is-fibonacci

Test if a number is a fibonacci number

Reference: Recognizing Fibonacci numbers

Install

$ npm install --save is-fibonacci

Usage

var isFibo = require('is-fibonacci');
 
isFibo(1);
//=> true
 
isFibo(2);
//=> true
 
isFibo(8);
//=> true
 
isFibo(3441);
//=> false

License

MIT © Leonardo Borges Avelino