rabbit-ear/module/general/number.js

origami design library

/* Rabbit Ear 0.9.4 alpha 2024-04-20 (c) Kraft, GNU GPLv3 License */

const countPlaces = function (num) {
	const m = (`${num}`).match(/(?:\.(\d+))?(?:[eE]([+-]?\d+))?$/);
	return Math.max(0, (m[1] ? m[1].length : 0) - (m[2] ? +m[2] : 0));
};
const cleanNumber = function (number, places = 15) {
	const num = typeof number === "number" ? number : parseFloat(number);
	if (Number.isNaN(num)) { return number; }
	const crop = parseFloat(num.toFixed(places));
	if (countPlaces(crop) === Math.min(places, countPlaces(num))) {
		return num;
	}
	return crop;
};

export { cleanNumber };