On Fri, 01 Jul 2011 02:44:36 +0300
Nikos Chantziaras <realnc@...> wrote:

> >> unsigned long int *px = (unsigned long int*)&x;

> And here you can read more thorough information about strict aliasing:
> 
>    http://labs.qt.nokia.com/2011/06/10/type-punning-and-strict-aliasing
> 

Thanks for this link.  I can see what's happening now.

These types of pointers are admittedly unusual, but it's the only
quick way I know to load a double variable with a certain bit pattern,
or to convert big/small endian values, etc.  I ordinarily don't do these
things, but when I do I 'll keep this aliasing in mind.

Frank Peters