code: def sin_diff(x, xp):
      """d = sin(x - x')"""
      from numpy import sin
  
      return sin(x - xp)
  
imports: import numpy
  from pathos.helpers import freeze_support, shutdown
  from pathos.pools import ProcessPool
  from pathos.pools import ParallelPool
  from pathos.pools import ThreadPool
label_desc: Use image node_id 1 for calling a global function with example usage: sin_diff(x, xp) and returns: sin