Re: gEDA-user: pcb crooked traces

[Peter Clifton <pcjc2@xxxxxxxxx>]

On Fri, 2010-10-08 at 15:42 -0400, DJ Delorie wrote:
> > Any idea of the loss of performance given that virtually all PCs 
> > these days are actually 64 bit machines?
> 
> My dual-core 3.2GHz machine supports 64-bit, but I installed a 32-bit
> OS for compatibility.  So, 64-bit math is a performance hit for me.

I'm not certain that is true.. or are you compiling with CFLAGS for a
non 64-bit CPU? I thought the 32/64 bit OS issue was mostly to do with
address pointers, rather than aritmetic.

I was fairly sure one could execute 64bit native CPU arithmetic
instructions under a 32-bit OS, just that the executable would not be
portable to machines which didn't support those instructions.

-- 
Peter Clifton

Electrical Engineering Division,
Engineering Department,
University of Cambridge,
9, JJ Thomson Avenue,
Cambridge
CB3 0FA

Tel: +44 (0)7729 980173 - (No signal in the lab!)
Tel: +44 (0)1223 748328 - (Shared lab phone, ask for me)



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