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# Euler's Number

> The mathematical constant [_e_][e].

<section class="usage">

## Usage

```javascript
var e = require( '@stdlib/constants/float64/e' );
```

#### e

The mathematical constant [_e_][e], also known as Euler's number or Napier's constant. [_e_][e] is the base of the natural logarithm.

```javascript
var bool = ( e === 2.718281828459045 );
// returns true
```

</section>

<!-- /.usage -->

<section class="examples">

## Examples

<!-- TODO: better example -->

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

```javascript
var e = require( '@stdlib/constants/float64/e' );

console.log( e );
// => 2.718281828459045
```

</section>

<!-- /.examples -->

<section class="links">

[e]: https://en.wikipedia.org/wiki/E_%28mathematical_constant%29

</section>

<!-- /.links -->