@stdlib/assert-is-prime NPM

isPrime

Test if a value is a prime number.

A prime number is defined as an integer value greater than 1 which is only divisible by 1 and itself.

Installation

npm install @stdlib/assert-is-prime

Usage

var isPrime = require( '@stdlib/assert-is-prime' );

isPrime( value )

Tests if a value is a prime number.

var Number = require( '@stdlib/number-ctor' );

var bool = isPrime( 5.0 );
// returns true

bool = isPrime( new Number( 5.0 ) );
// returns true

bool = isPrime( 3.14 );
// returns false

bool = isPrime( -5.0 );
// returns false

bool = isPrime( NaN );
// returns false

bool = isPrime( null );
// returns false

isPrime.isPrimitive( value )

Tests if a value is a primitive prime number.

var Number = require( '@stdlib/number-ctor' );

var bool = isPrime.isPrimitive( 5.0 );
// returns true

bool = isPrime.isPrimitive( new Number( 5.0 ) );
// returns false

isPrime.isObject( value )

Tests if a value is a Number object having a value which is a prime number.

var Number = require( '@stdlib/number-ctor' );

var bool = isPrime.isObject( 5.0 );
// returns false

bool = isPrime.isObject( new Number( 5.0 ) );
// returns true

Examples

var Number = require( '@stdlib/number-ctor' );
var isPrime = require( '@stdlib/assert-is-prime' );

var bool = isPrime( 5.0 );
// returns true

bool = isPrime( new Number( 5.0 ) );
// returns true

bool = isPrime( 11.0 );
// returns true

bool = isPrime( 2.0 );
// returns true

bool = isPrime( 3.14 );
// returns false

bool = isPrime( -5.0 );
// returns false

bool = isPrime( NaN );
// returns false

bool = isPrime( '0.5' );
// returns false

bool = isPrime( null );
// returns false

Notice

This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.