Preprocessor numbers and #if

Article View: comp.std.c

Article #707

#707

From: Norman Diamond
Date: Wed, 11 Oct 1989 08:05

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1112 bytes

In evaluating the constant-expression of a #if directive, any
identifiers that are left over after macro substitution are changed
into the constant 0.  What about preprocessor numbers that are left
over after numeric conversion?  For example, 1f0x3 does not convert
into a long or double.  Should it be replaced by the constant 0?

-- 
Norman Diamond, Sony Corp. (diamond%ws.sony.junet@uunet.uu.net seems to work)
  The above opinions are inherited by your machine's init process (pid 1),
  after being disowned and orphaned.  However, if you see this at Waterloo or
  Anterior, then their administrators must have approved of these opinions.

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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!gem.mps.ohio-state.edu!ginosko!uunet!kddlab!titcca!sragwa!wsgw!socslgw!diamond
From: diamond@csl.sony.co.jp (Norman Diamond)
Newsgroups: comp.std.c
Subject: Preprocessor numbers and #if
Message-ID: <10957@riks.csl.sony.co.jp>
Date: 11 Oct 89 08:05:39 GMT
Reply-To: diamond@ (Norman Diamond)
Organization: Sony Computer Science Laboratory Inc., Tokyo, Japan
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