Polynomial evaluation example added.

examples/polynomial_evaluation.rs

@@ -0,0 +1,112 @@
+extern crate openfhe;
+use cxx::{CxxVector, SharedPtr};
+use openfhe::ffi as ffi;
+
+fn main()
+{
+    use std::time::Instant;
+    println!("\n======EXAMPLE FOR EVALPOLY========\n");
+
+    let mut _cc_params_ckksrns = ffi::GetParamsCKKSRNS();
+    _cc_params_ckksrns.pin_mut().SetMultiplicativeDepth(6);
+    _cc_params_ckksrns.pin_mut().SetScalingModSize(50);
+
+    let mut _cc = ffi::GenCryptoContextByParamsCKKSRNS(&_cc_params_ckksrns);
+    _cc.Enable(ffi::PKESchemeFeature::PKE);
+    _cc.Enable(ffi::PKESchemeFeature::KEYSWITCH);
+    _cc.Enable(ffi::PKESchemeFeature::LEVELEDSHE);
+    _cc.Enable(ffi::PKESchemeFeature::ADVANCEDSHE);
+
+    let mut _vals = CxxVector::<ffi::ComplexPair>::new();
+    _vals.pin_mut().push(ffi::ComplexPair{re: 0.5, im: 0.0});
+    _vals.pin_mut().push(ffi::ComplexPair{re: 0.7, im: 0.0});
+    _vals.pin_mut().push(ffi::ComplexPair{re: 0.9, im: 0.0});
+    _vals.pin_mut().push(ffi::ComplexPair{re: 0.95, im: 0.0});
+    _vals.pin_mut().push(ffi::ComplexPair{re: 0.93, im: 0.0});
+    let _input = ffi::GenVectorOfComplex(&_vals);
+    let _encoded_length = _input.len();
+
+    let mut _coefficients_1 = CxxVector::<f64>::new();
+    _coefficients_1.pin_mut().push(0.15);
+    _coefficients_1.pin_mut().push(0.75);
+    _coefficients_1.pin_mut().push(0.0);
+    _coefficients_1.pin_mut().push(1.25);
+    _coefficients_1.pin_mut().push(0.0);
+    _coefficients_1.pin_mut().push(0.0);
+    _coefficients_1.pin_mut().push(1.0);
+    _coefficients_1.pin_mut().push(0.0);
+    _coefficients_1.pin_mut().push(1.0);
+    _coefficients_1.pin_mut().push(2.0);
+    _coefficients_1.pin_mut().push(0.0);
+    _coefficients_1.pin_mut().push(1.0);
+    _coefficients_1.pin_mut().push(0.0);
+    _coefficients_1.pin_mut().push(0.0);
+    _coefficients_1.pin_mut().push(0.0);
+    _coefficients_1.pin_mut().push(0.0);
+    _coefficients_1.pin_mut().push(1.0);
+
+    let mut _coefficients_2 = CxxVector::<f64>::new();
+    _coefficients_2.pin_mut().push(1.0);
+    _coefficients_2.pin_mut().push(2.0);
+    _coefficients_2.pin_mut().push(3.0);
+    _coefficients_2.pin_mut().push(4.0);
+    _coefficients_2.pin_mut().push(5.0);
+    _coefficients_2.pin_mut().push(-1.0);
+    _coefficients_2.pin_mut().push(-2.0);
+    _coefficients_2.pin_mut().push(-3.0);
+    _coefficients_2.pin_mut().push(-4.0);
+    _coefficients_2.pin_mut().push(-5.0);
+    _coefficients_2.pin_mut().push(0.1);
+    _coefficients_2.pin_mut().push(0.2);
+    _coefficients_2.pin_mut().push(0.3);
+    _coefficients_2.pin_mut().push(0.4);
+    _coefficients_2.pin_mut().push(0.5);
+    _coefficients_2.pin_mut().push(-0.1);
+    _coefficients_2.pin_mut().push(-0.2);
+    _coefficients_2.pin_mut().push(-0.3);
+    _coefficients_2.pin_mut().push(-0.4);
+    _coefficients_2.pin_mut().push(-0.5);
+    _coefficients_2.pin_mut().push(0.1);
+    _coefficients_2.pin_mut().push(0.2);
+    _coefficients_2.pin_mut().push(0.3);
+    _coefficients_2.pin_mut().push(0.4);
+    _coefficients_2.pin_mut().push(0.5);
+    _coefficients_2.pin_mut().push(-0.1);
+    _coefficients_2.pin_mut().push(-0.2);
+    _coefficients_2.pin_mut().push(-0.3);
+    _coefficients_2.pin_mut().push(-0.4);
+    _coefficients_2.pin_mut().push(-0.5);
+
+    let mut _plain_text_1 = _cc.MakeCKKSPackedPlaintextByVectorOfComplex(&_input, 1, 0, SharedPtr::<ffi::DCRTPolyParams>::null(), 0);
+    let mut _key_pair = _cc.KeyGen();
+    print!("Generating evaluation key for homomorphic multiplication...");
+    _cc.EvalMultKeyGen(_key_pair.GetPrivateKey());
+    println!("Completed.\n");
+    let mut _cipher_text_1 = _cc.Encrypt(_key_pair.GetPublicKey(), _plain_text_1.GetPlainText());
+
+    let mut _start = Instant::now();
+    let mut _result = _cc.EvalPoly(_cipher_text_1.GetCipherText(), &_coefficients_1);
+    let _time_eval_poly_1 = _start.elapsed();
+
+    _start = Instant::now();
+    let mut _result_2 = _cc.EvalPoly(_cipher_text_1.GetCipherText(), &_coefficients_2);
+    let _time_eval_poly_2 = _start.elapsed();
+
+    let mut _plain_text_dec = ffi::GenEmptyPlainText();
+    _cc.Decrypt(_key_pair.GetPrivateKey(), _result.GetCipherText(), _plain_text_dec.pin_mut());
+    _plain_text_dec.SetLength(_encoded_length);
+    let mut _plain_text_dec_2 = ffi::GenEmptyPlainText();
+    _cc.Decrypt(_key_pair.GetPrivateKey(), _result_2.GetCipherText(), _plain_text_dec_2.pin_mut());
+    _plain_text_dec_2.SetLength(_encoded_length);
+
+    println!("\n Original Plaintext #1:");
+    println!("{}", _plain_text_1.GetString());
+    println!("\n Result of evaluating a polynomial with coefficients [{} ]", _coefficients_1.iter().fold(String::new(), |acc, &arg| acc + " " + &arg.to_string()));
+    println!("{}", _plain_text_dec.GetString());
+    println!("\n Expected result: (0.70519107, 1.38285078, 3.97211180, 5.60215665, 4.86357575)");
+    println!("\n Evaluation time: {:.0?}", _time_eval_poly_1);
+    println!("\n Result of evaluating a polynomial with coefficients [{} ]", _coefficients_2.iter().fold(String::new(), |acc, &arg| acc + " " + &arg.to_string()));
+    println!("{}\n", _plain_text_dec_2.GetString());
+    println!(" Expected result: (3.4515092326, 5.3752765397, 4.8993108833, 3.2495023573, 4.0485229982)");
+    print!("\n Evaluation time: {:.0?}\n", _time_eval_poly_2);
+}

src/lib.rs

@@ -5,7 +5,7 @@
 use cxx::{CxxVector, SharedPtr, let_cxx_string};
 
 #[cxx::bridge(namespace = "openfhe")]
-mod ffi
+pub mod ffi
 {
     #[repr(i32)]
     enum SCHEME