# E_DBL

> The mathematical constant e also known as Euler's number. Approximately 2.72. This is a f64/double precision constant.

## Definition

* **Type:** Field
* **Namespace:** [Unity.Mathematics](/engine/6000.7/script-reference/unity/mathematics.md)
* **Assembly:** UnityEngine.MathematicsModule

```csharp
public const double E_DBL = 2.718281828459045
```