npm package: @stdlib/number-float64-base-to-float32
Description: Convert a double-precision floating-point number to the nearest single-precision floating-point number.
Author: The Stdlib Authors
Latest version: 0.2.3

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<details>
  <summary>
    About stdlib...
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  <p>We 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.</p>
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</details>

# toFloat32

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

> Convert a [double-precision floating-point number][ieee754] to the nearest [single-precision floating-point number][ieee754].

<section class="installation">

## Installation

```bash
npm install @stdlib/number-float64-base-to-float32
```

</section>

<section class="usage">

## Usage

```javascript
var float64ToFloat32 = require( '@stdlib/number-float64-base-to-float32' );
```

#### float64ToFloat32( x )

Converts a [double-precision floating-point number][ieee754] to the nearest [single-precision floating-point number][ieee754].

```javascript
var y = float64ToFloat32( 1.337 );
// returns 1.3370000123977661
```

</section>

<!-- /.usage -->

<section class="notes">

## Notes

-   This function may be used as a polyfill for the ES2015 built-in [`Math.fround`][math-fround].

</section>

<!-- /.notes -->

<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
var randu = require( '@stdlib/random-base-randu' );
var float64ToFloat32 = require( '@stdlib/number-float64-base-to-float32' );

var f64;
var f32;
var i;

// Convert random double-precision floating-point numbers to the nearest single-precision floating-point number...
for ( i = 0; i < 1000; i++ ) {
    f64 = randu() * 100.0;
    f32 = float64ToFloat32( f64 );
    console.log( 'float64: %d => float32: %d', f64, f32 );
}
```

</section>

<!-- /.examples -->

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<section class="related">

</section>

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<section class="main-repo" >

* * *

## 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 &copy; 2016-2026. The Stdlib [Authors][stdlib-authors].

</section>

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

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[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-float64-base-to-float32/tree/deno
[deno-readme]: https://github.com/stdlib-js/number-float64-base-to-float32/blob/deno/README.md
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[esm-url]: https://github.com/stdlib-js/number-float64-base-to-float32/tree/esm
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[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/number-float64-base-to-float32/main/LICENSE

[ieee754]: https://en.wikipedia.org/wiki/IEEE_754-1985

[math-fround]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/fround

</section>

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