Solutions
Reference
Learn
Changes
Blog
/
Log in
Sign Up
Navigate to...
VCL Reference
Declarations
Functions
Content negotiation
Cryptographic
Date and time
Floating point classifications
math.is_finite
math.is_infinite
math.is_nan
math.is_normal
math.is_subnormal
Math logexp
Math rounding
Math trig
Miscellaneous
Query string
Randomness
Rate limiting
Strings
TLS and HTTP
Table
UUID
Operators
Regular expressions
Statements
Subroutines
Types
Variables
Compute@Edge
Fastly API
Fastly CLI
HTTP references
Image Optimizer
Glossary
Home
Reference documentation
VCL Reference
Functions
Floating point classifications
math.is_finite
math.is_infinite
math.is_nan
math.is_normal
math.is_subnormal