0.1 + 0.1 + 0.1 = 0.30000000000000004 issue [SOLVED]

[agKing_21]

Ok not sure if someone came into this problem but why does 0.1 + 0.1 + 0.1 = 0.30000000000000004 I’ve read articles about programming and seems like it’s an issue that occurs in most programming language

This issue is annoying it screws my rebirth text and gives a non-sense number

Article of the addition explanation :

Why is 0.1 + 0.2 Not Equal to 0.3

[bluechristmas20181 (Human_Intelligence)]

I think that is an issue with the Lua interpreter (or whatever it was made on), something you can’t fix.

[cakeycocoa (StarvinMarvin)]

Can’t you just round the number?

[agKing_21]

Rounding the number would give 2 and it’s not what I want to get because my multiplier value should be as of my system 1.9

[cakeycocoa (StarvinMarvin)]

Round it to the tenths then.​​​​​​​​​​​​​​

[agKing_21]

How do you do that round function in lua round the nearest decimal digit

[superlaser60 (Laser)]

You could multiply the number by 10 so that it moves one digit to the left. Then, you can round it as an integer and divide by 10 to get your number rounded to the tenths.

[cakeycocoa (StarvinMarvin)]

string.format("%0.1f", x) -- x is your number

https://devforum.roblox.com/t/rounding-numbers/13603

[agKing_21]

Oh shit man that might solve my issue thanks

[agKing_21]

This solved my issue indeed thanks @cakeycocoa

Code of the solution :

if #DisciplineValues == 5 then
		if DisciplineValues[1] / 10 >= 10 then
			_10Divisor = math.floor(DisciplineValues[1] / 10)
			print("DIVISOR 10 IS : " .. _10Divisor)

			for i = 1, _10Divisor do
				Multiplier += 0.1
				local formattedString = string.format("%0.1f", Multiplier)
				FormatedMultiplier = tonumber(formattedString)
				
				print("MULTIPLIER VALUE IS : " .. FormatedMultiplier)
				DEFAULT_REBIRTH_MAX += 10
			end

		end
	end
	
	
	print("MULTIPLIER VALUE IS : " .. FormatedMultiplier)
	print("REBIRTH MAXIMUM VALUE IS : " .. DEFAULT_REBIRTH_MAX)