Top "Bitcount" questions

Bit length of a positive integer in Python

1 = 0b1 -> 1 5 = 0b101 -> 3 10 = 0b1010 -> 4 100 = 0b1100100 -> 7 1000 = 0b1111101000 -> 10 … How can I get the …

python bits bitcount
calculate number of bits set in byte

I am interested, which is the optimal way of calculating the number of bits set in byte by this way …

c++ templates bitcount
what's the difference between __builtin_popcountll and_mm_popcnt_u64?

I was trying to how many 1 in 512MB memory and I found two possible methods, _mm_popcnt_u64() and __builtin_…

c gcc bitcount
Counting number of bits: How does this line work ? n=n&(n-1);

I need some explanation how this specific line works. I know that this function counts the number of 1's bits, …

c++ algorithm bitcount