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use crate::backends::core::implementation::engines::CoreEngine;
use crate::backends::core::implementation::entities::{
LweCiphertext32, LweCiphertext64, Plaintext32, Plaintext64,
};
use crate::specification::engines::{
LweCiphertextPlaintextFusingAdditionEngine, LweCiphertextPlaintextFusingAdditionError,
};
/// # Description:
/// Implementation of [`LweCiphertextPlaintextFusingAdditionEngine`] for [`CoreEngine`] that
/// operates on 32 bits integers.
impl LweCiphertextPlaintextFusingAdditionEngine<LweCiphertext32, Plaintext32> for CoreEngine {
/// # Example:
/// ```
/// use concrete_commons::dispersion::Variance;
/// use concrete_commons::parameters::LweDimension;
/// use concrete_core::prelude::*;
/// # use std::error::Error;
///
/// # fn main() -> Result<(), Box<dyn Error>> {
/// // DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
/// let lwe_dimension = LweDimension(2);
/// // Here a hard-set encoding is applied (shift by 20 bits)
/// let input_1 = 3_u32 << 20;
/// let input_2 = 5_u32 << 20;
/// let noise = Variance(2_f64.powf(-25.));
///
/// let mut engine = CoreEngine::new()?;
/// let key: LweSecretKey32 = engine.create_lwe_secret_key(lwe_dimension)?;
/// let plaintext_1 = engine.create_plaintext(&input_1)?;
/// let plaintext_2 = engine.create_plaintext(&input_2)?;
/// let mut ciphertext = engine.encrypt_lwe_ciphertext(&key, &plaintext_1, noise)?;
///
/// engine.fuse_add_lwe_ciphertext_plaintext(&mut ciphertext, &plaintext_2)?;
/// #
/// assert_eq!(ciphertext.lwe_dimension(), lwe_dimension);
///
/// engine.destroy(key)?;
/// engine.destroy(plaintext_1)?;
/// engine.destroy(plaintext_2)?;
/// engine.destroy(ciphertext)?;
/// #
/// # Ok(())
/// # }
/// ```
fn fuse_add_lwe_ciphertext_plaintext(
&mut self,
output: &mut LweCiphertext32,
input: &Plaintext32,
) -> Result<(), LweCiphertextPlaintextFusingAdditionError<Self::EngineError>> {
unsafe { self.fuse_add_lwe_ciphertext_plaintext_unchecked(output, input) };
Ok(())
}
unsafe fn fuse_add_lwe_ciphertext_plaintext_unchecked(
&mut self,
output: &mut LweCiphertext32,
input: &Plaintext32,
) {
output.0.get_mut_body().0 += input.0 .0;
}
}
/// # Description:
/// Implementation of [`LweCiphertextPlaintextFusingAdditionEngine`] for [`CoreEngine`] that
/// operates on 64 bits integers.
impl LweCiphertextPlaintextFusingAdditionEngine<LweCiphertext64, Plaintext64> for CoreEngine {
/// # Example:
/// ```
/// use concrete_commons::dispersion::Variance;
/// use concrete_commons::parameters::LweDimension;
/// use concrete_core::prelude::*;
/// # use std::error::Error;
///
/// # fn main() -> Result<(), Box<dyn Error>> {
/// // DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
/// let lwe_dimension = LweDimension(2);
/// // Here a hard-set encoding is applied (shift by 40 bits)
/// let input_1 = 3_u64 << 40;
/// let input_2 = 5_u64 << 40;
/// let noise = Variance(2_f64.powf(-25.));
///
/// let mut engine = CoreEngine::new()?;
/// let key: LweSecretKey64 = engine.create_lwe_secret_key(lwe_dimension)?;
/// let plaintext_1 = engine.create_plaintext(&input_1)?;
/// let plaintext_2 = engine.create_plaintext(&input_2)?;
/// let mut ciphertext = engine.encrypt_lwe_ciphertext(&key, &plaintext_1, noise)?;
///
/// engine.fuse_add_lwe_ciphertext_plaintext(&mut ciphertext, &plaintext_2)?;
/// #
/// assert_eq!(ciphertext.lwe_dimension(), lwe_dimension);
///
/// engine.destroy(key)?;
/// engine.destroy(plaintext_1)?;
/// engine.destroy(plaintext_2)?;
/// engine.destroy(ciphertext)?;
/// #
/// # Ok(())
/// # }
/// ```
fn fuse_add_lwe_ciphertext_plaintext(
&mut self,
output: &mut LweCiphertext64,
input: &Plaintext64,
) -> Result<(), LweCiphertextPlaintextFusingAdditionError<Self::EngineError>> {
unsafe { self.fuse_add_lwe_ciphertext_plaintext_unchecked(output, input) };
Ok(())
}
unsafe fn fuse_add_lwe_ciphertext_plaintext_unchecked(
&mut self,
output: &mut LweCiphertext64,
input: &Plaintext64,
) {
output.0.get_mut_body().0 += input.0 .0;
}
}