this post was submitted on 17 May 2025
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[–] [email protected] 2 points 4 days ago* (last edited 4 days ago)

Another way to check whether a number is NaN:

const isNaN = res !== res;

As NaN is the only value out there that is not equal to itself. See my other comment on this post for more: https://programming.dev/comment/17221245

This comparison should work in every programming language out there that implements/respects/uses IEEE 754 floating point numbers.