math.NAN

FLOAT, read-only, constant.

Available in all subroutines.

A value that is "not a number." When converted to a STRING value, this is rendered as NaN.

Try it out

math.NAN is used in the following solution recipes, which show real world use cases. Click RUN to provision a Fastly service, execute the code on Fastly, and see how the function behaves.

Comprehensive logging

Fastly offers a myriad of different variables that you can log. See and test a large collection here.

User contributed notes

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