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hongfangze-calc

v1.0.0

Published

comm.calc

Readme

数学(科学)计算辅助类

介绍

一些计算操作(加减乘除),防止自带的javascript运算(银行家算法)导致精度异常

开始使用

npm install hongfangze-calc

// import { add } from "hongfangze-calc";
// import * as hfzarray from "hongfangze-calc";

/**
 * 加
 * @param {Number} a 被加数
 * @param {Number} b 加数
 * @param {Number} digits 保留位数(数学四舍五入,非银行家)
 * @returns {Number} 和
 */
export declare const add: (a: number, b: number, digits: number) => number;
/**
 * 减
 * @param {Number} a 被减数
 * @param {Number} b 减数
 * @param {Number} digits 保留位数(数学四舍五入,非银行家)
 * @returns {Number} 差
 */
export declare const subtract: (a: number, b: number, digits: number) => number;
/**
 * 乘
 * @param {Number} a 被乘数
 * @param {Number} b 乘数
 * @param {Number} digits 保留位数(数学四舍五入,非银行家)
 * @returns {Number} 积
 */
export declare const multiply: (a: number, b: number, digits: number) => number;
/**
 * 除
 * @param {Number} a 被除数
 * @param {Number} b 除数
 * @param {Number} digits 保留位数(数学四舍五入,非银行家)
 * @returns {Number} 商
 */
export declare const divide: (a: number, b: number, digits: number) => number;
/**
 * 四舍五入,非银行家算法
 * JavaScript默认的toFixed银行家算法:四舍六入五考虑,五后非0 就进一,五后为0看奇偶,五前为偶当舍去,五后为奇要进一
 * @param {number} num 要四舍五入的数字
 * @param {number} [digit=2] 保留的小数位数,默认2
 * @return {string} 四舍五入后的数字
 */
export declare const toFixed2: (num: number, digit?: number) => string;

版本迭代记录

2025-04-07 v1.0.0

  • 被移除后更名发布。