difference between rem and mod functions?

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Rakan Alharthi
Rakan Alharthi 2022-3-14
评论： Stephen23 2022-3-14
im confused , What is the difference between rem and mod functions? can you give a simple example?

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Stephen23
Stephen23 2022-3-14
编辑：Stephen23 2022-3-14
Ran in:
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.

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