# Glaisher-Kinkelin Constant
> [Glaisher-Kinkelin][glaisher-constant] constant.
[Glaisher-Kinkelin][glaisher-constant] constant is defined as
where
is the [K-function][k-function].
## 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
```
## Examples
```javascript
var A = require( '@stdlib/constants/float64/glaisher-kinkelin' );
console.log( 'Glaisher\'s constant: %d', A );
// => 'Glaisher\'s constant: 1.2824271291006226'
```
[glaisher-constant]: https://en.wikipedia.org/wiki/Glaisher%E2%80%93Kinkelin_constant
[k-function]: https://en.wikipedia.org/wiki/K-function
