This project is part of the bigint-swissknife project. It aims to provide some missing utilities in the Math native class.

For example there is no Math.max for BigInt, this library provides a solution for that and other missing utilities.

Tired of reinventing the wheel every time I decided to create a library that provides the missing math utilities for BigInt.

The library allows to perform operations not just on bigint but also on everything that is BigIntable

export type BigIntable = bigint | number | string

You can find typedoc documentation here.

Add the library to your project:

npm install @vekexasia/bigint-math

or

yarn add @vekexasia/bigint-math

When using the library in a browser environment, you can also include it directly in your HTML file using the iife build or the umd. Both will expose the BigIntUint8Array global variable.

If you wish to use iife or umd even with your preferred builder, remember to import the library like so

import '@vekexasia/bigint-math/iife';
// or import '@vekexasia/bigint-math/umd'; 

You can find all the available methods in the typedoc documentation. But here a list of some of the most missing ones:

import {BigIntMath} from '@vekexasia/bigint-math';

BigIntMath.max(1n, 2n, 3n, 4n, 5n); // 5n
BigIntMath.min(1n, 2n, 3n, 4n, 5n); // 1n
BigIntMath.abs(-1n); // 1n
BigIntMath.ceilDivide(5n, 4n); // 2n (5/4 = 1.25 => 2)
BigIntMath.divide(5n, 4n); // 1n (5/4 = 1.25)
BigIntMath.roundDivide(5n, 4n); // 1n (5/4 = 1.25 => 1)
BigIntMath.rand(2000000000000000000n); // random bigint between 0n and 2000000000000000000n

The library is entirely written in TypeScript and comes with its own type definitions.

The rand method uses the crypto module to generate a random number. On browser it uses window.crypto and on node it uses crypto from the crypto module.

This project is licensed under the MIT License - see the LICENSE file for details.