Mnjs
MATH NODE JS (MNJS): A tiny math library for node.js & JavaScript on browser
Install / Use
/learn @dr-montasir/MnjsREADME
mnjs
MATH NODE JS (MNJS): A tiny math library for node.js & JavaScript on browser
Installation
npm install mnjs
yarn add mnjs
<script src="https://cdn.jsdelivr.net/npm/mnjs/index.js"></script>
Some of the solutions provided by the mnjs library
// JavaScript
0.1 + 0.2 = 0.30000000000000004 // 0.1 + 0.2 === 0.3 returns false
0.2 + 0.7 = 0.8999999999999999 // 0.2 + 0.7 === 0.9 returns false
0.7 - 0.2 = 0.49999999999999994 // 0.7 - 0.2 === 0.5 returns false
0.1 * 0.2 = 0.020000000000000004 // 0.1 * 0.2 === 0.02 returns false
0.3 / 0.1 = 2.9999999999999996 // 0.3 / 0.1 === 3 returns false
1.2 % 0.5 = 0.19999999999999996 // 1.2 / 0.5 === 0.2 returns false
// MNJS library
mnjs.add(0.1, 0.2) = 0.3 // mnjs.add(0.1, 0.2) === 0.3 returns true
mnjs.add(0.2, 0.7) = 0.9 // mnjs.add(0.2, 0.7) === 0.9 returns true
mnjs.subt(0.7, 0.2) = 0.5 // mnjs.subt(0.7, 0.2) === 0.5 returns true
mnjs.mult(0.1, 0.2) = 0.02 // mnjs.mult(0.1, 0.2) === 0.02 returns true
mnjs.divi(0.3, 0.1) = 3 // mnjs.divi(0.3, 0.1) === 3 returns true
mnjs.rem(1.2, 0.5) = 0.2 // mnjs.rem(1.2, 0.5) === 0.2 returns true
<!-- html -->
<!DOCTYPE html>
<html>
<head>
<title>mnjs</title>
<!--<script src="https://cdn.jsdelivr.net/npm/mnjs@4.4.0/index.js"></script>-->
<script src="https://cdn.jsdelivr.net/npm/mnjs/index.min.js"></script>
<!-- This link is the latest mini version ☝ -->
</head>
<body>
<script>
let myNumber = 0.1;
const myCube = mnjs.cube(myNumber);
// mnjs.cube(0.1) returns 0.001
console.log(`(${myNumber})^3 returns ${myCube} in mnjs library`);
// Math.pow(0.1, 3) or (0.1 * 0.1 * 0.1) returns 0.0010000000000000002
console.log(`(${myNumber})^3 returns ${Math.pow(myNumber, 3)} in JavaScript`);
</script>
</body>
</html>
// Next JS
// index.js
// npm install mnjs --save
import mnjs from 'mnjs';
import React from 'react';
const Home = () => {
const price = 4.5 / 3;
return (
<div>
<ul>
<li>{mnjs.add([1,8], 1).[1]}</li>
<li>{mnjs.fix(1, 2)}</li>
<li>{mnjs.fix(mnjs.phi,2)}</li>
<li>{mnjs.stn('8.00')}</li>
<li>{mnjs.zeros(2,2)}</li>
<li>{mnjs.zeros(2.1,2)}</li>
<li>{mnjs.zeros(2.1440000000,2)}</li>
<li>{mnjs.zeros(2.1440000000,5)}</li>
<li>${mnjs.zeros(price,2)}</li>
<li>
<a
className="App-link"
href="https://www.npmjs.com/package/mnjs"
target="_blank"
rel="noopener noreferrer"
>
Learn MNJS (Math Node JS)
</a>
</li>
</ul>
</div>
);
};
export default Home;
// React JS
// App.js
// npm install mnjs --save
import { divi, zeros, stn, nts } from 'mnjs';
import logo from './logo.svg';
import './App.css';
function App() {
const price = divi(4.2, 3);
const priceWithFormat = zeros(price, 2);
return (
<div className="App">
<header className="App-header">
<img src={logo} className="App-logo" alt="logo" />
<p>
Edit <code>src/App.js</code> and save to reload.
</p>
<a className="App-link" href="https://reactjs.org" target="_blank" rel="noopener noreferrer">
Learn React
</a>
<br />
<a className="App-link" href="https://www.npmjs.com/package/mnjs" target="_blank" rel="noopener noreferrer">
Learn MNJS (Math Node JS)
</a>
<h2>
<p>${nts(0.0)}</p>
Free ${zeros(stn('0.00'), 2)} <strike>${priceWithFormat}</strike>
</h2>
<small>Type: {typeof priceWithFormat}</small>
</header>
</div>
);
}
export default App;
// Node JS
// index.js
// npm install mnjs --save
// import mnjs from 'mnjs';
// console.log(mnjs.sin.deg(mnjs.range(0, 90, 30)));
// Or
import { sin, range } from 'mnjs';
console.log(sin.deg(range(0, 90, 30)));
Examples
Use
console.log()to output the result.console.log(mnjs.abs(-3.6)); // 3.6
const mnjs = require(`mnjs`);
mnjs.abs(-3.6); // 3.6
mnjs.subt(2, 5); // -3
mnjs.sqr(2) + mnjs.sqrt(4); // 6
mnjs.sqr(4) + mnjs.sqrt(4) / mnjs.pi; // 16.63661977236758
mnjs.e; // 2.718281828459045
mnjs.exp(1); // 2.718281828459045
mnjs.exp(-1); // 0.367879441171442
mnjs.exp(mnjs.pi / 3); // 2.849653908226361
mnjs.log(10); // 2.302585092994046
mnjs.ln2; // 0.693147180559945
mnjs.ln10; // 2.302585092994046
mnjs.log2e; // 1.442695040888963
mnjs.log10e; // 0.434294481903252
mnjs.log1p(5); // 1.791759469228055
mnjs.log(mnjs.e); // 1
mnjs.hypot(4); // 4
mnjs.hypot([4]); // 4
mnjs.hypot(3, 4); // 5
mnjs.hypot([3, 4]); // 5
mnjs.hypot(4, 2, 4); // 6
mnjs.hypot([4, 2, 4]); // 6
mnjs.hypot([-3, -4]); // 5
mnjs.hypot(-3, -4); // 5
mnjs.hypot([-4]); // 4
mnjs.hypot(-4); // 4
mnjs.sqrt(mnjs.add(mnjs.sqr(6), mnjs.sqr(8))) === mnjs.hypot(6, 8); // true
mnjs.hypot([-3, -4], 1); // Error: MNJS ERROR No. 01 : 05
mnjs.hypot([-3, -4], [1]); // Error: MNJS ERROR No. 01 : 05
mnjs.hypot([-3, -4, '1']); // Error: MNJS ERROR No. 01 : 05
mnjs.fix(2.718281828459045, 2); // 2.72
mnjs.inv(10); // 0.1
mnjs.ceil(1.1); // 2
mnjs.ceil(-1.1); // -1
mnjs.ceil([-0.2, 0, 0.2]); // [-0, 0, 1]
mnjs.max(1, 10, 3, -2); // 10
mnjs.max([1, 10, 3, -2]); // 10
mnjs.max(1, 10, 3, ''); // Error: MNJS ERROR No. 01 : 05
mnjs.min(5, 1, -3.2, 0.5, 3); // -3.2
mnjs.min([5, 1, -3.2, 0.5, 3]); // -3.2
mnjs.min(); // Error: MNJS ERROR No. 01 : 05
mnjs.min([]); // Error: MNJS ERROR No. 01 : 05: This function accepts numeric arguments or one numeric array argument. (num1, num2, ..., num) => {} or ([num1, num2, ..., num]) => {}
mnjs.pow(2, 4); // 16
mnjs.pow(2, -2.5); // 0.176776695296637
mnjs.cbrt(8); // 2
mnjs.nrt(0.0001, 4); // 0.1
mnjs.nrt(Infinity, Infinity); // 1
mnjs.nrt(Infinity, Infinity) === mnjs.pow(Infinity, 1 / Infinity); // true
mnjs.tau; // 6.283185307179586
mnjs.sin(1); // 0.841470984807897
mnjs.sin.rad(1); // 0.841470984807897
mnjs.sin(1) === mnjs.sin.rad(1); // true
mnjs.dtr(30); // 0.523598775598299
mnjs.sin.deg(30); // 0.5
mnjs.sin.deg(30) === mnjs.sin(mnjs.dtr(30)); // true
mnjs.cos.deg(60); // 0.5
mnjs.cos(0); // 1
mnjs.cos.rad(0); // 1
mnjs.cos(1) === mnjs.cos.rad(1); // true
mnjs.tan.deg(45); // 1
mnjs.tan(0.5); // 0.54630248984379
mnjs.tan(0.5) === mnjs.tan.rad(0.5); // true
mnjs.tan.deg(90); // -Infinity
1 / mnjs.sin.deg(30); // 2
mnjs.csc.deg(30)(
// 2
1 / mnjs.cos.deg(60)
) === mnjs.sec.deg(60); // true
console.log(mnjs.sec.deg(60))(
// 2
1 / mnjs.tan.deg(45)
) === mnjs.cot.deg(45); // true
mnjs.cot.deg(45); // 1
mnjs.cot.deg(0); // Infinity
mnjs.acsc(mnjs.csc(0.67)); // 0.67
mnjs.asec.rad(1) === mnjs.asec(1); // true
mnjs.stn('123'); // 123
mnjs.nts(123); // "123"
/***** Matrices *****/
mnjs.range(1, 10, 1); // [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ]
mnjs.range(1, 10); // [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ]
mnjs.range(10, 1, 1); // [ 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 ]
mnjs.range(10, 1); // [ 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 ]
mnjs.range(1, 5, 0.5); // [ 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5 ]
mnjs.range(1, 0, 0.2); // [ 1, 0.8, 0.6, 0.4, 0.2, 0 ]
mnjs.range(10, 1, 2); // [ 10, 8, 6, 4, 2 ]
mnjs.range(-20, 1, 0); // Error: MNJS ERROR No. 02 : 01: The step parameter should not be:
// 1/ null
// 2/ equal or less than zero.
// 3/ greater than the absolute difference between the first and second parameter
mnjs.monolist(1, 5); // [ 1, 1, 1, 1, 1 ]
mnjs.monolist(0.5, 3); // [ 0.5, 0.5, 0.5 ]
mnjs.monolist(0, 5); // [ 0, 0, 0, 0, 0 ]
mnjs.monolist(-0.5, 3); // [ -0.5, -0.5, -0.5 ]
mnjs.monolist(-1, 5); // [ -1, -1, -1, -1, -1 ]
mnjs.monolist(5, 1.1); // RangeError: Invalid array length
// Most of the MNJS functions return a number or an array of numbers
const myArray = mnjs.range(0, 90, 30);
const errArray = [0, 30, '60', 90];
myArray; // [ 0, 30, 60, 90 ]
errArray; // [ 0, 30, '60', 90 ]
mnjs.cube(myArray); // [ 0, 27000, 216000, 729000 ]
mnjs.sin.deg(myArray[1]); // 0.5
mnjs.sin.deg(myArray); // [ 0, 0.5, 0.866025403784439, 1 ]
mnjs.abs(errArray); // Error: MNJS ERROR No. 01: This function accepting either a number or an array.
// In the case of an array, all of its elements must be numbers.
mnjs.dtr(myArray); // [ 0, 0.523598775598299, 1.047197551196598, 1.570796326794897 ]
// Note the result may change in some functions depending on the position of the arguments
mnjs.add(2, 2); // 4
mnjs.add([0, 2], [4, 8]); // [ 4, 10 ]
mnjs.add([4, 8], [0, 2]); // [ 4, 10 ]
mnjs.add(2, [1, 2]); // [ 3, 4 ]
mnjs.add([1, 2], 2); // [ 3, 4 ]
mnjs.subt(2, [1, 2]); // [ 1, 0 ]
mnjs.subt([1, 2], 2); // [ -1, 0 ]
mnjs.subt([0, 2], [4, 8]); // [ -4, -6 ]
mnjs.subt([4, 8], [0, 2]); // [ 4, 6 ]
mnjs.mult(2, [1, 2]); // [ 2, 4 ]
mnjs.mult([1, 2], 2); // [ 2,
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