Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.1 6/24/83 (MC830713); site hwcs.UUCP
Path: utzoo!linus!vaxine!wjh12!genrad!decvax!harpo!ulysses!mhuxl!houxm!hogpc!houti!ariel!vax135!ukc!edcaad!hwcs!chris
From: chris@hwcs.UUCP
Newsgroups: net.unix-wizards
Subject: Re: Ctype.h (start arrays at 1 then add 1 before looking up)
Message-ID: <62@hwcs.UUCP>
Date: Thu, 5-Apr-84 04:39:36 EST
Article-I.D.: hwcs.62
Posted: Thu Apr  5 04:39:36 1984
Date-Received: Wed, 4-Apr-84 03:26:37 EST
References: <2189@ecsvax.UUCP>
Organization: Computer Sci., Heriot-Watt U., Scotland
Lines: 13

I prefer the following technique for -1 origin arrays (or indeed
any other origin).  I think it is easier to understand, because
it makes no assumption that C will preserve the order of fields
within a structure, and will insert no padding between them:

	------------------------------------------------------
	char	tableinit[129] = { /* Initial values ... */ };
	char	*table = tableinit+1;
	/* table is now an ARRAY [-1..128] OF CHAR, in Pascal
	 * terminology.
	 */
	------------------------------------------------------
Chris Miller