Re: [Iverilog-devel] iverilog functions

[Stephen W. <st...@ic...>]

If you make a small but complete example that we cal compile
for ourselves, we can take a look at this.

On 02/08/2016 12:50 PM, Dan McLeran wrote:
> I am using iverilog to learn SystemVerilog. I am following along in a
> digital system design book and am having trouble building one of the
> examples. The code uses a function to calculate log2:
> 
> module #(parameter AL = 8, BL = 8, QL = AL + BL) ...
> 
>     logic[clog2(AL):0] count;
>     ...
>     function clog2(input int n);
>         begin
>             clog2 = 0;
>             n--;
>             while(n > 0)
>                 begin
>                     clog2++;
>                     n >>= 1;
>                 end
>          end
>     endfunction
> endmodule
> 
> I calling iverilog like this:
> 
> iverilog -g2012 -Wall -o booth booth.sv
> 
> It seems to get hung processing the loop or detecting n == 0 or
> something. Is there an easy way
> to debug this? I was thinking I'd run iverilog within gdb but maybe
> there is a faster way to determine what is happening?
> 
> Regards,
> 
> Dan McLeran
> 
> ------------------------------------------------------------------------------
> Site24x7 APM Insight: Get Deep Visibility into Application Performance
> APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month
> Monitor end-to-end web transactions and take corrective actions now
> Troubleshoot faster and improve end-user experience. Signup Now!
> http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140
> _______________________________________________
> Iverilog-devel mailing list
> Ive...@li...
> https://lists.sourceforge.net/lists/listinfo/iverilog-devel
> 


-- 
Steve Williams                "The woods are lovely, dark and deep.
steve at icarus.com           But I have promises to keep,
http://www.icarus.com         and lines to code before I sleep,
http://www.picturel.com       And lines to code before I sleep."