Andrew Haley wrote:
> On 04/07/11 19:53, Georg-Johann Lay wrote:
>> Paul Smith wrote:
>>> On Mon, 2011-07-04 at 19:17 +0200, Georg-Johann Lay wrote:
>>>>>> double copysign (double x, double y)
>>>>>> {
>>>>>> unsigned short * const px = (unsigned short*)(char*)&x + 3;
>>>>>> unsigned short * const py = (unsigned short*)(char*)&y + 3;
>>> I don't get why you have the (char*) cast here?
>> It's not a source of mine. I don't know the reason why it's there.
>
> I suspect it shuts up a compiler warning. :-)
>
> Andrew.
No, gcc does not warn with -Wstrict-aliasing; not 4.5.2 and not 4.7
trunk; not with and not without (char*).
Johann
