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konpeito

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"konpeito" is a library to "compute". :)

What

Features

This library has 4 functions.

Has the following features.

Please check the console and main.mjs.

Install for node.js

  1. This library can be installed using npm.

    npm install konpeito
    
  2. Then you can include it in your code:

    var konpeito = require("konpeito");
    

If you want to use in the ES6 module, please execute with the following command.

node --experimental-modules main.mjs

Install for browser

  1. Download the zip by GitHub.

  2. Please use mjs file when using ES6 modules. And use js file when using UMD.

  3. ./build/konpeito.esm.min.js
  4. ./build/konpeito.umd.min.js

with ES6 module.

<script type="module" src="./main.mjs" charset="utf-8"></script>

with UMD

<script src="./konpeito.umd.min.js" charset="utf-8"></script>
<script src="./main.js" charset="utf-8"></script>

Repository

Sample

BigInteger

const konpeito = require("konpeito");
const BigInteger = konpeito.BigInteger;
const $ = BigInteger.create;

console.log($("-1234567890").mul("987654321098765432109876543210").toString());
> -1219326311248285321124828532111263526900

console.log($("7").pow("50").toString());
> 1798465042647412146620280340569649349251249

BigDecimal

const konpeito = require("konpeito");
const BigDecimal = konpeito.BigDecimal;
const MathContext = konpeito.MathContext;
const $ = BigDecimal.create;

BigDecimal.setDefaultContext(MathContext.UNLIMITED);
console.log($("-123456.7890").mul("987654321098765.432109876543210").toString());
> -121932631124828532112.4828532111263526900

Fraction

const konpeito = require("konpeito");
const Fraction = konpeito.Fraction;
const $ = Fraction.create;

console.log($("1/3").add("0.(3)").mul(10).toString());
> 20 / 3

Matrix

const konpeito = require("konpeito");
const Matrix = konpeito.Matrix;
const $ = Matrix.create;

console.log($("[1 2;3 4;5 6]").toString());
>
 1  2
 3  4
 5  6
const USV = $("[1 2;3 4;5 6]").svd();
console.log(USV.U.toString());
> 
 0.2298 -0.8835  0.4082
 0.5247 -0.2408 -0.8165
 0.8196  0.4019  0.4082
console.log(USV.S.toString());
> 
 9.5255  0.0000
 0.0000  0.5143
 0.0000  0.0000
console.log(USV.V.toString());
> 
 0.7849  0.6196
-0.6196  0.7849
console.log(USV.U.mul(USV.S).mul(USV.V.T()).toString());
> 
 1.0000  2.0000
 3.0000  4.0000
 5.0000  6.0000

console.log($("[1+j 2-3j -3 -4]").fft().toString());
> -4.0000 - 2.0000i  1.0000 - 5.0000i  0.0000 + 4.0000i  7.0000 + 7.0000i

console.log($("[1 2 30]").dct().toString());
> 19.0526 -20.5061  11.0227