Meaning of ## x

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Greetings!

I would like to know the meaning of "S3C2410_UDC_INDEX_ ## x" in the following:

#define S3C2410_UDC_SETIX(x)        \
    __raw_writel(S3C2410_UDC_INDEX_ ## x, S3C2410_UDC_INDEX_REG);

Source: http://lxr.linux.no/source/include/asm-arm/arch-s3c2410/regs-udc.h

Thanks,

Shakthi

--
Shakthi Kannan
http://www.shakthimaan.com

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