Rounding - GameCreators Forum

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Oliver

21

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Joined: 24th Nov 2002

Location: Switzerland

Posted: 3rd Nov 2004 03:55

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Well even my calculator can do this

...is there any way of rounding numbers? The int() command doesn't round up or down, it simply cuts of the decimals. I know the funny decimals in DB have already been discussed before but I did a search for rounding up/down numbers and found nothing. I really need to have exact numbers when saving from my level editor.

Thanks

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Ric

20

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Joined: 11th Jul 2004

Location: object position x

Posted: 3rd Nov 2004 10:59

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This is Mentor's code (slightly adapted):

+ Code Snippet

number# as double float
number#=24.35768
decimalplaces#=3


number#=number#*(10^decimalplaces#)
number#=number#+0.5
number#=int(number#)
number#=number#/(10^decimalplaces#)

print number#
wait key

There is something inherently weird about rounding using computers, though, that sometimes causes innacuracies. I tried putting this code into a function and it caused all kinds of errors.

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Lost in Thought

20

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Joined: 4th Feb 2004

Location: U.S.A. : Douglas, Georgia

Posted: 3rd Nov 2004 11:25

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It is probably because most decimal numbers can't actually be represented in binary (float) form. 24.35768 is actually 24.3576793671 and some others are worse off.