@ssports_fe/ssutils/times.js

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/**
 * @file 解决浮动运算问题，避免小数点后产生多位数和计算精度损失。
 * 问题示例：2.3 + 2.4 = 4.699999999999999，1.0 - 0.9 = 0.09999999999999998
 * @date 2018-03-01
 * @author sunshaocheng
 */

/**
 * 精确乘法
 */
const times = (num1, num2) => {
    const num1Changed = Number(num1.toString().replace('.', ''));
    const num2Changed = Number(num2.toString().replace('.', ''));
    const baseNum = digitLength(num1) + digitLength(num2);
    return num1Changed * num2Changed / Math.pow(10, baseNum);
};

module.exports = times;