What uses do floating point NaN payloads have?

Question

I know that IEEE 754 defines NaNs to have the following bitwise representation:

• The sign bit can be either 0 or 1
• The expone

Answer 1

https://softwareengineering.stackexchange.com/questions/185406/what-is-the-purpose-of-nan-boxing

Take a look at that link for an explanation of how js engines use nan boxing