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DarkBASIC Professional Discussion / Divide into Real value

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RanQor
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Posted: 23rd Jul 2010 20:09
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Why doesn't this work? It looks like it's outputting the result as an int instead of an real value. I would have assumed DBPro would "detect" the left side's type as a real type, and calculate the division accordingly, but it doesn't.

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Grog Grueslayer
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Posted: 23rd Jul 2010 20:26
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You could always make "a" real too.



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HowDo
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Posted: 23rd Jul 2010 20:28
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or this



Dark Physics makes any hot drink go cold.
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RanQor
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Posted: 23rd Jul 2010 21:19
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@Grog
I cannot use that because the A var will contain a value larger than what a Real value can hold (not in this example, but in my actual program).
BTW, nice Sig.


@HowDo
Thanks HowDo. That works perfectly.
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IanM
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Posted: 23rd Jul 2010 21:48
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Quote: "A var will contain a value larger than what a Real value can hold"

Huh? Floats can hold much larger values than integers, albeit with less accuracy.

Anyway, that's how it works in DBPro, C or C++, VB.NET, C# and pretty much every language that I can think of, UNLESS the numbers are already held internally as floats or double floats in the language in question.

Utility plug-ins collection (updated 02 Mar 2010) and
http://www.matrix1.demon.co.uk
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HowDo
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Posted: 23rd Jul 2010 22:37 Edited at: 23rd Jul 2010 22:37
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incase anyone is wondering why,
if you do this b#=a*6 there be no float.
but
if you do this b#=a*6.0 it will return a float.

Dark Physics makes any hot drink go cold.
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RanQor
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Posted: 26th Jul 2010 15:34 Edited at: 26th Jul 2010 15:56
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Quote: "Huh? Floats can hold much larger values than integers, albeit with less accuracy."


Your right, I misread the documentation.
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Diggsey
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Posted: 26th Jul 2010 15:38 Edited at: 26th Jul 2010 15:41
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You ignored the E +/- 38 bit

E = times 10 to the power of

So:
±3.4*10^±38

REAL would be a bit useless otherwise!

It's difficult to visualise that, hence the "7 digits" in brackets, which means that you can represent numbers of almost any size, but only to 7 significant figures accuracy.

[b]
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RanQor
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Posted: 26th Jul 2010 15:58
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Yeah, I misread the documentation. I was wondering why that was so low.
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