---
title: math.FLOAT_MIN_EXP
summary: null
url: >-
  https://www.fastly.com/documentation/reference/vcl/variables/math-constants-limits/math-float-min-exp
---

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

**Available in:** all subroutines

Minimum value in base 2 of the exponent part of the `FLOAT` type.