@stdlib/assert-is-integer

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isInteger

Test if a value is a number having an integer value.

Installation

npm install @stdlib/assert-is-integer

Usage

var isInteger = require( '@stdlib/assert-is-integer' );

isInteger( value )

Tests if a value is a number having an integer value.

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

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

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

bool = isInteger( -3.14 );
// returns false

bool = isInteger( null );
// returns false

isInteger.isPrimitive( value )

Tests if a value is a primitive number having an integer value.

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

var bool = isInteger.isPrimitive( -3.0 );
// returns true

bool = isInteger.isPrimitive( new Number( -3.0 ) );
// returns false

isInteger.isObject( value )

Tests if a value is a Number object having an integer value.

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

var bool = isInteger.isObject( 3.0 );
// returns false

bool = isInteger.isObject( new Number( 3.0 ) );
// returns true

Examples

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

var bool = isInteger( -5.0 );
// returns true

bool = isInteger( 0.0 );
// returns true

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

bool = isInteger( 5.256 );
// returns false

bool = isInteger( 1.0/0.0 );
// returns false

bool = isInteger( -1.0/0.0 );
// returns false

bool = isInteger( '5' );
// returns false

bool = isInteger( null );
// returns false

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See Also

• @stdlib/assert-is-number: test if a value is a number.

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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

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License

See LICENSE.

Copyright

Copyright © 2016-2024. The Stdlib Authors.

Changelog

0.2.2 (2024-07-27)

<section class="bug-fixes">

Bug Fixes

• b77ddf7 - replace use of type guards with boolean return type

</section> <!-- /.bug-fixes --> <section class="commits">

Commits

<details>

• b77ddf7 - fix: replace use of type guards with boolean return type (by Philipp Burckhardt)

</details> </section> <!-- /.commits --> <section class="contributors">

Contributors

A total of 1 person contributed to this release. Thank you to this contributor:

• Philipp Burckhardt

</section> <!-- /.contributors --> </section> <!-- /.release --> <section class="release" id="v0.2.1">