wcfsetup/install/files/js/WoltLabSuite/Core/NumberUtil.js

   1 /**
   2  * Provides helper functions for Number handling.
   3  *
   4  * @author  Tim Duesterhus
   5  * @copyright  2001-2022 WoltLab GmbH
   6  * @license  GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
   7  * @deprecated 6.0 All functionality in this module is deprecated.
   8  */
   9 define(["require", "exports"], function (require, exports) {
  10     "use strict";
  11     Object.defineProperty(exports, "__esModule", { value: true });
  12     exports.round = void 0;
  13     /**
  14      * @deprecated 6.0 Use `Number.toLocaleString()` or `Number.toFixed()` as appropriate.
  15      */
  16     function round(value, exp) {
  17         // If the exp is undefined or zero...
  18         if (typeof exp === "undefined" || +exp === 0) {
  19             return Math.round(value);
  20         }
  21         value = +value;
  22         exp = +exp;
  23         // If the value is not a number or the exp is not an integer...
  24         if (isNaN(value) || !(typeof exp === "number" && exp % 1 === 0)) {
  25             return NaN;
  26         }
  27         // Shift
  28         let tmp = value.toString().split("e");
  29         let exponent = tmp[1] ? +tmp[1] - exp : -exp;
  30         value = Math.round(+`${tmp[0]}e${exponent}`);
  31         // Shift back
  32         tmp = value.toString().split("e");
  33         exponent = tmp[1] ? +tmp[1] + exp : exp;
  34         return +`${tmp[0]}e${exponent}`;
  35     }
  36     exports.round = round;
  37 });