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Path: utzoo!utgpu!water!watmath!clyde!cbosgd!ihnp4!ptsfa!lll-lcc!rutgers!dayton!rosevax!sds!dave
From: dave@sds.UUCP
Newsgroups: comp.lang.c
Subject: Re: Query: Implementation with non-zero NULL
Message-ID: <414@sds.UUCP>
Date: Wed, 3-Jun-87 10:30:33 EDT
Article-I.D.: sds.414
Posted: Wed Jun  3 10:30:33 1987
Date-Received: Sat, 6-Jun-87 11:07:18 EDT
References: <158@delftcc.UUCP> <3673@gitpyr.gatech.EDU>
Organization: SciCom Data Services, Minnetonka, MN
Lines: 22
Keywords: C, NULL, portability


In article <3673@gitpyr.gatech.EDU>, allen@gitpyr.gatech.EDU (P. Allen Jensen) writes:
> [...] The prime also has modes of operation in which
> pointers are 48 bits even though long, int and float are all 32 bits.

I thought the C language guaranteed that there was an integral type
large enough to hold any pointer type.  From p. 210 of the Apocrypha
(== Appendix A of K&R :-)
	
	A pointer may be converted to any of the integral types
	large enough to hold it.  Whether an int or long is
	required is machine dependent.

Although the word "guarantee" doesn't appear here (as it does elsewhere),
the second sentence seems to disallow the first sentence from being
vacuously true.


Dave Schmidt

Quote for the day:
	"The superiorly armed force must win in battle."  - G. Custer