/Python/Python convert integer to signed base 2 complement

Python convert integer to signed base 2 complement

def twos_comp(val, bits):
    """compute the 2's complement of int value val"""
    if (val & (1 << (bits - 1))) != 0: # if sign bit is set e.g., 8bit: 128-255
        val = val - (1 << bits)        # compute negative value
    return val                         # return positive value as is
  
binary_string = '1010101010' # or whatever... no '0b' prefix
out = twos_comp(int(binary_string,2), len(binary_string))

-1

Similar codes

0 vote341 views1 answer
Python not equal to symbol
Python
0 vote343 views1 answer
Pandas dataframe select last n columns
Python
6 votes348 views1 answer
Load images pygame
Python
10 votes392 views5 answers
Ordered dictionary python
Python
-1 vote333 views1 answer
Python for print
Python
0 vote335 views1 answer
Networkx draw tripartite graph
Python
0 vote324 views1 answer
Find average with sum and len in python
Python
3 votes329 views5 answers
Get object attributes python
Python
6 votes326 views1 answer
Pd.set_option('display.max_columns', 200) pd.set_option('display.max_rows', 100)
Python
4 votes349 views1 answer
Fixed precision float python
Python