Having issues with extrem many Decimal places

ThatGuyPhil · 2022-07-16T09:40:52.491Z

Hello FiveM Community, I got a decent Issue on my Server. So I found out that my Server has some problem when it comes to “numbers” I found my issue out, because I used a Script where you need to enter Values like “0.04, 0.03, 1.02” and …, sooo, normally it would use the number I type in like “0.04” but instead it makes a “0.04000009” or something, that is very annoying and I have no Idea where it comes from, I also tried another Hoster/Server, no luck. Not everyone has this issue, I see for some people it works normal and on my local host its fine too, I add an Image that shows my issue. (In the Image I printed the args for “0.04”. Thanks in Advance for helping and have a good one!

Bild_2022-07-16_114044953697×70 41.6 KB

NightCityRPNet · 2022-07-17T19:27:16.791Z

I think this might be related to your issues

en.wikipedia.org

Floating-point error mitigation

Floating-point error mitigation is the minimization of errors caused by the fact that real numbers cannot, in general, be accurately represented in a fixed space. By definition, floating-point error cannot be eliminated, and, at best, can only be managed. Huberto M. Sierra noted in his 1956 patent "Floating Decimal Point Arithmetic Control Means for Calculator": Thus under some conditions, the major portion of the significant data digits may lie beyond the capacity of the registers. Therefor...

But I would simply just round the decimal places you need.
This utility function may help you to achieve this.

function round(num, numDecimalPlaces)
	local mult = 10^(numDecimalPlaces or 0)
	return math.floor(num * mult + 0.5) / mult
end

ThatGuyPhil · 2022-07-19T00:23:22.336Z

Thank you for your reply, thanks for the tip, sadly I still being stuck here, I tried some things, but I don’t get it to work, do you maybe have an idea how I could make the function complete functional? Im kinda stuck at this part.

Jamie32 · 2022-07-19T07:46:53.345Z

Im not sure how your system is working but It should work like this

Input: 0.04

function round(num, numDecimalPlaces)
	local mult = 10^(numDecimalPlaces or 0)
	return math.floor(num * mult + 0.5) / mult
end


local input = yourvalue
local roundedvalue = round(input, 2) -- The function round returns your the Value (First Value is your number, second is how much Decimal places you want.
print(roundedvalue)

ThatGuyPhil · 2022-07-19T10:44:12.945Z

Thank you, so I have to paste it into a function.lua right?

Jamie32 · 2022-07-19T12:32:22.887Z

if you send me your chat script i can implement it for you

ThatGuyPhil · 2022-07-19T12:42:50.676Z

Much appreciated, here is my Chat resource.
chat.zip (216.2 KB)

Jamie32 · 2022-07-19T13:09:12.351Z

can you tell me where your print is?

ThatGuyPhil · 2022-07-19T13:15:19.935Z

The print is in another random resource just to test it, here is the code for the print: RegisterCommand("test", function(source, args, rawCommand) print(tonumber(args[1])) end, false)

Jamie32 · 2022-07-19T13:23:54.439Z

This is how it works with your test command

function round(num, numDecimalPlaces)
    local mult = 10^(numDecimalPlaces or 0)
    return math.floor(num * mult + 0.5) / mult
end

RegisterCommand("test", function(source, args, rawCommand) 
    local input = tonumber(args[1])
    local rounded = round(input, 3)
    print(rounded)
end, false)

ThatGuyPhil · 2022-07-19T13:42:08.331Z

Thank you very much, can I ask, is that now for all these Decimal Numbers? Because I was using a BAC Script where I can set a BAC Level, and there I had the issue that it was not “0.04” or something instead it was “0.040006” like in the picture, do I have to implement it in every script or will this code fix it for the whole server?

ThatGuyPhil · 2022-07-19T13:57:29.757Z

Nvm got it! Alright my Issue was solved here, Thanks for you both guys for helping me!