code: def _erf_taylor(x):
      # Taylor series assuming 0 <= x <= 1
      x2 = x * x
      s = t = x
      n = 1
      while abs(t) > 1e-17:
          t *= x2 / n
          s -= t / (n + n + 1)
          n += 1
          t *= x2 / n
          s += t / (n + n + 1)
          n += 1
      return 1.1283791670955125739 * s
  
imports: import operator
  import math
  import cmath
label_desc: Use image node_id 20 for calling a global function with example usage: _erf_taylor(x) and returns: unknown