odd and even

[bhnh]

Is there a simple way in MAXScript to determine whether a number value is odd or even? In languages I'm familiar with, modolo is used; divide the number by two and if the answer's not an integer then it's odd.

[Steve_Curley]

mod (modulo) exists in MaxScript as

mod <number1> <number2>
Which returns a floating point number as the result.

e.g.

if (mod a 2) != 0 then
blah

Is that what you were after?

That (and other similar functions) are on the "Number Values" help page.

[bhnh]

Exactly! Thanks, Steve.

[Steve_Curley]

These might be useful. They probably need some error handling to account for a missing parameter but should serve as a starting point.

[bhnh]

Thanks. Upon reading your first post I immediately tried this out...

fn evalNum a =
(
    if(mod a 2) != 0 then
    messagebox "odd number" else
    messagebox "even number"
)

evalNum 8
evalNum 7

Works a charm. For what I'm thinking of the Boolean return is the obvious way to go. Typically, when I get enthused about something I tend to be more impatient than methodical.

[Steve_Curley]

Hehe - me too, on occasion 🙂

The Boolean returned value is the way to go for normal use, but the Messagebox version can be useful for debugging. Easy enough to have both in the script and comment/uncomment as required. There may even be a way to conditionally define them based on a variable (or constant) value, but I've not looked into that.