old_contents: # -*- coding: utf-8 -*-
  from .core import roundfloat, roundmode
  from .interval import interval
  import math
  
  
  def vmath():
      def sqrt(self, arg):
          #TODO: Make more better if else
          if arg.__class__.__name__ == "interval":
              answer = arg.math.sqrt(arg)
          else:
              answer = math.sqrt(arg)
          return answer
  
new_contents: # -*- coding: utf-8 -*-
  from .core import roundfloat, roundmode
  from .interval import interval
  import math
  
  
  class vmath:
      def sqrt(arg):
          #TODO: Make more better if else
          if arg.__class__.__name__ == "interval":
              answer = arg.math.sqrt(arg)
          else:
              answer = math.sqrt(arg)
          return answer
  
subject: Fix vmath class