Re: 2.1.101 warnings on alpha (patch)

Pavel Machek (
Mon, 18 May 1998 16:03:51 +0200


> How does one check whether the host is 64bitty? Like in the above
> "#if" or is there another (standard) way?
> Unfortunately there is no failsafe way. This is because as a cross
> compiler gcc from 32-->64 bit does not get things like:
> #if ((~0UL)==0xffffffff)
> ... 32bit version ...
> #else
> ... 64bit version ...
> #endif
> correct at all. I think it should be in an asm header file
> personally, but if you notice the check for 64-bit is often done as:

I think that

+#if BITS_PER_LONG == 64

is good, clean, etc. way. What is wrong with it?

> which is pretty unclean and should be fixed up. But at the moment
> there is no other reliable way to check it.

I believe that BITS_PER_LONG should be reliable - it was designed to


The best software in life is free (not shareware)!		Pavel
GCM d? s-: !g p?:+ au- a--@ w+ v- C++@ UL+++ L++ N++ E++ W--- M- Y- R+

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