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From: rjc@uk.ac.ed.cstr (Richard Caley)
Newsgroups: comp.lang.c
Subject: Re: IsUnsigned() function?
Message-ID: <RJC.90Aug25041948@brodie.uk.ac.ed.cstr>
Date: 25 Aug 90 04:19:48 GMT
References: <1990Jul16.214155.5087@Neon.Stanford.EDU> <3539@sactoh0.UUCP>
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How about...

#define IsUnsigned(n) ((n-n-1) > 0 )

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rjc@uk.ac.ed.cstr