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use crate::ciphertext::RadixCiphertext;
use crate::ServerKey;
impl ServerKey {
/// Homomorphically computes the opposite of a ciphertext encrypting an integer message.
///
/// The result is returned as a new ciphertext.
///
/// # Example
///
/// ```rust
/// use concrete_integer::gen_keys_radix;
/// use concrete_shortint::parameters::PARAM_MESSAGE_2_CARRY_2;
///
/// // We have 4 * 2 = 8 bits of message
/// let size = 4;
/// let (cks, sks) = gen_keys_radix(&PARAM_MESSAGE_2_CARRY_2, size);
///
/// let msg = 1;
///
/// // Encrypt two messages:
/// let mut ctxt = cks.encrypt(msg);
///
/// // Compute homomorphically a negation
/// let ct_res = sks.smart_neg_parallelized(&mut ctxt);
///
/// // Decrypt
/// let dec = cks.decrypt(&ct_res);
/// assert_eq!(255, dec);
/// ```
pub fn smart_neg_parallelized(&self, ctxt: &mut RadixCiphertext) -> RadixCiphertext {
if !self.is_neg_possible(ctxt) {
self.full_propagate_parallelized(ctxt);
}
self.unchecked_neg(ctxt)
}
}