how to tell 64 vs 32 bit architecture ?

[Kostik Belousov]

On Tue, Sep 11, 2007 at 05:16:53AM -0700, Luigi Rizzo wrote:
> On Fri, Sep 07, 2007 at 09:54:35AM -0400, Yan wrote:
> > How about this:
> > 
> > #define MY_MAGIC ((sizeof(intptr_t)==4) ? 0Xdeadbeef : 0xdeadbeefd00de123)
> 
> gcc 3.4 on a 32bit machine complains because the second constant
> is too large.
0xdeadbeefd00de123LL ?
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