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olamide203 / hyoka Public

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a lightweight and precise math expression parser and evaluator for
JavaScript and TypeScript

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MIT license
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olamide203 docs: fix typo in documentation
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docs: fix typo in documentation
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hyoka Features Installation Usage

README.md

 hyoka

Version License: MIT GitHub release (latest by date) Build Status

hyoka is a simple math expression parser and evaluator for JavaScript
and TypeScript. it uses decimal.js to ensure precision of floating
point calculations.

 Features

  * Supports implicit multiplication and parenthesis grouping
  * Binary and unary operators are supported
  * Supports mathematical functions
  * Precision and rounding mode can be configured

 Installation

This library can be used in both node.js and in the browser.

Using npm:

npm install hyoka

Using yarn:

yarn add hyoka

in the browser:

  * UMD

<script src="https://cdn.jsdelivr.net/npm/hyoka@latest/dist/umd/hyoka.js"></script>

  * ESM

<script src="https://cdn.jsdelivr.net/npm/hyoka@latest/dist/esm/hyoka.mjs" type="module"></script>

 Usage

import {Expression} from 'hyoka';

new Expression('0.1 + 0.2').evaluate(); // 0.3
new Expression('2 * 6 / 3').evaluate(); // 4

// using unary prefix operators
new Expression('- 1 + 2').evaluate(); // 1
new Expression('+ 1 - - 2').evaluate(); // 3

// implicit multiplication
new Expression('2(6 / 3)').evaluate(); // 4

//Trig Functions
new Expression('sin(p)').evaluate(); // 0
new Expression('cos(pi / 2)').evaluate(); // -0.5

// Even more complex expressions
new Expression('2(4(6 / 3 + 2) + 2^3 / - 2(2.5!))').evaluate(); //5.413192236417259652

About

a lightweight and precise math expression parser and evaluator for
JavaScript and TypeScript

Topics

parser math expression evaluator

Resources

Readme

License

MIT license

Stars

5 stars

Watchers

1 watching

Forks

0 forks

Releases 8

 
v1.0.6 Latest
Aug 26, 2022
+ 7 releases

Packages 0

No packages published

Languages

  * TypeScript 99.0%
  * Shell 1.0%

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