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From: karl@haddock.ISC.COM (Karl Heuer)
Newsgroups: comp.lang.c
Subject: Re: Comparing chars to constants
Message-ID: <1477@haddock.ISC.COM>
Date: Fri, 23-Oct-87 10:52:57 EST
Article-I.D.: haddock.1477
Posted: Fri Oct 23 10:52:57 1987
Date-Received: Sun, 25-Oct-87 16:06:19 EST
References: <4663@elroy.Jpl.Nasa.Gov> <7373@alice.UUCP> <1261@csib.UUCP>
Reply-To: karl@haddock.ima.isc.com (Karl Heuer)
Organization: Interactive Systems, Boston
Lines: 8

In article <1261@csib.UUCP> jwhitnel@csib.UUCP (Jerry Whitnell) writes:
>The preferred technique is    ( ( (int) c ) & 0xff ) == 0x80

This assumes that char is 8 bits.  (Though the use of "0x80" may already be
making that assumption.)  I'd go with "c == (char)0x80", and if the compiler
can't handle it, send in a bug report and/or change vendors.

Karl W. Z. Heuer (ima!haddock!karl or karl@haddock.isc.com), The Walking Lint