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DarkBASIC Professional Discussion / INT() plays with me, is this right or not? and why?

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Quel
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Posted: 21st Oct 2011 14:35
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Well, MY dark basic keeps telling me that this one:

-6.99999952316

Equals -6 converted to integer.

Why? Shouldn't it be -7?



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23
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Location: Milton Keynes, UK
Posted: 21st Oct 2011 14:39
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Int apparently rounds down.

print int(6.9)

returns "6" on my Laptop.

Looking at the help files, this is the expected behaviour?

Quote: "
INT
This command will return the largest integer before the decimal point of a real number.

"


I'd also like to point out that DBP floats are only accurate to 7 significant figures.


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Quel
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Posted: 21st Oct 2011 14:44
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That's a number calculated by DB, not me.

Well awesome i even have to write my own function for rounding numbers, we go PRO NOW!!!

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WLGfx
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Posted: 21st Oct 2011 14:50
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I noticed on someones thread a similar question. Something to do with floor() and ceil()...

Mental arithmetic? Me? (That's for computers) I can't subtract a fart from a plate of beans!
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Posted: 21st Oct 2011 15:00
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Hope this helps


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Red Eye
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Posted: 21st Oct 2011 15:00 Edited at: 21st Oct 2011 15:01
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Quote: "Well awesome i even have to write my own function for rounding numbers, we go PRO NOW!!!"




I am no a dbpro coder so i dont know if the above is correct, yet in C++ I use the same formula.

EDIT: Post above was first, congrats! YOU BEAT ME! OMG

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Green Gandalf
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Playing: Malevolence:Sword of Ahkranox, Skyrim, Civ6.
Posted: 21st Oct 2011 19:58
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Quote: "Int apparently rounds down."


It doesn't. It rounds towards zero - just as the Help file rather clumsily says.
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Posted: 21st Oct 2011 20:15
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@Green Gandalf:

Yeah, it was just an initial observation when I tried int(6.9)


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Diggsey
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Posted: 22nd Oct 2011 01:11
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Just use "floor(x#+0.5)"

[b]
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