code: def _dilogtable():
      return {
          S.Half: pi**2 / 12 - log(2) ** 2 / 2,
          Integer(2): pi**2 / 4 - I * pi * log(2),
          -(sqrt(5) - 1) / 2: -(pi**2) / 15
          + log((sqrt(5) - 1) / 2) ** 2 / 2,
          -(sqrt(5) + 1) / 2: -(pi**2) / 10
          - log((sqrt(5) + 1) / 2) ** 2,
          (3 - sqrt(5)) / 2: pi**2 / 15 - log((sqrt(5) - 1) / 2) ** 2,
          (sqrt(5) - 1) / 2: pi**2 / 10 - log((sqrt(5) - 1) / 2) ** 2,
          I: I * S.Catalan - pi**2 / 48,
          -I: -I * S.Catalan - pi**2 / 48,
          1 - I: pi**2 / 16 - I * S.Catalan - pi * I / 4 * log(2),
          1 + I: pi**2 / 16 + I * S.Catalan + pi * I / 4 * log(2),
          (1 - I) / 2: -log(2) ** 2 / 8
          + pi * I * log(2) / 8
          + 5 * pi**2 / 96
          - I * S.Catalan,
      }
  
imports: from sympy.core.add import Add
  from sympy.core.cache import cacheit
  from sympy.core.function import ArgumentIndexError, expand_mul, Function
  from sympy.core.numbers import pi, I, Integer
  from sympy.core.relational import Eq
  from sympy.core.singleton import S
  from sympy.core.symbol import Dummy
  from sympy.core.sympify import sympify
  from sympy.functions.combinatorial.numbers import bernoulli, factorial, genocchi, harmonic
  from sympy.functions.elementary.complexes import re, unpolarify, Abs, polar_lift
  from sympy.functions.elementary.exponential import log, exp_polar, exp
  from sympy.functions.elementary.integers import ceiling, floor
  from sympy.functions.elementary.miscellaneous import sqrt
  from sympy.functions.elementary.piecewise import Piecewise
  from sympy.polys.polytools import Poly
label_desc: Use image node_id 1 for calling a global function with example usage: _dilogtable() and returns: dict