@stdlib/math-base-assert-is-nan
Advanced tools
Test if a double-precision floating-point numeric value is NaN.
@stdlib/math-base-assert-is-nan is a utility package that provides a function to check if a value is NaN (Not-a-Number). This is useful in various mathematical and data validation contexts where you need to ensure that the values you're working with are valid numbers.
Check if a value is NaN
This feature allows you to check if a given value is NaN. The function returns true if the value is NaN and false otherwise.
const isNaN = require('@stdlib/math-base-assert-is-nan');
console.log(isNaN(NaN)); // true
console.log(isNaN(5)); // false
console.log(isNaN('hello')); // falseThe 'is-nan' package provides a similar functionality to check if a value is NaN. It is a lightweight package that offers a straightforward way to determine if a value is NaN. Compared to @stdlib/math-base-assert-is-nan, it offers a more minimalistic approach without additional utilities.
Lodash is a popular utility library that includes a function _.isNaN to check if a value is NaN. While Lodash provides a broader range of utilities beyond just checking for NaN, it is a larger library and may be overkill if you only need the NaN-checking functionality.
The 'number-is-nan' package is a ponyfill for Number.isNaN, which is a more reliable way to check for NaN values compared to the global isNaN function. It is a small and focused package, similar to @stdlib/math-base-assert-is-nan, but specifically designed to replicate the behavior of Number.isNaN.
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Test if a double-precision floating-point numeric value is NaN.
npm install @stdlib/math-base-assert-is-nan
var isnan = require( '@stdlib/math-base-assert-is-nan' );
Tests if a double-precision floating-point numeric value is NaN.
var bool = isnan( NaN );
// returns true
var isnan = require( '@stdlib/math-base-assert-is-nan' );
var bool = isnan( NaN );
// returns true
bool = isnan( 5.0 );
// returns false
@stdlib/math-base/assert/is-nanf: test if a single-precision floating-point numeric value is NaN.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.
See LICENSE.
Copyright © 2016-2023. The Stdlib Authors.
0.1.0 (2023-09-22)
<section class="features">58832ee - update minimum TypeScript version58832ee: update minimum TypeScript version to 4.1
58832ee - feat: update minimum TypeScript version (by Philipp Burckhardt)b734544 - refactor: use strictEqual checks (by Philipp Burckhardt)28e1c84 - docs: resolve C lint errors (by Athan Reines)A total of 2 people contributed to this release. Thank you to the following contributors:
FAQs
Test if a double-precision floating-point numeric value is NaN.
The npm package @stdlib/math-base-assert-is-nan receives a total of 0 weekly downloads. As such, @stdlib/math-base-assert-is-nan popularity was classified as not popular.
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