Fredrik Eriksson <fe79}--at--{yahoo}--dot--{com> wrote:
> On Mon, 31 Mar 2008 22:58:31 +0200, Warp <war### [at] tagpovrayorg> wrote:
> >   Stack allocation is actually pretty fast (at least with gcc in linux).

> That stack allocation is fast should come as no surprise since it  
> typically requires a grand total of zero additional CPU instructions. In  
> the worst case it requires a single one-cycle instruction.

  But so does using a pre-allocated array. The array is *already* allocated.
The function doesn't need to allocate it each time. Yet, in some cases,
the function becomes faster by using the stack-allocated array than the
pre-allocated array in the heap.

-- 
                                                          - Warp

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