difference between rem and mod functions?

im confused , What is the difference between rem and mod functions? can you give a simple example?

[Arif Hoq]

you can find it here

https://www.mathworks.com/matlabcentral/answers/403870-difference-between-mod-and-rem-functions

Answer 1

[Stephen23]

See: https://www.mathworks.com/matlabcentral/answers/403870-difference-between-mod-and-rem-functions#answer_323069

and the MOD and REM documentation:

https://www.mathworks.com/help/matlab/ref/mod.html#bue4xl3-6

https://www.mathworks.com/help/matlab/ref/rem.html#bu444r1-2

They both give exactly the same outputs if their input arguments are positive. If their input arguments are negative, then their outputs can differ. This is very easy to demonstrate:

V = -10:0.25:10;
M = [mod(V(:),3),rem(V(:),3)];
plot(V(:),M)
legend('mod','rem','location','best')

You could loosely think of REM as answering the question "what remains after I divide by Q", whereas MOD is completely periodic. Neither is more "correct" or "better", each one is useful in different situtations.

[Rakan Alharthi]

thank you so much !

[Stephen23]

@Rakan Alharthi : my pleasure! Please remember to accept my answer if it helped you.