---
title: math.POS_INFINITY
summary: null
url: >-
  https://www.fastly.com/documentation/reference/vcl/variables/math-constants-limits/math-pos-infinity
---

**Type:** FLOAT  
**Access:** read-only, constant

**Available in:** all subroutines

A value representing positive infinity (+∞). When converted to a STRING value, 
this is rendered as `inf`.

## Floating Point Classifications

| Name                | Value   |
| :------------------ | :------ |
| `math.is_finite`    | `false` |
| `math.is_infinite`  | `true`  |
| `math.is_nan`       | `false` |
| `math.is_normal`    | `false` |
| `math.is_subnormal` | `false` |

See the documentation on the `FLOAT` type for details on these classifications.