Question

How to extract the last N bits of a 32-bit integer in Python

Answer 1

def get_last_N_bits(number, N) :
    mask = (1 << N) - 1;
    
    return number & mask;
 
 
number = 441 # 00000001101-11001
N = 5

print('{:016b}'.format(number))
  
lastNbits = get_last_N_bits(number, N)

print('{:016b}'.format(lastNbits ))
 
   
   
     
'''
run:
 
0000000110111001
0000000000011001
     
'''

 

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