isComposite

Test if a value is a composite number.

A composite number is defined as a positive integer value greater than 1 which has at least one divisor other than 1 and itself (i.e., an integer value which can be formed by multiplying two smaller positive integers).

Installation

npm install @stdlib/assert-is-composite

Usage

var isComposite = require( '@stdlib/assert-is-composite' );

isComposite( value )

Tests if a value is a composite number.

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

var bool = isComposite( 4.0 );
// returns true

bool = isComposite( new Number( 4.0 ) );
// returns true

bool = isComposite( 3.14 );
// returns false

bool = isComposite( -4.0 );
// returns false

bool = isComposite( NaN );
// returns false

bool = isComposite( null );
// returns false

isComposite.isPrimitive( value )

Tests if a value is a primitive composite number.

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

var bool = isComposite.isPrimitive( 4.0 );
// returns true

bool = isComposite.isPrimitive( new Number( 4.0 ) );
// returns false

isComposite.isObject( value )

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

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

var bool = isComposite.isObject( 4.0 );
// returns false

bool = isComposite.isObject( new Number( 4.0 ) );
// returns true

Examples

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

var bool = isComposite( 4.0 );
// returns true

bool = isComposite( new Number( 4.0 ) );
// returns true

bool = isComposite( 10.0 );
// returns true

bool = isComposite( 7.0 );
// returns false

bool = isComposite( 3.14 );
// returns false

bool = isComposite( -4.0 );
// returns false

bool = isComposite( NaN );
// returns false

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

bool = isComposite( null );
// returns false

See Also

• @stdlib/assert-is-integer: test if a value is a number having an integer value.
• @stdlib/assert-is-number: test if a value is a number.
• @stdlib/assert-is-prime: test if a value is a prime number.

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.

Community

License

See LICENSE.

Copyright

Copyright © 2016-2024. The Stdlib Authors.