@sandeep
number which is a power of 2 only one bit will be set.
number -1 : all the bits except the one which was set at num with be 1
so num & num-1 will be 0 coz of bitwise and
On Sat, Aug 20, 2011 at 4:18 PM, SANDEEP CHUGH <sandeep.aa...@gmail.com>wrote:
> @sukran explain plz
>
> On Sat, Aug 20, 2011 at 4:16 PM, sukran dhawan <sukrandha...@gmail.com>wrote:
>
>> one more condition is required
>>
>> if(num != 0 && !( num & (num-1))
>>
>> On Sat, Aug 20, 2011 at 4:04 PM, Sanjay Rajpal <srn...@gmail.com> wrote:
>>
>>> if(!(x & x-1)) printf("No. is power of 2");
>>>
>>>
>>> Sanju
>>> :)
>>>
>>>
>>>
>>> On Sat, Aug 20, 2011 at 3:32 AM, Abhishek Yadav <
>>> algowithabhis...@gmail.com> wrote:
>>>
>>>> Give a one-line C expression to test whether a number is a power of 2.
>>>>
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