# Checking Number Types in Luau

Hello, so basically I am wondering how i can check for number types.

In Regular Lua, there is a `math` function known as `math.type()` which would allow you to check what type of number a number is, Like if its a Float, or if its an Integer.

Basic Rundown:

`Float` is a number with Decimals
`Integer` is a whole number

However in Luau, It is known as a `Double` rather than a `Float`, which I don’t understand why, and yet people get confused for angry when I call it a `Float` instead of a `Double`

``````math.type(12)   --> integer
math.type(21.1) --> float (or "double")
``````

There is Obviously a whole lot more to my statement of:

But this is just supposed to be a Basic Rundown, and I want to stay on Topic, so I wont get into that

But Inside Luau, `math.type()` doesn’t exist like with many other `math` functions, and It doesn’t appear to be Documented under Compatibility or Type Checking, unless I’m not looking thoroughly enough (which is likely the case), However, there may be reasons for `math.type()` not being in Luau that I’m probably not aware of.

How would I check for number types within Luau as it doesn’t appear to have this simple function like Lua?

`math.type()` doesn’t exist in Luau like I said.

I think you’re going to need to manually check using small code lines.

For example, if you needed to check if a number is a floating point you would do something like this:

``````local Number = 10.25

if Number ~= math.round(Number) then
print(floatNumber .." is a float number!")
end
``````

I found this solution somewhere on devforum: Is there any way of detecting if a number is a floating point? - #3 by JakeTheHero89

This isn’t perfect, It continues to print `Number.." is a float number!"` when it clearly isn’t

``````local Number = 10 -- should be a "integer" so it shouldn't print

if Number ~= math.round(Number) then
print(Number .." is a float number!") -- Still Prints
end
``````

Ok well, I didn’t read the entire post but this the updated method

That works, Thank you.

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