% math operator

[ManeXi]

I've seen in alot of codes with "complex" math operations using that operator, mathemathically talking what it does exactly?

[pa3ck]

That's modulus. It get's the remainder of 2 numbers that divide into each other. For example

5%2 will give you 1, because you can only divide 2 into 5 twice (2x2=4) and the remainder is 1.

6%3 = 0, because 2x3 = 6

7%3 = 1, because 2x3 = 6 and remainder is 1

etc.

Most of the times I used it to check if a number is even like:

local myNum = 11

if ( myNum % 2 == 0 ) then -- if you divide by 2 and no remainder, it's even
  print('even')
else
  print('odd')
end

 

[ManeXi]

So if I get, it just gives the remainder of a division, nice to know.

[Gordon_G]

One more information :

In french we call this operation : Division euclidienne

In english it's probably :  Euclidean division

Edited March 10, 2017 by Gordon_G

[Citizen]

On 09/03/2017 at 18:45, ManeXi said:

it just gives the remainder of a division

Yes exactly.

22 hours ago, Gordon_G said:

In french we call this operation : Division euclidienne

Actually, no. We call this operator a "modulo" which is the remainder of a "Division euclidienne" as you said. You mixed "/" with "%"

Quote

5 % 3 = 2

5 modulo 3  = 2