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DarkBASIC Professional Discussion / No real numbers :(

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Cybermind
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Joined: 28th Nov 2002
Location: Denmark
Posted: 20th May 2011 16:04
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This code produce a result of 2??? Shouldn't the hash mark make it a real number?

do
distance_to_crosshair# = ((5)/2)
print distance_to_crosshair#
loop

It produces 2 with and without the # :S

The byte chrunchers are coming...
DIVIDING BY ZERO/BECAUSE WE SUCK...
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paul5147
20
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Joined: 11th Jan 2006
Location: Hot & Sunny
Posted: 20th May 2011 16:20
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Try using real numbers instead of integers for the sum

do
distance_to_crosshair# = ((5.0)/2.0)
print distance_to_crosshair#
loop

see if this helps
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Cybermind
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Posted: 20th May 2011 17:03
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It helped, but why?

The byte chrunchers are coming...
DIVIDING BY ZERO/BECAUSE WE SUCK...
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Van B
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Joined: 8th Oct 2002
Location: Sunnyvale
Posted: 20th May 2011 17:09
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DBPro will not make any assumptions about the data your calculating - you have to specify the .0 to 'tell' DBPro that your calculating a real number instead of an integer. It might well just be a speed concern, because integer math is faster than real number math, so it might try and get away with using integers by default.

Health, Ammo, and bacon and eggs!
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Kevin Picone
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Joined: 27th Aug 2002
Location: Australia
Posted: 20th May 2011 17:14
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It's the auto-casting rules. So operations between two integers always produce an integer result. Whereas operation between a mixtures of Integer and floats or all floats produce a float.


Hmm, I wonder what's coming in 2011?
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Neuro Fuzzy
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Joined: 11th Jun 2007
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Posted: 20th May 2011 19:30
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with integer division, the decimal part is rounded off. 5/3=1, 9/2=4, etc. This is actually really useful in computer science, but it's kinda confusing at first xD


Tell me if there's a broken link to images in a thread I post, and I'll fix 'em.
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Cybermind
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Joined: 28th Nov 2002
Location: Denmark
Posted: 21st May 2011 10:42
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Allrighty, I already use integer variables to round of float variables#

The byte chrunchers are coming...
DIVIDING BY ZERO/BECAUSE WE SUCK...
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