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#1 2011-06-12 09:56:41
- SpriteMaster
- Scratcher
- Registered: 2009-01-25
- Posts: 1000+
3.800000000000000002
I was setting an 'X' coordinate for a game i'm making and when I set one to '3.28', it set it to '3.2800000000000002'. Help?
Last edited by SpriteMaster (2011-06-12 10:05:25)
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#2 2011-06-12 10:01:03
- Paddle2See
- Scratch Team
- Registered: 2007-10-27
- Posts: 1000+
Re: 3.800000000000000002
SpriteMaster wrote:
I was setting an 'X' coordinate for a game i'm making and when I set one to '3.82', it set it to '3.800000000000002'. Help?
Weird...do you have a project on the site showing this issue? I'd love to see it. And was it a sprite position or a variable?
I've seen a lot of cases where somebody tried to set a variable to, say, '3.8' and the displayed result was something like '3.799999999999999'. That's just a demonstration that computers can't exactly represent floating point numbers (numbers with a decimal point) so there is often a small amount of error. But what you are showing is a much bigger discrepancy.
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#3 2011-06-12 10:05:03
- SpriteMaster
- Scratcher
- Registered: 2009-01-25
- Posts: 1000+
Re: 3.800000000000000002
Paddle2See wrote:
SpriteMaster wrote:
I was setting an 'X' coordinate for a game i'm making and when I set one to '3.82', it set it to '3.800000000000002'. Help?
Weird...do you have a project on the site showing this issue? I'd love to see it. And was it a sprite position or a variable?
I've seen a lot of cases where somebody tried to set a variable to, say, '3.8' and the displayed result was something like '3.799999999999999'. That's just a demonstration that computers can't exactly represent floating point numbers (numbers with a decimal point) so there is often a small amount of error. But what you are showing is a much bigger discrepancy.
It was a sprite position. I actually set it to 3.28, sorry. So, I set it to 3.28 and it made it 3.28000000002
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#4 2011-06-19 10:16:18
- SpriteMaster
- Scratcher
- Registered: 2009-01-25
- Posts: 1000+
Re: 3.800000000000000002
It only happens with that number and I tried it with a bunch of other numbers.
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#5 2011-06-19 17:08:11
- MarioLuigi2009
- Scratcher
- Registered: 2009-12-26
- Posts: 63
Re: 3.800000000000000002
It also happens with a few others. Like 2.54 and 3.14 (i think).
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#6 2011-06-21 15:04:09
- SpriteMaster
- Scratcher
- Registered: 2009-01-25
- Posts: 1000+
Re: 3.800000000000000002
Well 3.14 I get. I guess it's just another minor glitch we can't explain * shrug*
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