Date: Mon, 30 Aug 2010 08:38:25 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: freebsd-usb@freebsd.org Subject: Re: writing usb drivers under 8.x Message-ID: <201008300838.25970.hselasky@c2i.net> In-Reply-To: <4C7B1510.1000601@gmail.com> References: <4C76AB76.4070806@gmail.com> <4C7B1139.4050106@gmail.com> <4C7B1510.1000601@gmail.com>
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On Monday 30 August 2010 04:18:56 Jim Bryant wrote: > well, i can't speak for K&R 1978, as i can't currently find my copy, > but, for a quick brush up, you might want to read pages 80 and 81 from > K&R 2nd Ed. 1988. > > your idea that the preprocessor will evaluate > > #define thirtytwok (1<<15) > For bit 31, you should consider adding a U, so that the values is not treated like a negative value. 1U << 31 --HPS
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