Path: utzoo!utgpu!water!watmath!clyde!rutgers!sdcsvax!ucsdhub!hp-sdd!hplabs!well!ewhac
From: ewhac@well.UUCP (Leo 'Bols Ewhac' Schwab)
Newsgroups: comp.sys.amiga
Subject: Re: Byte/word/long alignment
Message-ID: <4974@well.UUCP>
Date: 12 Jan 88 22:28:23 GMT
References: <4366@garfield.UUCP>
Reply-To: ewhac@well.UUCP (Leo 'Bols Ewhac' Schwab)
Distribution: na
Organization: The CIA:  Third-World Governments Destabilized While-U-Wait.
Lines: 28

In article <4366@garfield.UUCP> john13@garfield.UUCP (John Russell) writes:
>If I want to create an auto-initialized array of UBYTES, and then later
>access each 4 bytes as a longword, can I ensure that the array is longword
>aligned in some portable way (eg by placing it immediately after some other
>32-bit global variable)?

	Why don't you simply create it as an array of longwords, then access
it as bytes with a coerced pointer?

ULONG	foo[] = { 1, 2, 3, 4, 5, ...n };

bar()
{
	UBYTE	*bp;

	bp = (UBYTE *) foo;
	.
	.
	.
}

	No muss, no fuss, guaranteed alignment (if the compiler supports it).

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Leo L. Schwab -- The Guy in The Cape	ihnp4!ptsfa -\
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