double-double/test/basic/two-diff.spec.spec.ts

Pure double-double precision functions *with strict error bounds*.

import { expect } from 'chai';
import { describe } from 'mocha';

import { twoDiff } from '../../src/index.js';


describe('twoDiff', function() {
    it('should subtract two doubles without any error', 
    function() {
        let a = 0.1;
        let b = -0.2;
        expect(twoDiff(a,b)).to.eql([
            -2.7755575615628914e-17,
            0.30000000000000004
        ]);
    });
});