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bp-math

v2.0.0

Published

基于 decimal.js 封装的轻量高精度数学工具库

Downloads

271

Readme

bp-math

基于 decimal.js 的轻量高精度数学工具库,适合金额、Token 数量和大数场景。

安装

pnpm add bp-math

使用

import { bpAdd, bpDiv, bpFixed, bpFormat, bpSub } from 'bp-math';

bpAdd('0.1', '0.2'); // '0.3'
bpSub('7,199,254,740,993', '7,199,254,740,992'); // '1'
bpDiv('1', '8'); // '0.125'
bpFixed('1.235', 2); // '1.24'
bpFormat('1000000000000000000', 2, 18); // '1.00'

计算

  • bpAdd / bpSub / bpMul / bpDiv:高精度加减乘除。
  • 字符串输入支持标准千分位格式(如 '1,234.56');number 输入请写成 1234.56
  • bpLt / bpLte / bpGt / bpGte:高精度比较。
  • 最后一个参数可传 { deci, fillZero };bpSub 还支持 { pos: true } 把负数限制为 0。
  • deci 为负数时向下截取,绝对值表示小数位数。

格式化

  • bpFixed / bpFloor / bpCeil:四舍五入、向下和向上取位。
  • bpFormat:将最小单位整数按指定精度转为小数字符串。
  • toThousands:添加千分位分隔符。
  • simpleZero:缩写小数部分连续的前导零。
  • bpEmpty:检查普通值或嵌套数据中是否存在空值。

开发

pnpm install
pnpm dev       # Vitest 监听模式
pnpm test      # 单次运行测试
pnpm check     # 格式、Lint、类型、测试和构建全量检查

发布产物位于 build/,同时提供 ESM、CommonJS 和 TypeScript 类型声明。