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https://github.com/stdlib-js/math-base-special-fast

Standard library fast math special functions.
https://github.com/stdlib-js/math-base-special-fast

fast fastmath javascript lib library math mathematics node node-js nodejs standard stdlib

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Standard library fast math special functions.

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README

        


About stdlib...

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# Special Functions

[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url]

> Fast math special functions.

## Installation

```bash
npm install @stdlib/math-base-special-fast
```

Alternatively,

- To load the package in a website via a `script` tag without installation and bundlers, use the [ES Module][es-module] available on the [`esm`][esm-url] branch (see [README][esm-readme]).
- If you are using Deno, visit the [`deno`][deno-url] branch (see [README][deno-readme] for usage intructions).
- For use in Observable, or in browser/node environments, use the [Universal Module Definition (UMD)][umd] build available on the [`umd`][umd-url] branch (see [README][umd-readme]).

The [branches.md][branches-url] file summarizes the available branches and displays a diagram illustrating their relationships.

To view installation and usage instructions specific to each branch build, be sure to explicitly navigate to the respective README files on each branch, as linked to above.

## Usage

```javascript
var fmath = require( '@stdlib/math-base-special-fast' );
```

#### fmath

Namespace containing "fast" math special functions.

```javascript
var fcns = fmath;
// returns {...}
```

- [`abs( x )`][@stdlib/math/base/special/fast/abs]: compute an absolute value.
- [`acosh( x )`][@stdlib/math/base/special/fast/acosh]: compute the hyperbolic arccosine of a number.
- [`ampbm( x, y )`][@stdlib/math/base/special/fast/alpha-max-plus-beta-min]: compute the hypotenuse using the alpha max plus beta min algorithm.
- [`asinh( x )`][@stdlib/math/base/special/fast/asinh]: compute the hyperbolic arcsine of a number.
- [`atanh( x )`][@stdlib/math/base/special/fast/atanh]: compute the hyperbolic arctangent of a number.
- [`hypot( x, y )`][@stdlib/math/base/special/fast/hypot]: compute the hypotenuse.
- [`max( x, y )`][@stdlib/math/base/special/fast/max]: return the maximum value.
- [`min( x, y )`][@stdlib/math/base/special/fast/min]: return the minimum value.
- [`powint( base, exponent )`][@stdlib/math/base/special/fast/pow-int]: exponential function.
- [`log2Uint32( x )`][@stdlib/math/base/special/fast/uint32-log2]: compute an integer binary logarithm.
- [`sqrtUint32( x )`][@stdlib/math/base/special/fast/uint32-sqrt]: compute an integer square root.

## Notes

- Implementations **may** violate strict IEEE semantics.
- Implementations **may** assume arguments and results are **not** `NaN`.
- Implementations **may** assume arguments are **neither** positive or negative `infinity`.
- Implementations **may** ignore the sign of zero.

## Examples

```javascript
var objectKeys = require( '@stdlib/utils-keys' );
var fmath = require( '@stdlib/math-base-special-fast' );

console.log( objectKeys( fmath ) );
```

* * *

## Notice

This package is part of [stdlib][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][stdlib], see the main project [repository][stdlib].

#### Community

[![Chat][chat-image]][chat-url]

---

## License

See [LICENSE][stdlib-license].

## Copyright

Copyright © 2016-2024. The Stdlib [Authors][stdlib-authors].

[npm-image]: http://img.shields.io/npm/v/@stdlib/math-base-special-fast.svg
[npm-url]: https://npmjs.org/package/@stdlib/math-base-special-fast

[test-image]: https://github.com/stdlib-js/math-base-special-fast/actions/workflows/test.yml/badge.svg?branch=main
[test-url]: https://github.com/stdlib-js/math-base-special-fast/actions/workflows/test.yml?query=branch:main

[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/math-base-special-fast/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/math-base-special-fast?branch=main

[chat-image]: https://img.shields.io/gitter/room/stdlib-js/stdlib.svg
[chat-url]: https://app.gitter.im/#/room/#stdlib-js_stdlib:gitter.im

[stdlib]: https://github.com/stdlib-js/stdlib

[stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors

[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules

[deno-url]: https://github.com/stdlib-js/math-base-special-fast/tree/deno
[deno-readme]: https://github.com/stdlib-js/math-base-special-fast/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/math-base-special-fast/tree/umd
[umd-readme]: https://github.com/stdlib-js/math-base-special-fast/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/math-base-special-fast/tree/esm
[esm-readme]: https://github.com/stdlib-js/math-base-special-fast/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/math-base-special-fast/blob/main/branches.md

[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/math-base-special-fast/main/LICENSE

[@stdlib/math/base/special/fast/abs]: https://github.com/stdlib-js/math-base-special-fast-abs

[@stdlib/math/base/special/fast/acosh]: https://github.com/stdlib-js/math-base-special-fast-acosh

[@stdlib/math/base/special/fast/alpha-max-plus-beta-min]: https://github.com/stdlib-js/math-base-special-fast-alpha-max-plus-beta-min

[@stdlib/math/base/special/fast/asinh]: https://github.com/stdlib-js/math-base-special-fast-asinh

[@stdlib/math/base/special/fast/atanh]: https://github.com/stdlib-js/math-base-special-fast-atanh

[@stdlib/math/base/special/fast/hypot]: https://github.com/stdlib-js/math-base-special-fast-hypot

[@stdlib/math/base/special/fast/max]: https://github.com/stdlib-js/math-base-special-fast-max

[@stdlib/math/base/special/fast/min]: https://github.com/stdlib-js/math-base-special-fast-min

[@stdlib/math/base/special/fast/pow-int]: https://github.com/stdlib-js/math-base-special-fast-pow-int

[@stdlib/math/base/special/fast/uint32-log2]: https://github.com/stdlib-js/math-base-special-fast-uint32-log2

[@stdlib/math/base/special/fast/uint32-sqrt]: https://github.com/stdlib-js/math-base-special-fast-uint32-sqrt