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From: throopw@dg_rtp.UUCP (Wayne Throop)
Newsgroups: net.lang.c
Subject: Re: dynamic array parameters
Message-ID: <61@dg_rtp.UUCP>
Date: Thu, 26-Dec-85 14:47:51 EST
Article-I.D.: dg_rtp.61
Posted: Thu Dec 26 14:47:51 1985
Date-Received: Sat, 28-Dec-85 01:34:04 EST
References: <977@brl-tgr.ARPA> <57@dg_rtp.UUCP>
Lines: 14

A small PS.  Naturally, the macro

> #define index(a,i,j)  (*(a + i*d1 + j))

really needs extra parenthesization, like so:

#define index(a,i,j) (*((a) + (i)*d1 + (j)))

or, (using subscripts) like so:

#define index(a,i,j) ((a)[(i)*d1 + (j)])
-- 
Wayne Throop at Data General, RTP, NC
<the-known-world>!mcnc!rti-sel!dg_rtp!throopw