Re: [avr-gcc-list] Improving in leaps and skips!

[Richard Urwin]

On Tuesday 01 Mar 2005 7:45 pm, E. Weddington wrote:
> Björn Haase wrote:
> >int
> >foo3 ( int func(int), int a)
> >{ return a + a * func (27);
> >}
> >
> >void
> >foo (int a, int b)
> >{
> >     int
> >     foo2 (int c)
> >     { return c + b;
> >      }
> >
> >     return foo3 (&foo2, a);
> >}
> >
> >is considered to be legal code for gcc. The avr port does presently
> > lack support for this extension.
>
> Bleah. :-P
> I wouldn't even know why that would even be used.

Say you're calling a sort routine that uses a function parameter to do 
the comparison. Instead of muddying file scope with a function that 
does the comparison, you can put it inside the function that calls the 
sort routine.

void foo ()
{
 int a[...], b[...];

 bool compint(int a, int b) {return a > b;}

 ...
 sort (a, b, sizeof(a[0]), compint);
 ...
}

-- 
Richard Urwin