Hi Herbert,

I'm not an expert with PicCLite (more experience in c)  but:
for an int with 32bits if you want to have the upper 16 bits you can
    - do a right shifting which is perhaps not suitable for Pic ....
    - use a union (the generated code has to be checked)
    - use a cast like *(((short*)&number)+1)
    - or access directly the upper 16 bit of this int if you know the memory
organization.

Regards,
Nicolas


> Having some problems getting code to fit within the constraints of
PICClite.
>
> One area that is costing me quite a bit, I believe, is trying to access
> singular bytes of a multibyte structure. For example:
>
> say I have an int number
> I want the upper 16 bits of this number
>
> right now I'm doing it like this:
> (char)(number/256)
>
> Ugly, I know. Is it possible to access the upper byte using a union?
> Is a sort of union structure already built in?  Something like number.hi?
> Does PICCLite recognize what I'm doing with that statement and generate
the
> right, small code?
>
> Perhaps using a pointer will do? Something like:
> (char)(*(&number+1))?
>
> Any other hints on how I might optimize code for PICC?
>
> Thanks for any help. TTYL

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.