Multiply by 10, then shift 1 left?


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From: "alan smith" <micro_eng2@yahoo.com>
Sent: Thursday, May 13, 2010 14:39
To: "Microcontroller discussion list - Public." <piclist@mit.edu>
Subject: [PIC] converting C to F

> Processor is a 18F23K20
>
> I've never had the requirement to do much math with a PIC, other than 
> simple divide by 2 or 4 (shifts), add and subtract
>
> So looking for a little help in implementing this
>
> temp_F = (temp_C * 9 / 5) + 32;
>
> The temp_C * 9 can be done with the MULLW instruction.  Just not to sure 
> about the divide by 5 part?
 

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