From owner-cvs-all  Wed Jan  9 16:51:41 2002
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Date: Thu, 10 Jan 2002 11:52:06 +1100 (EST)
From: Bruce Evans <bde@zeta.org.au>
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To: Mike Silbersack <silby@silby.com>
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Subject: Re: cvs commit: src/sys/kern uipc_socket2.c
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On Wed, 9 Jan 2002, Mike Silbersack wrote:

> On Tue, 8 Jan 2002, Bruce Evans wrote:
> > The compiler always promotes types (not sizes) in binary expressions.
> > This works right for comparison except when the operand types have the
> > same size but differ in signedness.  The problem with the min() and
> > MIN() macros is that they evaluate their args more than once.
>
> Ah, I can see the potential problems with signedness.  As for the
> evaluation of arguments; wouldn't the inline min functions in libkern.h do
> the same?

No, because inline functions have function semantics.  Functions don't
reevaluate their args.

Bruce


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