code: def pi(nsteps):
      sum, step = 0.0, 1.0 / nsteps
      "omp parallel for reduction(+:sum) private(x)"
      for i in range(nsteps):
          x = (i - 0.5) * step
          sum += 4.0 / (1.0 + x**2)
      return step * sum
  
label_desc: Use image node_id 1 for calling a global function with example usage: pi(nsteps) and returns: unknown