Re: [avr-gcc-list] GCC does useless 16-bit operations

[Dave Hylands]

Hi Eric,

> However, I am curious. What do you get with this:
>
> uint8_t temp = (tx_producer_index++) % 64;

The wrong answer :)

It would need to be

uint8_t temp = (++tx_producer_index) % 64;

to give a functionally equivalent result.

--
Dave Hylands
Vancouver, BC, Canada
http://www.DaveHylands.com/