Floating point number arithmetic Bug

[SUOUSK (Ramsa_Ajeossi)]

Floating point number arithmetic Bug

Hello, I was working with decimal calculations in scripting, and I encountered a strange issue. For example, 40.2 turned into 40.3000…4. Is this a bug?

This bug causes inaccuracies. Does anyone know about this issue?

Help me…

This is really frustrating for me.

[DevDAmaro]

But what is your main goal in here, is it round the number cus how did it go to 4.3… can you show us the script?

[SUOUSK (Ramsa_Ajeossi)]

The code for adding is:

local Acc = script.Parent.Parent.Parent.Parent.Acc

script.Parent.MouseButton1Click:Connect(function()
	if Acc.Value == 1 then
		
	else
		Acc.Value += 0.1
	end
end)

and the code for subtracting is:

local Acc = script.Parent.Parent.Parent.Parent.Acc

script.Parent.MouseButton1Click:Connect(function()
	if Acc.Value == 0 then

	else
		Acc.Value -= 0.1
	end
end)

[DevDAmaro]

can you print the Value to make sure it only has decimals?

[SUOUSK (Ramsa_Ajeossi)]

The initial value is 40. However, each time those buttons are pressed, the value increases or decreases by 0.1.

It keeps adding, and then an unknown bug occurs.

[DevDAmaro]

so, Im assuming your Value is a NumberValue, well computers rlly have a strange behavior sometimes, such as that thing.

local Acc = script.Parent.Parent.Parent.Parent.Acc

script.Parent.MouseButton1Click:Connect(function()
	if Acc.Value == 1 then
		
	else
		Acc.Value += 0.1
        Acc.Value = tonumber(string.format("%.1f", Acc.Value))
	end
end)

maybe try this, it rounds the number to decimals since its a float

[SUOUSK (Ramsa_Ajeossi)]

Thank you so much! The bug has been fixed!!"