Path: utzoo!utgpu!news-server.csri.toronto.edu!dgp.toronto.edu!flaps
Newsgroups: comp.lang.c
From: flaps@dgp.toronto.edu (Alan J Rosenthal)
Subject: Re: FALSE and TRUE, (FALSE = -1 ?)
Message-ID: <1990Sep11.121134.23027@jarvis.csri.toronto.edu>
References: <3032@bruce.cs.monash.OZ.AE>
Date: 11 Sep 90 16:11:34 GMT
Lines: 12

alanf@bruce.cs.monash.OZ.AE (Alan Grant Finlay) writes:
>I prefer to use -1 to represent [true] in C.

Assuming you don't modify the compiler, you can't do this consistently as
boolean relations will still return 1.

>Since you can't have a one bit two's complement integer I should probably
>use ~0.

Bad choice, as this will probably count as false on ones complement systems.
(It might not if the compiler can guarantee not to generate you any minus-
zeroes with any operators it provides you.)