#### Hex to Bin

T
```def hex_to_bin(hex_num: str) -> int:
"""
Convert a hexadecimal value to its binary equivalent
#https://stackoverflow.com/questions/1425493/convert-hex-to-binary
Here, we have used the bitwise right shift operator: >>
Shifts the bits of the number to the right and fills 0 on voids left as a result.
Similar effect as of dividing the number with some power of two.
Example:
a = 10
a >> 1 = 5

>>> hex_to_bin("AC")
10101100
>>> hex_to_bin("9A4")
100110100100
>>> hex_to_bin("   12f   ")
100101111
>>> hex_to_bin("FfFf")
1111111111111111
>>> hex_to_bin("-fFfF")
-1111111111111111
>>> hex_to_bin("F-f")
Traceback (most recent call last):
...
ValueError: Invalid value was passed to the function
>>> hex_to_bin("")
Traceback (most recent call last):
...
ValueError: No value was passed to the function
"""

hex_num = hex_num.strip()
if not hex_num:
raise ValueError("No value was passed to the function")

is_negative = hex_num == "-"
if is_negative:
hex_num = hex_num[1:]

try:
int_num = int(hex_num, 16)
except ValueError:
raise ValueError("Invalid value was passed to the function")

bin_str = ""
while int_num > 0:
bin_str = str(int_num % 2) + bin_str
int_num >>= 1

return int(("-" + bin_str) if is_negative else bin_str)

if __name__ == "__main__":
import doctest

doctest.testmod()
``` © The Algorithms 2022 