https://github.com/stdlib-js/number-float32-base-to-int32
Convert a single-precision floating-point number to a signed 32-bit integer.
https://github.com/stdlib-js/number-float32-base-to-int32
base cast convert float float32 int32 integer javascript node node-js nodejs real single stdlib type types util utilities utility utils
Last synced: about 2 months ago
JSON representation
Convert a single-precision floating-point number to a signed 32-bit integer.
- Host: GitHub
- URL: https://github.com/stdlib-js/number-float32-base-to-int32
- Owner: stdlib-js
- License: apache-2.0
- Created: 2021-06-07T16:51:11.000Z (about 4 years ago)
- Default Branch: main
- Last Pushed: 2025-03-10T02:03:48.000Z (3 months ago)
- Last Synced: 2025-03-27T01:46:41.532Z (2 months ago)
- Topics: base, cast, convert, float, float32, int32, integer, javascript, node, node-js, nodejs, real, single, stdlib, type, types, util, utilities, utility, utils
- Language: JavaScript
- Homepage: https://github.com/stdlib-js/stdlib
- Size: 394 KB
- Stars: 2
- Watchers: 4
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- Contributing: CONTRIBUTING.md
- License: LICENSE
- Code of conduct: CODE_OF_CONDUCT.md
- Citation: CITATION.cff
- Security: SECURITY.md
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README
About stdlib...
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# toInt32
[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url]
> Convert a [single-precision floating-point number][ieee754] to a signed 32-bit integer.
## Installation
```bash
npm install @stdlib/number-float32-base-to-int32
```
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 float32ToInt32 = require( '@stdlib/number-float32-base-to-int32' );
```
#### float32ToInt32( x )
Converts a [single-precision floating-point number][ieee754] to a signed 32-bit integer.
```javascript
var float64ToFloat32 = require( '@stdlib/number-float64-base-to-float32' );
var y = float32ToInt32( float64ToFloat32( 4294967295.0 ) );
// returns 0
y = float32ToInt32( float64ToFloat32( 3.14 ) );
// returns 3
y = float32ToInt32( float64ToFloat32( -3.14 ) );
// returns -3
y = float32ToInt32( float64ToFloat32( NaN ) );
// returns 0
y = float32ToInt32( float64ToFloat32( Infinity ) );
// returns 0
y = float32ToInt32( float64ToFloat32( -Infinity ) );
// returns 0
```
## Examples
```javascript
var randu = require( '@stdlib/random-base-randu' );
var round = require( '@stdlib/math-base-special-round' );
var MAX_INT = require( '@stdlib/constants-uint32-max' );
var float64ToFloat32 = require( '@stdlib/number-float64-base-to-float32' );
var float32ToInt32 = require( '@stdlib/number-float32-base-to-int32' );
var int32;
var f32;
var i;
for ( i = 0; i < 500; i++ ) {
// Generate a random single-precision floating-point integer:
f32 = float64ToFloat32( round( randu()*MAX_INT ) );
// Convert the single-precision floating-point integer to a signed integer:
int32 = float32ToInt32( f32 );
console.log( 'float32: %d => int32: %d', f32, int32 );
}
```
* * *
## See Also
- [`@stdlib/number-float32/base/to-uint32`][@stdlib/number/float32/base/to-uint32]: convert a single-precision floating-point number to an unsigned 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 © 2016-2025. The Stdlib [Authors][stdlib-authors].
[npm-image]: http://img.shields.io/npm/v/@stdlib/number-float32-base-to-int32.svg
[npm-url]: https://npmjs.org/package/@stdlib/number-float32-base-to-int32
[test-image]: https://github.com/stdlib-js/number-float32-base-to-int32/actions/workflows/test.yml/badge.svg?branch=main
[test-url]: https://github.com/stdlib-js/number-float32-base-to-int32/actions/workflows/test.yml?query=branch:main
[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/number-float32-base-to-int32/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/number-float32-base-to-int32?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/number-float32-base-to-int32/tree/deno
[deno-readme]: https://github.com/stdlib-js/number-float32-base-to-int32/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/number-float32-base-to-int32/tree/umd
[umd-readme]: https://github.com/stdlib-js/number-float32-base-to-int32/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/number-float32-base-to-int32/tree/esm
[esm-readme]: https://github.com/stdlib-js/number-float32-base-to-int32/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/number-float32-base-to-int32/blob/main/branches.md
[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/number-float32-base-to-int32/main/LICENSE
[ieee754]: https://en.wikipedia.org/wiki/IEEE_754-1985
[@stdlib/number/float32/base/to-uint32]: https://github.com/stdlib-js/number-float32-base-to-uint32