Milind Arun Choudhary wrote:

why bitops.h? coz BIT qualifies for a "bitop" 
& bitops.h is  inclued by kernel.h, hence accessible from every part 
of the tree without mucb efforts
  

I don't think there is anyone who objects to this

c>but it is not sutaible for  those who want to go beyond this limit, 
as they will not be warned 
  

And this is the reason for this overly long thread :)

So all we need is  people to be carefull  before passing anything to BIT
  

This is the difficult thing to do

so  now i think it should be ok to have

#define BIT(nr) (1UL << ((nr) % BITS_PER_LONG))
#define LLBIT(nr) (1ULL << (nr))


thoughts
  

Since you guys seems in agreement about the silenced compiler-warnings, 
then I will rest my case.

Richard Knutsson