for i = 0,1,0.01 do print(i) end
IT only prints up to .99 and idk why, I put this code in the command bar and it prints to .99 aswell
✓ ANSWER ACCEPTED
aaaaaahhhhhhh, Why does my for loop only go up to 0.99?
2 answers
✓ Accepted answer
The issue is caused by floating point precision error. Due to the 100 addition operations you're doing, the binary value loses precision as it has a finite length and the bit-representation gets too long.
You can see the 0.99 you're getting is not exactly 0.99 with this piece of code:
for i = 0, 1, 0.01 do
print(i == 0.99)
end
It is generally considered a bad practice to use decimals in for loops due to this very issue. A way better idea is to simply use integers and divide them back into the decimal form if necessary:
for i = 0, 100 do
i = i / 100
print(i)
end
It might be a simple fix. Either:
- Add 1 to your i variable if you aren't going to be using 0
for i = 0, 1, 0.01 do
print(i + 1)
end
- Or instead of 1, put 1.01 if you are going to use 0
for i = 0, 1.01, 0.01 do
print(i)
end
1 comment
0
add .01, not 1
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4 comments
This is normal take a look at http://wiki-origin.roblox.com/index.php?title=Lua_errors Tricky Mistakes.
I think that's because that essentially is this in c language: for(int i = 0,i < 1,i += 0.01){ }
but how do i evade this effect i want it to end at 1
you could add a line like if i >= 1 then break