Floating Point Fuzziness #coding #programming #javascript #python

What?

Math.round()

I hate that I don't just understand but that I can feel this from personal experience...

felt the 2.9999999999999991 😭🙏

Agred

Array.prototype.sort() 💀

That's just IEEE floats.

JS, Java, C++ whatever.

console.log(0.1+0.2)
0.30000000000000004

Why this issue??

Isn’t this should be 0.12?

Wait I'm floated

Php dev spotted 🤦

Why are you even comparing float?

Why not != like a float plus a float is obv going to be a float no need to make it be strictly equal to

Somehow I read it like:
0.1! + 0.2! == 0.3!

Not a js thing, its global

Use ints instead of floats.

This is just a problem with floating point numbers in general. Remember to tolerance your equality checks. C++ has a useful tool for this in the form of std::Numeric_Limits<type>::epsilon()

True

It should be != no?

Bro i thought it was 0.2!

Number.toFixed(2)

Or however many decimal places are significant.

my stupid ass thought that was a factorial so i had to double check

This is like a calculator giving you 10+12E or some shit when on the graph its clearly 0

What is this language? Mostly unequal writed as !=

Why?

true

Js😵‍💫

! == ?! Я знаю только ! =

for those wondering, that's the strict comparison operator (data types must be the same)....just missing the IF statement

😅

"Don't try to bend the spoon. Realize... there is no spoon" ahh moment

A programmer has a problem. They decide to use floating point numbers. Now they have 1.99999999991 problems.

Its just not possible.

it has to be != not !==

Try use ~~

!=

It's because to a computer 1 is not really 1.
It's 1.0000000000000001 or something.
So when you say 1 == 1 they might say it's false in some programming languages

False

As someone learning js and html and css more moving from other languages and tools I first ran into this the other day and it bothered me a lot. I made it round my number * 10 and divide by 10 to make sure it doesn’t happen again, but it probably still does and I’m just not gonna log it and I’ll sleep fine as long as I never do

isnt this interpreted right to left? meaning this is equal 1.1

True

!yes = no

Looks familiar to the if statement in JavaScript...🤔

Sirf 19 ,20 ka hi tu farak ha 😂

"911 what's your emergency?" "math isn't mathing in JavaScript"

Aww man. And here i was thinking it was a concatenation meme.

All languages except COBOL, and other languages with built-in decimal type.

I always code it like

Float apple = 0.1;
Float banana = 0.2;
float potato = 0.3;

Void THE_MATH(){
If apple + banana != Potato{
Kill_myself();
}
}

Math.abs((0.1 + 0.2) - 0.3) < Number.EPSILON