch: &mut Scratch,
     ) where
         VecZnx<DataPt>: VecZnxToRef,
@@ -201,7 +196,6 @@ where
             source_xu,
             source_xe,
             sigma,
-            bound,
             scratch,
         );
     }
@@ -213,14 +207,11 @@ where
         source_xu: &mut Source,
         source_xe: &mut Source,
         sigma: f64,
-        bound: f64,
         scratch: &mut Scratch,
     ) where
         VecZnxDft<DataPk, FFT64>: VecZnxDftToRef<FFT64>,
     {
-        self.encrypt_pk_private(
-            module, None, pk, source_xu, source_xe, sigma, bound, scratch,
-        );
+        self.encrypt_pk_private(module, None, pk, source_xu, source_xe, sigma, scratch);
     }
 
     pub fn keyswitch<DataLhs, DataRhs>(
@@ -279,7 +270,6 @@ where
         source_xa: &mut Source,
         source_xe: &mut Source,
         sigma: f64,
-        bound: f64,
         scratch: &mut Scratch,
     ) where
         VecZnx<DataPt>: VecZnxToRef,
@@ -335,7 +325,7 @@ where
         }
 
         // c[0] += e
-        c0_big.add_normal(log_base2k, 0, log_k, source_xe, sigma, bound);
+        c0_big.add_normal(log_base2k, 0, log_k, source_xe, sigma, sigma * SIX_SIGMA);
 
         // c[0] += m if col = 0
         if let Some((pt, col)) = pt {
@@ -356,7 +346,6 @@ where
         source_xu: &mut Source,
         source_xe: &mut Source,
         sigma: f64,
-        bound: f64,
         scratch: &mut Scratch,
     ) where
         VecZnx<DataPt>: VecZnxToRef,
@@ -406,7 +395,7 @@ where
             let mut ci_big = module.vec_znx_idft_consume(ci_dft);
 
             // ci_big = u * pk[i] + e
-            ci_big.add_normal(log_base2k, 0, pk.k(), source_xe, sigma, bound);
+            ci_big.add_normal(log_base2k, 0, pk.k(), source_xe, sigma, sigma * SIX_SIGMA);
 
             // ci_big = u * pk[i] + e + m (if col = i)
             if let Some((pt, col)) = pt {
diff --git a/core/src/glwe_ciphertext_fourier.rs b/core/src/glwe_ciphertext_fourier.rs
index bcc7648..e31d0dc 100644
--- a/core/src/glwe_ciphertext_fourier.rs
+++ b/core/src/glwe_ciphertext_fourier.rs
@@ -122,7 +122,6 @@ where
         source_xa: &mut Source,
         source_xe: &mut Source,
         sigma: f64,
-        bound: f64,
         scratch: &mut Scratch,
     ) where
         ScalarZnxDft<DataSk, FFT64>: ScalarZnxDftToRef<FFT64>,
@@ -133,9 +132,7 @@ where
             basek: self.basek,
             k: self.k,
         };
-        ct_idft.encrypt_zero_sk(
-            module, sk_dft, source_xa, source_xe, sigma, bound, scratch_1,
-        );
+        ct_idft.encrypt_zero_sk(module, sk_dft, source_xa, source_xe, sigma, scratch_1);
 
         ct_idft.dft(module, self);
     }
diff --git a/core/src/keys.rs b/core/src/keys.rs
index d57fa73..8a4d5e1 100644
--- a/core/src/keys.rs
+++ b/core/src/keys.rs
@@ -216,7 +216,6 @@ impl<C> GLWEPublicKey<C, FFT64> {
         source_xa: &mut Source,
         source_xe: &mut Source,
         sigma: f64,
-        bound: f64,
     ) where
         VecZnxDft<C, FFT64>: VecZnxDftToMut<FFT64> + VecZnxDftToRef<FFT64>,
         ScalarZnxDft<S, FFT64>: ScalarZnxDftToRef<FFT64> + ZnxInfos,
@@ -241,7 +240,6 @@ impl<C> GLWEPublicKey<C, FFT64> {
             source_xa,
             source_xe,
             sigma,
-            bound,
             scratch.borrow(),
         );
         self.dist = sk_dft.dist;
diff --git a/core/src/keyswitch_key.rs b/core/src/keyswitch_key.rs
index 33d2a45..f9500a7 100644
--- a/core/src/keyswitch_key.rs
+++ b/core/src/keyswitch_key.rs
@@ -111,15 +111,13 @@ where
         source_xa: &mut Source,
         source_xe: &mut Source,
         sigma: f64,
-        bound: f64,
         scratch: &mut Scratch,
     ) where
         ScalarZnx<DataPt>: ScalarZnxToRef,
         ScalarZnxDft<DataSk, FFT64>: ScalarZnxDftToRef<FFT64>,
     {
-        self.0.encrypt_sk(
-            module, pt, sk_dft, source_xa, source_xe, sigma, bound, scratch,
-        );
+        self.0
+            .encrypt_sk(module, pt, sk_dft, source_xa, source_xe, sigma, scratch);
     }
 }
 
diff --git a/core/src/lib.rs b/core/src/lib.rs
index cdd83d1..14392df 100644
--- a/core/src/lib.rs
+++ b/core/src/lib.rs
@@ -10,3 +10,5 @@ pub mod keyswitch_key;
 mod test_fft64;
 mod utils;
 pub mod vec_glwe_product;
+
+pub(crate) const SIX_SIGMA: f64 = 6.0;
diff --git a/core/src/test_fft64/gglwe.rs b/core/src/test_fft64/gglwe.rs
index 7a7de6d..e4a566d 100644
--- a/core/src/test_fft64/gglwe.rs
+++ b/core/src/test_fft64/gglwe.rs
@@ -21,7 +21,6 @@ fn encrypt_sk() {
     let rank_out: usize = 1;
 
     let sigma: f64 = 3.2;
-    let bound: f64 = sigma * 6.0;
 
     let mut ct: GLWESwitchingKey<Vec<u8>, FFT64> = GLWESwitchingKey::new(&module, log_base2k, log_k_ct, rows, rank, rank_out);
     let mut pt: GLWEPlaintext<Vec<u8>> = GLWEPlaintext::new(&module, log_base2k, log_k_ct);
@@ -52,7 +51,6 @@ fn encrypt_sk() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -77,7 +75,6 @@ fn keyswitch() {
     let rank: usize = 1;
 
     let sigma: f64 = 3.2;
-    let bound: f64 = sigma * 6.0;
 
     let mut ct_grlwe_s0s1: GLWESwitchingKey<Vec<u8>, FFT64> =
         GLWESwitchingKey::new(&module, log_base2k, log_k_grlwe, rows, rank, rank);
@@ -127,7 +124,6 @@ fn keyswitch() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -139,7 +135,6 @@ fn keyswitch() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -188,7 +183,6 @@ fn keyswitch_inplace() {
     let rank_out: usize = 1;
 
     let sigma: f64 = 3.2;
-    let bound: f64 = sigma * 6.0;
 
     let mut ct_grlwe_s0s1: GLWESwitchingKey<Vec<u8>, FFT64> =
         GLWESwitchingKey::new(&module, log_base2k, log_k_grlwe, rows, rank, rank_out);
@@ -231,7 +225,6 @@ fn keyswitch_inplace() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -243,7 +236,6 @@ fn keyswitch_inplace() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -294,7 +286,6 @@ fn external_product() {
     let rank_out: usize = 1;
 
     let sigma: f64 = 3.2;
-    let bound: f64 = sigma * 6.0;
 
     let mut ct_grlwe_in: GLWESwitchingKey<Vec<u8>, FFT64> =
         GLWESwitchingKey::new(&module, log_base2k, log_k_grlwe, rows, rank, rank_out);
@@ -341,7 +332,6 @@ fn external_product() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -352,7 +342,6 @@ fn external_product() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -408,11 +397,10 @@ fn external_product_inplace() {
     let log_k_grlwe: usize = 60;
     let rows: usize = (log_k_grlwe + log_base2k - 1) / log_base2k;
 
-    let rank = 1;
-    let rank_out = 1;
+    let rank: usize = 1;
+    let rank_out: usize = 1;
 
     let sigma: f64 = 3.2;
-    let bound: f64 = sigma * 6.0;
 
     let mut ct_grlwe: GLWESwitchingKey<Vec<u8>, FFT64> =
         GLWESwitchingKey::new(&module, log_base2k, log_k_grlwe, rows, rank, rank_out);
@@ -452,7 +440,6 @@ fn external_product_inplace() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -463,7 +450,6 @@ fn external_product_inplace() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
diff --git a/core/src/test_fft64/ggsw.rs b/core/src/test_fft64/ggsw.rs
index ce16ea5..f1903c1 100644
--- a/core/src/test_fft64/ggsw.rs
+++ b/core/src/test_fft64/ggsw.rs
@@ -23,7 +23,6 @@ fn encrypt_sk() {
     let rank: usize = 1;
 
     let sigma: f64 = 3.2;
-    let bound: f64 = sigma * 6.0;
 
     let mut ct: GGSWCiphertext<Vec<u8>, FFT64> = GGSWCiphertext::new(&module, log_base2k, log_k_ct, rows, rank);
     let mut pt_have: GLWEPlaintext<Vec<u8>> = GLWEPlaintext::new(&module, log_base2k, log_k_ct);
@@ -54,7 +53,6 @@ fn encrypt_sk() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -99,7 +97,6 @@ fn keyswitch() {
     let rank: usize = 1;
 
     let sigma: f64 = 3.2;
-    let bound: f64 = sigma * 6.0;
 
     let mut ct_grlwe: GLWESwitchingKey<Vec<u8>, FFT64> =
         GLWESwitchingKey::new(&module, log_base2k, log_k_grlwe, rows, rank, rank);
@@ -145,7 +142,6 @@ fn keyswitch() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -156,7 +152,6 @@ fn keyswitch() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -220,7 +215,6 @@ fn keyswitch_inplace() {
     let rank: usize = 1;
 
     let sigma: f64 = 3.2;
-    let bound: f64 = sigma * 6.0;
 
     let mut ct_grlwe: GLWESwitchingKey<Vec<u8>, FFT64> =
         GLWESwitchingKey::new(&module, log_base2k, log_k_grlwe, rows, rank, rank);
@@ -260,7 +254,6 @@ fn keyswitch_inplace() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -271,7 +264,6 @@ fn keyswitch_inplace() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -336,7 +328,6 @@ fn external_product() {
     let rank: usize = 1;
 
     let sigma: f64 = 3.2;
-    let bound: f64 = sigma * 6.0;
 
     let mut ct_rgsw_rhs: GGSWCiphertext<Vec<u8>, FFT64> = GGSWCiphertext::new(&module, log_base2k, log_k_rgsw_rhs, rows, rank);
     let mut ct_rgsw_lhs_in: GGSWCiphertext<Vec<u8>, FFT64> =
@@ -382,7 +373,6 @@ fn external_product() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -393,7 +383,6 @@ fn external_product() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -468,7 +457,6 @@ fn external_product_inplace() {
     let rank: usize = 1;
 
     let sigma: f64 = 3.2;
-    let bound: f64 = sigma * 6.0;
 
     let mut ct_rgsw_rhs: GGSWCiphertext<Vec<u8>, FFT64> = GGSWCiphertext::new(&module, log_base2k, log_k_rgsw_rhs, rows, rank);
     let mut ct_rgsw_lhs: GGSWCiphertext<Vec<u8>, FFT64> = GGSWCiphertext::new(&module, log_base2k, log_k_rgsw_lhs, rows, rank);
@@ -506,7 +494,6 @@ fn external_product_inplace() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -517,7 +504,6 @@ fn external_product_inplace() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
diff --git a/core/src/test_fft64/glwe.rs b/core/src/test_fft64/glwe.rs
index 5ffe2dd..8e97eff 100644
--- a/core/src/test_fft64/glwe.rs
+++ b/core/src/test_fft64/glwe.rs
@@ -1,6 +1,6 @@
 use base2k::{
     Decoding, Encoding, FFT64, FillUniform, Module, ScalarZnx, ScalarZnxAlloc, ScratchOwned, Stats, VecZnxOps, VecZnxToMut,
-    ZnxView, ZnxViewMut, ZnxZero,
+    ZnxViewMut, ZnxZero,
 };
 use itertools::izip;
 use sampling::source::Source;
@@ -33,7 +33,6 @@ fn encrypt_sk_rank_3() {
 
 fn encrypt_sk(log_n: usize, basek: usize, k_ct: usize, k_pt: usize, sigma: f64, rank: usize) {
     let module: Module<FFT64> = Module::<FFT64>::new(1 << log_n);
-    let bound: f64 = sigma * 6.0;
 
     let mut ct: GLWECiphertext<Vec<u8>> = GLWECiphertext::new(&module, basek, k_ct, rank);
     let mut pt: GLWEPlaintext<Vec<u8>> = GLWEPlaintext::new(&module, basek, k_pt);
@@ -68,7 +67,6 @@ fn encrypt_sk(log_n: usize, basek: usize, k_ct: usize, k_pt: usize, sigma: f64,
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -102,7 +100,6 @@ fn encrypt_zero_sk() {
     let rank: usize = 1;
 
     let sigma: f64 = 3.2;
-    let bound: f64 = sigma * 6.0;
 
     let mut pt: GLWEPlaintext<Vec<u8>> = GLWEPlaintext::new(&module, basek, k_ct);
 
@@ -128,7 +125,6 @@ fn encrypt_zero_sk() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
     ct_dft.decrypt(&module, &mut pt, &sk_dft, scratch.borrow());
@@ -145,7 +141,6 @@ fn encrypt_pk() {
     let rank: usize = 1;
 
     let sigma: f64 = 3.2;
-    let bound: f64 = sigma * 6.0;
 
     let mut ct: GLWECiphertext<Vec<u8>> = GLWECiphertext::new(&module, basek, k_ct, rank);
     let mut pt_want: GLWEPlaintext<Vec<u8>> = GLWEPlaintext::new(&module, basek, k_ct);
@@ -161,14 +156,7 @@ fn encrypt_pk() {
     sk_dft.dft(&module, &sk);
 
     let mut pk: GLWEPublicKey<Vec<u8>, FFT64> = GLWEPublicKey::new(&module, basek, log_k_pk, rank);
-    pk.generate(
-        &module,
-        &sk_dft,
-        &mut source_xa,
-        &mut source_xe,
-        sigma,
-        bound,
-    );
+    pk.generate(&module, &sk_dft, &mut source_xa, &mut source_xe, sigma);
 
     let mut scratch: ScratchOwned = ScratchOwned::new(
         GLWECiphertext::encrypt_sk_scratch_space(&module, rank, ct.size())
@@ -191,7 +179,6 @@ fn encrypt_pk() {
         &mut source_xu,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -215,7 +202,6 @@ fn keyswitch() {
     let rank: usize = 1;
 
     let sigma: f64 = 3.2;
-    let bound: f64 = sigma * 6.0;
 
     let mut ct_grlwe: GLWESwitchingKey<Vec<u8>, FFT64> = GLWESwitchingKey::new(&module, basek, log_k_grlwe, rows, rank, rank);
     let mut ct_rlwe_in: GLWECiphertext<Vec<u8>> = GLWECiphertext::new(&module, basek, log_k_rlwe_in, rank);
@@ -263,7 +249,6 @@ fn keyswitch() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -274,7 +259,6 @@ fn keyswitch() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -315,7 +299,6 @@ fn keyswich_inplace() {
     let rank: usize = 1;
 
     let sigma: f64 = 3.2;
-    let bound: f64 = sigma * 6.0;
 
     let mut ct_grlwe: GLWESwitchingKey<Vec<u8>, FFT64> = GLWESwitchingKey::new(&module, basek, log_k_grlwe, rows, rank, rank);
     let mut ct_rlwe: GLWECiphertext<Vec<u8>> = GLWECiphertext::new(&module, basek, log_k_rlwe, rank);
@@ -357,7 +340,6 @@ fn keyswich_inplace() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -368,7 +350,6 @@ fn keyswich_inplace() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -410,7 +391,6 @@ fn external_product() {
     let rank: usize = 1;
 
     let sigma: f64 = 3.2;
-    let bound: f64 = sigma * 6.0;
 
     let mut ct_rgsw: GGSWCiphertext<Vec<u8>, FFT64> = GGSWCiphertext::new(&module, basek, log_k_grlwe, rows, rank);
     let mut ct_rlwe_in: GLWECiphertext<Vec<u8>> = GLWECiphertext::new(&module, basek, log_k_rlwe_in, rank);
@@ -459,7 +439,6 @@ fn external_product() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -470,7 +449,6 @@ fn external_product() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -523,7 +501,6 @@ fn external_product_inplace() {
     let rank: usize = 1;
 
     let sigma: f64 = 3.2;
-    let bound: f64 = sigma * 6.0;
 
     let mut ct_rgsw: GGSWCiphertext<Vec<u8>, FFT64> = GGSWCiphertext::new(&module, basek, log_k_grlwe, rows, rank);
     let mut ct_rlwe: GLWECiphertext<Vec<u8>> = GLWECiphertext::new(&module, basek, log_k_rlwe_in, rank);
@@ -566,7 +543,6 @@ fn external_product_inplace() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -577,7 +553,6 @@ fn external_product_inplace() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
diff --git a/core/src/test_fft64/glwe_fourier.rs b/core/src/test_fft64/glwe_fourier.rs
index 661a1e5..16f9eca 100644
--- a/core/src/test_fft64/glwe_fourier.rs
+++ b/core/src/test_fft64/glwe_fourier.rs
@@ -23,7 +23,6 @@ fn keyswitch() {
     let rank: usize = 1;
 
     let sigma: f64 = 3.2;
-    let bound: f64 = sigma * 6.0;
 
     let mut ct_grlwe: GLWESwitchingKey<Vec<u8>, FFT64> =
         GLWESwitchingKey::new(&module, log_base2k, log_k_grlwe, rows, rank, rank);
@@ -76,7 +75,6 @@ fn keyswitch() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -87,7 +85,6 @@ fn keyswitch() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -130,7 +127,6 @@ fn keyswich_inplace() {
     let rank: usize = 1;
 
     let sigma: f64 = 3.2;
-    let bound: f64 = sigma * 6.0;
 
     let mut ct_grlwe: GLWESwitchingKey<Vec<u8>, FFT64> =
         GLWESwitchingKey::new(&module, log_base2k, log_k_grlwe, rows, rank, rank);
@@ -175,7 +171,6 @@ fn keyswich_inplace() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -186,7 +181,6 @@ fn keyswich_inplace() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -230,7 +224,6 @@ fn external_product() {
     let rank: usize = 1;
 
     let sigma: f64 = 3.2;
-    let bound: f64 = sigma * 6.0;
 
     let mut ct_rgsw: GGSWCiphertext<Vec<u8>, FFT64> = GGSWCiphertext::new(&module, log_base2k, log_k_grlwe, rows, rank);
     let mut ct_rlwe_in: GLWECiphertext<Vec<u8>> = GLWECiphertext::new(&module, log_base2k, log_k_rlwe_in, rank);
@@ -283,7 +276,6 @@ fn external_product() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -294,7 +286,6 @@ fn external_product() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -349,7 +340,6 @@ fn external_product_inplace() {
     let rank: usize = 1;
 
     let sigma: f64 = 3.2;
-    let bound: f64 = sigma * 6.0;
 
     let mut ct_rgsw: GGSWCiphertext<Vec<u8>, FFT64> = GGSWCiphertext::new(&module, log_base2k, log_k_grlwe, rows, rank);
     let mut ct_rlwe: GLWECiphertext<Vec<u8>> = GLWECiphertext::new(&module, log_base2k, log_k_rlwe_in, rank);
@@ -394,7 +384,6 @@ fn external_product_inplace() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );
 
@@ -405,7 +394,6 @@ fn external_product_inplace() {
         &mut source_xa,
         &mut source_xe,
         sigma,
-        bound,
         scratch.borrow(),
     );