Re: some defines I couldnt understand '_IOC_NONE 1U'

Hello, its an unsigned constant. david On Sat, Jun 18, 2011 at 06:39:45PM +0300, Daniel Redway wrote:

Hello

I dont understand what means 'U' character. I found this defines in asm/ioctl.h file. Thanks

#define _IOC_NONE 1U #define _IOC_READ 2U #define _IOC_WRITE 4U

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