old_contents: # coding: utf-8
  
  
  #$ header function f(double, double) results(double)
  def f(u,v):
      t = u - v
      return t
  
  #$ header g(double, double) results(double, double)
  def g(x,v):
      m = x - v
      t =  2.0 * m
      z =  2.0 * t
      return t, z
  
  #$ header fi(int, int) results(int)
  def fi(x, n=5):
      y = x+1+n
      return y
  
  x1 = 1.0
  y1 = 2.0
  
  w = 2 * f(x1,y1) + 1.0
  
  z, t = g(x1,w)
  
  i = 1
  j = 3
  k = fi(i, j)
  k = fi(i)
  
  print(z)
  print(t)
  
new_contents: # coding: utf-8
  
  
  #$ header function f(double, double) results(double)
  def f(u,v):
      t = u - v
      return t
  
  #$ header g(double, double) results(double, double)
  def g(x,v):
      m = x - v
      t =  2.0 * m
      z =  2.0 * t
      return t, z
  
  #$ header fi(int, int) results(int)
  def fi(x, n=5):
      y = x+1+n
      return y
  
  def f_pass():
      pass
  
  x1 = 1.0
  y1 = 2.0
  
  w = 2 * f(x1,y1) + 1.0
  
  z, t = g(x1,w)
  
  i = 1
  j = 3
  k = fi(i, j)
  k = fi(i)
  
  f_pass()
  
  print(z)
  print(t)
  
subject: add pass test