rational.js
v1.0.3
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rational number library
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rational.js
rational number library
Installation
## for cli
npm install --global rational.js
## for library usage
npm install rational.js
Functions
- rational :: f -> a/b where f is floating number, a,b are integers
- number :: rational -> number
- add
- minus
- multiply
- divide
- pow
Command Line Usage
> rational 3.14
157/50
Typescript Signatures
Core functions:
type rational = [number, number]
let MAX_ERROR: number // 1e-12
// convert floating point number into rational
function rational(f: number, maxError?: number): rational
// convert rational into floating point number
function number(x: rational): number
function normalize(x: rational): rational
// find the greatest common divisor
function gcd(a: number, b: number): number
Math functions:
function add(x: rational, y: rational): rational
function minus(x: rational, y: rational): rational
function multiply(x: rational, y: rational): rational
function divide(x: rational, y: rational): rational
function pow(x: rational, y: rational): rational
Format function:
// convert rational into string in "a/b" format
function toString(rational: rational): string
License
This project is licensed with BSD-2-Clause
This is free, libre, and open-source software. It comes down to four essential freedoms [ref]:
- The freedom to run the program as you wish, for any purpose
- The freedom to study how the program works, and change it so it does your computing as you wish
- The freedom to redistribute copies so you can help others
- The freedom to distribute copies of your modified versions to others