Useful mathematical methods

Math-between.js

/**
 * The Math.between() function returns only numbers between the smallest and largest number
 * @example
 * // returns 2
 * Math.between(2, 1, 3);
 * @example
 * //returns 3
 * Math.between(4, 1, 3);
 * @example
 * //returns 1
 * Math.between(0, 1, 3);
 * @param {Number} num - Number to be calculated
 * @param {Number} min - The smallest number to be returned
 * @param {Number} max - The largest number to be returned
 * @returns {Number} Filtered number
 */
Math.between = function (num, min, max) {
	return Math.min(Math.max(num, min), max);
};

Math-percentage.js

/**
 * Calculates the percentage of a number compared to another
 * @example
 * // returns 50
 * Math.percentage(2, 4);
 * @example
 * //returns 28.5714
 * Math.percentage(2,7,4);
 * @param {Number} num - Number to be compared
 * @param {Number} total - Total number
 * @param {Number} decimal - Number of decimal places
 * @returns {Number} Calculated percentage
 */
Math.percentage = function(num, total, decimal) {
	return parseFloat(((num  * 100) / total).toFixed(decimal || 2));
};