AVR-Chat

Robert et al, 

> At 02:18 PM 4/22/05 +0000, arhodes19044 wrote:
> >I see the modulo function for floats, but is there an 
> integer version 
> >of modulo?  I did not see that.
> 
> %

% is indeed the integer modulus (remainder after division) operator, but
implementations are allowed to implement this using either symmertic or
floored division.  This is only a problem if you use '%' with integer
operands which could possibly be negative.  In that case, two C
implementations could produce different results on the SAME processor.

In order to get a guaranteed-consistent remainder after division, the C
library provides div, ldiv and (optionally) lldiv functions that have a
DEFINED quotient and remainder that is the same for every C
implementation irrespective of processor or underlying division
opcode/algorithm.

Regards,

--
Paul Curtis, Rowley Associates Ltd  http://www.rowley.co.uk
CrossWorks for MSP430, ARM, AVR and (soon) MAXQ processors