Re: LSC: booleans != TRUE ??

Article View: comp.sys.mac

Article #25791

#25791

From: Larry Rosenstein
Date: Tue, 01 Mar 1988 01:16

16 lines
1115 bytes

In article <4097@husc6.harvard.edu> olson@endor.UUCP (Eric K. Olson) writes:
>In a recent article Richard Siegel writes:
>>
>>In LightspeedC, TRUE is one and FALSE is zero. 
>
>If memory serves me correctly, portions of the Mac OS use the highest
>order (sign) bit for the state of a Boolean, a Pascalism, I think (forgive

MPW Pascal uses 1 to mean TRUE and 0 for FALSE.  Inside Macintosh says that
a BOOLEAN is represented in bit 0 (the low-order bit) of a byte.

-- 
		 Larry Rosenstein,  Object Specialist
 Apple Computer, Inc.  20525 Mariani Ave, MS 32E  Cupertino, CA 95014
	    AppleLink:Rosenstein1    domain:lsr@Apple.COM
		UUCP:{sun,voder,nsc,decwrl}!apple!lsr

Technical Details

Message-ID: <7516@apple.Apple.Com>

Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!lll-winken!lll-lcc!pyramid!voder!apple!lsr

References: <gW83I0y00WABsB40x9@andrew.cmu.edu> <4097@husc6.harvard.edu>

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!lll-winken!lll-lcc!pyramid!voder!apple!lsr
From: lsr@Apple.COM (Larry Rosenstein)
Newsgroups: comp.sys.mac
Subject: Re: LSC: booleans != TRUE ??
Message-ID: <7516@apple.Apple.Com>
Date: 1 Mar 88 01:16:53 GMT
References: <gW83I0y00WABsB40x9@andrew.cmu.edu> <4097@husc6.harvard.edu>
Reply-To: lsr@apple.UUCP (Larry Rosenstein)
Organization: Advanced Technology Group, Apple Computer
Lines: 15

Reply to Parent Message