On 07/24/15 09:02, Ahmed Soliman wrote: > I was working on cleaning up some files in the crypto dirctory using > checkpatch.pl > and I found this strange define in crypto/gf128mul.c > #define xx(p, q) 0x##p##q > It just seems really weird macro and I cant figure out what is it > supposed to do!!
## is defined in any complete C language spec (it's a preprocessor directive). It is used for string concatenation, aka pasting or gluing strings together. google can find lots of references for it if you need more info. -- ~Randy -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
