---
title: Floating point classifications
summary: null
url: >-
  https://www.fastly.com/documentation/reference/vcl/functions/floating-point-classifications
---

Floating point values are grouped into one of several _classifications_.
See [VCL Types](https://www.fastly.com/documentation/reference/vcl/types/float/) for details
on the FLOAT type, and its classifications.

- [math.is_finite](https://www.fastly.com/documentation/reference/vcl/functions/floating-point-classifications/math-is-finite/)
- [math.is_infinite](https://www.fastly.com/documentation/reference/vcl/functions/floating-point-classifications/math-is-infinite/)
- [math.is_nan](https://www.fastly.com/documentation/reference/vcl/functions/floating-point-classifications/math-is-nan/)
- [math.is_normal](https://www.fastly.com/documentation/reference/vcl/functions/floating-point-classifications/math-is-normal/)
- [math.is_subnormal](https://www.fastly.com/documentation/reference/vcl/functions/floating-point-classifications/math-is-subnormal/)