How to find next number divisible by n

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Pedro Oliveira
Pedro Oliveira el 22 de Nov. de 2017
Comentada: Pedro Oliveira el 22 de Nov. de 2017
Hi, I have a number 'a' and I want to find the next number 'b' that is divisible by a certain n (if 'a' isn't divisible by n).
Initially I was doing it like below:
b = a + rem(a,n)
But I noticed that it gives the distance to the closest number that is divisible by n. In the specific example of being a = 14 and n = 4, rem(a,n) gives 2 since the closes number divisble by 4 is 12. Thus b will be 14 (not divisible by 4) instead of 16, as originally intended.
Thank you for any help you can provide.

Respuesta aceptada

Torsten
Torsten el 22 de Nov. de 2017
b = a + (n - rem(a,n))
Best wishes
Torsten.

Más respuestas (1)

David J. Mack
David J. Mack el 22 de Nov. de 2017
How about
b = n * ceil(a / n)
Greetings, David
  1 comentario
Pedro Oliveira
Pedro Oliveira el 22 de Nov. de 2017
This also works! Thank you! I didn't know the ceil function but I'll look into it.

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