Question on strict aliasing in C.

[Andrew Haley]

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.