this post was submitted on 07 Dec 2023
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Programming Horror

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submitted 11 months ago* (last edited 11 months ago) by andioop to c/programming_horror
 
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[โ€“] [email protected] 4 points 11 months ago (1 children)

Ackchyually-- IEEE 754 guarantees any integer with absolute value less than 2^24 to be exactly representable as a single precision float. So, the "divide by 2, check for decimals" should be safe as long as the origin of the number being checked is somewhat reasonable.

[โ€“] [email protected] 2 points 11 months ago

Of course, but it's somewhat nasty when all of a sudden is_even doesn't do what you expect :).