phaser/src/math/Bernstein.js

/**
 * @author       Richard Davey <rich@photonstorm.com>
 * @copyright    2019 Photon Storm Ltd.
 * @license      {@link https://opensource.org/licenses/MIT|MIT License}
 */

var Factorial = require('./Factorial');

/**
 * [description]
 *
 * @function Phaser.Math.Bernstein
 * @since 3.0.0
 *
 * @param {number} n - [description]
 * @param {number} i - [description]
 *
 * @return {number} [description]
 */
var Bernstein = function (n, i)
{
    return Factorial(n) / Factorial(i) / Factorial(n - i);
};

module.exports = Bernstein;