haw-utils/lib/math/times.js

一个基于业务场景的工具方法库

(function (global, factory) {
  if (typeof define === "function" && define.amd) {
    define(["exports", "../utils/math.util"], factory);
  } else if (typeof exports !== "undefined") {
    factory(exports, require("../utils/math.util"));
  } else {
    var mod = {
      exports: {}
    };
    factory(mod.exports, global.utilsMathUtil);
    global.times = mod.exports;
  }
})(typeof globalThis !== "undefined" ? globalThis : typeof self !== "undefined" ? self : this, function (_exports, _math) {
  "use strict";

  Object.defineProperty(_exports, "__esModule", {
    value: true
  });
  _exports["default"] = void 0;
  /**
   * 精确乘法，支持多个数相乘
   * 
   * @static
   * @alias module:Math.times
   * @since 3.1.0
   * @param {Number} num1 相乘的第一个数
   * @param {Number} num2 相乘的第二个数
   * @param {Number} [others] 相乘的其余数
   * @returns {Number} 乘积
   * @example
   * 
   *  times(3, 0.6);
   *  // => 1.8
   * 
   *  times(3, 0.6, 2);
   *  // => 3.6
   * 
   *  times(3, 0.6, 2, 10);
   *  // => 36
   */
  function times(num1, num2) {
    for (var _len = arguments.length, others = new Array(_len > 2 ? _len - 2 : 0), _key = 2; _key < _len; _key++) {
      others[_key - 2] = arguments[_key];
    }
    if (others.length > 0) {
      return times.apply(void 0, [times(num1, num2)].concat(others));
    }
    var num1Changed = (0, _math.float2Fixed)(num1);
    var num2Changed = (0, _math.float2Fixed)(num2);
    var baseNum = (0, _math.digitLength)(num1) + (0, _math.digitLength)(num2);
    var leftValue = num1Changed * num2Changed;
    (0, _math.checkBoundary)(leftValue);
    return leftValue / Math.pow(10, baseNum);
  }
  var _default = times;
  _exports["default"] = _default;
});