[boost] strange memcpy example

From: Jens Guether (guether_at_[hidden])
Date: 2008-08-29 10:11:47

Hi all together,

I found a very strange example of the memcpy() function on the web page:

http://www.boost.org/community/generic_programming.html

----------------------------------------------------------
void* memcpy(void* region1, const void* region2, size_t n)
{
  const char* first = (const char*)region2;
  const char* last = ((const char*)region2) + n;
  char* result = (char*)region1;
  while (first != last)
    *result++ = *first++;
  return result;
}
----------------------------------------------------------

Perhaps I missed something essential, but usually the memcpy() function returns
a pointer to the destination (region1 in this case).

The above version of memcpy() returns region1+n.

regards
Jens

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