phaser/src/math/fuzzy/Equal.js

A fast, free and fun HTML5 Game Framework for Desktop and Mobile web browsers from the team at Phaser Studio Inc.

/**
 * @author       Richard Davey <rich@phaser.io>
 * @copyright    2013-2025 Phaser Studio Inc.
 * @license      {@link https://opensource.org/licenses/MIT|MIT License}
 */

/**
 * Check whether the given values are fuzzily equal.
 *
 * Two numbers are fuzzily equal if their difference is less than `epsilon`.
 *
 * @function Phaser.Math.Fuzzy.Equal
 * @since 3.0.0
 *
 * @param {number} a - The first value.
 * @param {number} b - The second value.
 * @param {number} [epsilon=0.0001] - The epsilon.
 *
 * @return {boolean} `true` if the values are fuzzily equal, otherwise `false`.
 */
var Equal = function (a, b, epsilon)
{
    if (epsilon === undefined) { epsilon = 0.0001; }

    return Math.abs(a - b) < epsilon;
};

module.exports = Equal;