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# Glaisher-Kinkelin Constant

> [Glaisher-Kinkelin][glaisher-constant] constant.

<section class="intro">

[Glaisher-Kinkelin][glaisher-constant] constant is defined as

<!-- <equation class="equation" label="eq:glaisher_kinkelin_constant" align="center" raw="A = \lim_{n\to\infty} \frac{K(n + 1)}{n^{n^2/2 + n/2 + 1/12}e^{-n^2/4}}" alt="Glaisher-Kinkelin constant"> -->

<div class="equation" align="center" data-raw-text="A = \lim_{n\to\infty} \frac{K(n + 1)}{n^{n^2/2 + n/2 + 1/12}e^{-n^2/4}}" data-equation="eq:glaisher_kinkelin_constant">
    <img src="https://cdn.jsdelivr.net/gh/stdlib-js/stdlib@5d87cc7cb2c58aeb732872f89562d2c89571cc8a/lib/node_modules/@stdlib/constants/float64/glaisher-kinkelin/docs/img/equation_glaisher_kinkelin_constant.svg" alt="Glaisher-Kinkelin constant">
    <br>
</div>

<!-- </equation> -->

where

<!-- <equation class="equation" label="eq:k_function" align="center" raw="K(n) = \prod_{k=1}^{n-1} k^k" alt="K-function"> -->

<div class="equation" align="center" data-raw-text="K(n) = \prod_{k=1}^{n-1} k^k" data-equation="eq:k_function">
    <img src="https://cdn.jsdelivr.net/gh/stdlib-js/stdlib@5d87cc7cb2c58aeb732872f89562d2c89571cc8a/lib/node_modules/@stdlib/constants/float64/glaisher-kinkelin/docs/img/equation_k_function.svg" alt="K-function">
    <br>
</div>

<!-- </equation> -->

is the [K-function][k-function].

</section>

<!-- /.intro -->

<section class="usage">

## Usage

```javascript
var A = require( '@stdlib/constants/float64/glaisher-kinkelin' );
```

#### A

The [Glaisher-Kinkelin][glaisher-constant] constant.

```javascript
var bool = ( A === 1.2824271291006226 );
// returns true
```

</section>

<!-- /.usage -->

<section class="examples">

## Examples

<!-- TODO: better example -->

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

```javascript
var A = require( '@stdlib/constants/float64/glaisher-kinkelin' );

console.log( 'Glaisher\'s constant: %d', A );
// => 'Glaisher\'s constant: 1.2824271291006226'
```

</section>

<!-- /.examples -->

<section class="links">

[glaisher-constant]: https://en.wikipedia.org/wiki/Glaisher%E2%80%93Kinkelin_constant

[k-function]: https://en.wikipedia.org/wiki/K-function

</section>

<!-- /.links -->