input: from typing import Union
  
  
  def convert_numeric_sign(x: Union[int, float]) -> Union[int, float]:
      """ Convert a positive number to negative or vice versa using the bitwise NOT operator.
      >>> convert_numeric_sign(5)
      -5
      >>> convert_numeric_sign(-5)
      5
      >>> convert_numeric_sign(0)
      0
      """
      if x > 0:
          return ~int(x) + 1
      elif x < 0:
          return ~(int(x) - 1)
      else:
          return x
output:     if x > 0:
          return ~int(x) + 1
      elif x < 0:
          return ~(int(x) - 1)
      else:
          return x