src/test_run.ts

import { RingLwe } from './lib/lattice.js';

const lwe = new RingLwe(256, 3329, 2.0, true);
let p = new Int32Array(256);
p[1] = 1;
p[2] = 2;

const p_orig = new Int32Array(p);

// @ts-ignore
lwe.ntt(p);
// @ts-ignore
lwe.intt(p);

for (let i = 0; i < 256; i++) {
    let expected = p_orig[i];
    let actual = p[i];
    if (expected !== actual) {
        console.log(`FAIL at ${i}: expected ${expected}, got ${actual}`);
    }
}
console.log("NTT roundtrip check finished");

let a = new Int32Array(256);
let b = new Int32Array(256);
a[1] = 1; // x
b[1] = 1; // x

// @ts-ignore
lwe.ntt(a);
// @ts-ignore
lwe.ntt(b);

// @ts-ignore
let c = lwe.polyMul(a, b);
// @ts-ignore
lwe.intt(c);

console.log("x * x = ", c[0], c[1], c[2], c[3]);