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257m@sh.itjust.works ⁨1⁩ ⁨year⁩ ago

number % 2 == 0
and
// If integer
(number &amp; 0b1) == 0

Are the only sane ways to do this. No need to floor.

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homura1650@lemmy.world ⁨1⁩ ⁨year⁩ ago
If you are using floats, you really do not want to have an isEven function …

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- 257m@sh.itjust.works ⁨1⁩ ⁨year⁩ ago
  Whats the alternative a macro? An inline function is perfectly fine for checking if a nunber is even. Compiler will probably optimize it to a single and instruction.
  
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  - homura1650@lemmy.world ⁨1⁩ ⁨year⁩ ago
    No. The alternative is to not use a float. Testing if a float is even simply does not make sense.
    
    Even testing two floats for equality rarely makes sense.
    
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    257m@sh.itjust.works ⁨1⁩ ⁨year⁩ ago
    It does if it dosen’t have a decimal. If it has decimal then it automatically isn’t and the function will return false.
    
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