@stdlib/math-base-special-absf
v0.2.3TypeScript
Compute the absolute value of a single-precision floating-point number.
0/weekUpdated 4 days agoApache-2.0Unpacked: 41.7 KB
Published by The Stdlib Authors
npm install @stdlib/math-base-special-absfWe believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js. The library is fully decomposable, being architected in such a way that you can swap out and mix and match APIs and functionality to cater to your exact preferences and use cases. When you use stdlib, you can be absolutely certain that you are using the most thorough, rigorous, well-written, studied, documented, tested, measured, and high-quality code out there. To join us in bringing numerical computing to the web, get started by checking us out on GitHub, and please consider financially supporting stdlib. We greatly appreciate your continued support!
About stdlib...
Absolute Value
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> Compute the [absolute value][absolute-value] of a single-precision floating-point number.
The [absolute value][absolute-value] is defined as
Installation
``bash`
npm install @stdlib/math-base-special-absf
Usage
`javascript`
var absf = require( '@stdlib/math-base-special-absf' );
#### absf( x )
Computes the [absolute value][absolute-value] of a single-precision floating-point number.
`javascript
var v = absf( -1.0 );
// returns 1.0
v = absf( 2.0 );
// returns 2.0
v = absf( 0.0 );
// returns 0.0
v = absf( -0.0 );
// returns 0.0
v = absf( NaN );
// returns NaN
`
Examples
`javascript
var discreteUniform = require( '@stdlib/random-array-discrete-uniform' );
var logEachMap = require( '@stdlib/console-log-each-map' );
var absf = require( '@stdlib/math-base-special-absf' );
var x = discreteUniform( 100, -50, 50, {
'dtype': 'float32'
});
logEachMap( 'absf(%d) = %d', x, absf );
`
*
C APIs
$3
`c`
#include "stdlib/math/base/special/absf.h"
#### stdlib_base_absf( x )
Computes the absolute value of a single-precision floating-point number.
`c`
float y = stdlib_base_absf( -5.0f );
// returns 5.0f
The function accepts the following arguments:
- x: [in] float input value.
`c`
float stdlib_base_absf( const float x );
$3
`c
#include "stdlib/math/base/special/absf.h"
#include
int main( void ) {
const float x[] = { 3.14f, -3.14f, 0.0f, 0.0f/0.0f };
float y;
int i;
for ( i = 0; i < 4; i++ ) {
y = stdlib_base_absf( x[ i ] );
printf( "|%f| = %f\n", x[ i ], y );
}
}
`
*
See Also
- [@stdlib/math-base/special/abs][@stdlib/math/base/special/abs]: compute the absolute value of a double-precision floating-point number.
- [@stdlib/math-base/special/abs2f][@stdlib/math/base/special/abs2f]: compute the squared absolute value of a single-precision floating-point number.
- [@stdlib/math-base/special/labs][@stdlib/math/base/special/labs]: compute an absolute value of a signed 32-bit integer.
*
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 © 2016-2026. The Stdlib [Authors][stdlib-authors].
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[npm-url]: https://npmjs.org/package/@stdlib/math-base-special-absf
[test-image]: https://github.com/stdlib-js/math-base-special-absf/actions/workflows/test.yml/badge.svg?branch=v0.2.3
[test-url]: https://github.com/stdlib-js/math-base-special-absf/actions/workflows/test.yml?query=branch:v0.2.3
[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/math-base-special-absf/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/math-base-special-absf?branch=main
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[chat-url]: https://stdlib.zulipchat.com
[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-absf/tree/deno
[deno-readme]: https://github.com/stdlib-js/math-base-special-absf/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/math-base-special-absf/tree/umd
[umd-readme]: https://github.com/stdlib-js/math-base-special-absf/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/math-base-special-absf/tree/esm
[esm-readme]: https://github.com/stdlib-js/math-base-special-absf/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/math-base-special-absf/blob/main/branches.md
[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/math-base-special-absf/main/LICENSE
[absolute-value]: https://en.wikipedia.org/wiki/Absolute_value
[@stdlib/math/base/special/abs]: https://www.npmjs.com/package/@stdlib/math-base-special-abs
[@stdlib/math/base/special/abs2f]: https://www.npmjs.com/package/@stdlib/math-base-special-abs2f
[@stdlib/math/base/special/labs]: https://www.npmjs.com/package/@stdlib/math-base-special-labs