code: def sine(middle, pos):
      return (sin((-pi / 2.0) + pi * linear(middle, pos)) + 1.0) / 2.0
  
file_path: catboost/contrib/python/Pillow/py3/PIL/GimpGradientFile.py
imports: from math import log, pi, sin, sqrt
  from ._binary import o8
label_desc: Use image node_id 3 for calling a global function with example usage: sine(middle, pos) and returns: unknown