npm package: @stdlib/number-float16-base-to-binary-string
Description: Return a string giving the literal bit representation of a 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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</details>

# toBinaryString

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

> Return a string giving the literal bit representation of a [half-precision floating-point number][ieee754].

<section class="installation">

## Installation

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

</section>

<section class="usage">

## Usage

```javascript
var toBinaryString = require( '@stdlib/number-float16-base-to-binary-string' );
```

#### toBinaryString( x )

Returns a string giving the literal bit representation of a [half-precision floating-point number][ieee754].

```javascript
var toFloat16 = require( '@stdlib/number-float64-base-to-float16' );

var str = toBinaryString( toFloat16( 4.0 ) );
// returns '0100010000000000'

str = toBinaryString( toFloat16( 3.1415926 ) );
// returns '0100001001001000'

str = toBinaryString( toFloat16( -1.0e3 ) );
// returns '1110001111010000'
```

The function handles [subnormals][subnormals].

```javascript
var toFloat16 = require( '@stdlib/number-float64-base-to-float16' );

var str = toBinaryString( toFloat16( -3.14e-6 ) );
// returns '1000000000110101'

str = toBinaryString( toFloat16( 1.4e-7 ) );
// returns '0000000000000010'
```

The function handles special values.

```javascript
var PINF = require( '@stdlib/constants-float16-pinf' );
var NINF = require( '@stdlib/constants-float16-ninf' );

var str = toBinaryString( 0.0 );
// returns '0000000000000000'

str = toBinaryString( -0.0 );
// returns '1000000000000000'

str = toBinaryString( NaN );
// returns '0111111000000000'

str = toBinaryString( PINF );
// returns '0111110000000000'

str = toBinaryString( NINF );
// returns '1111110000000000'
```

</section>

<!-- /.usage -->

<section class="examples">

## Examples

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

```javascript
var randu = require( '@stdlib/random-base-randu' );
var round = require( '@stdlib/math-base-special-round' );
var pow = require( '@stdlib/math-base-special-pow' );
var float64ToFloat16 = require( '@stdlib/number-float64-base-to-float16' );
var toBinaryString = require( '@stdlib/number-float16-base-to-binary-string' );

var frac;
var sign;
var exp;
var b;
var x;
var i;

// Convert random numbers to literal bit representations...
for ( i = 0; i < 100; i++ ) {
    if ( randu() < 0.5 ) {
        sign = -1.0;
    } else {
        sign = 1.0;
    }
    frac = randu() * 10.0;
    exp = round( randu()*10.0 );
    if ( randu() < 0.5 ) {
        exp = -exp;
    }
    x = sign * frac * pow( 2.0, exp );
    x = float64ToFloat16( x );
    b = toBinaryString( x );
    console.log( b );
}
```

</section>

<!-- /.examples -->

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</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-float16-base-to-binary-string/main/LICENSE

[ieee754]: https://en.wikipedia.org/wiki/IEEE_754-2008

[subnormals]: https://en.wikipedia.org/wiki/Denormal_number

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</section>

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