text: # -*- encoding: utf-8 -*-
  # Module iacloseth
  
  from numpy import *
  
  def iacloseth(f, b=None):
      from ia870.iasubm import iasubm
      from ia870.iaclose import iaclose
      from ia870.iasecross import iasecross
      if b is None:
          b = iasecross()
  
      y = iasubm( iaclose(f,b), f)
      return y
  
  