npm package: @stdlib/number-float32-base-to-float16
Description: Convert a single-precision floating-point number to the nearest half-precision floating-point number.
Author: The Stdlib Authors
Latest version: 0.1.1

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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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# toFloat16

[![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 [single-precision floating-point number][ieee754] to the nearest [half-precision floating-point number][half-precision-floating-point-format].

<section class="installation">

## Installation

```bash
npm install @stdlib/number-float32-base-to-float16
```

</section>

<section class="usage">

## Usage

```javascript
var float32ToFloat16 = require( '@stdlib/number-float32-base-to-float16' );
```

#### float32ToFloat16( x )

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

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

var y = float32ToFloat16( float64ToFloat32( 1.337 ) );
// returns 1.3369140625
```

</section>

<!-- /.usage -->

<section class="notes">

</section>

<!-- /.notes -->

<section class="examples">

## Examples

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

```javascript
var uniform = require( '@stdlib/random-array-uniform' );
var pickArguments = require( '@stdlib/utils-pick-arguments' );
var logEachMap = require( '@stdlib/console-log-each-map' );
var float32ToFloat16 = require( '@stdlib/number-float32-base-to-float16' );

// Generate an array of random numbers:
var f32 = uniform( 100, 0.0, 100.0, {
    'dtype': 'float32'
});

// Convert each single-precision floating-point number to the nearest half-precision floating-point number:
logEachMap( 'float32: %f => float16: %f', f32, pickArguments( float32ToFloat16, [ 1 ] ) );
```

</section>

<!-- /.examples -->

<!-- C interface documentation. -->

* * *

<section class="c">

## C APIs

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<section class="intro">

</section>

<!-- /.intro -->

<!-- C usage documentation. -->

<section class="usage">

### Usage

```c
#include "stdlib/number/float32/base/to_float16.h"
```

#### stdlib_base_float32_to_float16( x )

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

```c
#include "stdlib/number/float16/ctor.h"

stdlib_float16_t x = stdlib_base_float32_to_float16( 3.14f );
```

The function accepts the following arguments:

-   **x**: `[in] float` input value.

```c
stdlib_float16_t stdlib_base_float32_to_float16( const float x );
```

</section>

<!-- /.usage -->

<!-- C API usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->

<section class="notes">

</section>

<!-- /.notes -->

<!-- C API usage examples. -->

<section class="examples">

### Examples

```c
#include "stdlib/number/float32/base/to_float16.h"
#include "stdlib/number/float16/ctor.h"
#include <stdint.h>
#include <stdio.h>

int main( void ) {
    const float x[] = { 3.14f, -3.14f, 0.0f, 0.0f/0.0f };

    stdlib_float16_t v;
    int i;
    for ( i = 0; i < 4; i++ ) {
        v = stdlib_base_float32_to_float16( x[ i ] );
        printf( "%f => uint16: %d\n", x[ i ], stdlib_float16_to_bits( v ) );
    }
}
```

</section>

<!-- /.examples -->

</section>

<!-- /.c -->

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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-license]: https://raw.githubusercontent.com/stdlib-js/number-float32-base-to-float16/main/LICENSE

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

[half-precision-floating-point-format]: https://en.wikipedia.org/wiki/Half-precision_floating-point_format

</section>

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