Generic Swap

[Peter Adams Whipple]

In article <1990Jun11.133729.6575 at cs.utk.edu> wozniak at utkux1.utk.edu (Bryon Lape) writes:
>
>	Recently I tried to write a generic swap routine using void
>pointers, but it did not work.  Below is an example:

[stuff deleted]

>generic_swap(void *, void *)
>{
>   void *temp;
>
>   temp = b;
>   b = a;
>   a = temp;
>}

You are swapping the pointer (which are local values) instead of
swapping the values (*a and *b).  If you can use *a, *b, and *temp, the
routine will work as expected.  Off-hand, I don't remember if you can
dereference a void *.

-- Peter