index.js

"use strict";
var Prelude = require("Prelude");
var Math = require("Math");
var isEven = function (__copy__36) {
    var _36 = __copy__36;
    tco: while (true) {
        if (_36 === 0) {
            return false;
        };
        if (_36 === 1) {
            return false;
        };
        if (_36 === 2) {
            return true;
        };
        if (_36 < 0) {
            var __tco__36 = Math.abs(_36);
            _36 = __tco__36;
            continue tco;
        };
        var __tco__36 = _36 - 2;
        _36 = __tco__36;
        continue tco;
    };
};
module.exports = {
    isEven: isEven
};

isEven.purs

module Data.Experiments where

	import Math

	isEven :: Number -> Boolean
	isEven 0 = true
	isEven 1 = false
	isEven n | n < 0 = isEven(Math.abs(n))
	isEven n = isEven(n-2)