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Fixed Point Decimal - How to use ? (_fixed(n))

 
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seidleroni



Joined: 08 Sep 2008
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Fixed Point Decimal - How to use ? (_fixed(n))
PostPosted: Wed Jan 14, 2009 11:05 am     Reply with quote
I see in the manual it lists the _fixed(n) type qualifier. I'm not really sure how to use it. Do I do something like

Code:
int_fixed(2) nTest;

for a 2 place decimal value? Then when I use that, is it already formatted to 2 decimal places? Is there any good example for using it?
PCM programmer



Joined: 06 Sep 2003
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PostPosted: Wed Jan 14, 2009 4:19 pm     Reply with quote
Here's the CCS new features page with an example:
http://www.ccsinfo.com/content.php?page=fpdec

We tested it a little bit in this thread and it failed (GPF'ed). However, I
believe this was because the array was placed in ROM with the 'const'
keyword. So just don't attempt to declare _fixed variables as 'const'.
http://www.ccsinfo.com/forum/viewtopic.php?t=36734

Other than that, I don't think much testing has been done on it (at least
based on articles posted in the forum).
mayler



Joined: 13 Nov 2008
Posts: 10

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PostPosted: Fri Jan 16, 2009 9:53 am     Reply with quote
You can use a normal number and use %w in printf to generate a formatted output. See in printf manual.
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