code: def betainc_mpmath_fix(a, b, x1, x2, reg=0):
      from mpmath import betainc, mpf
  
      if x1 == x2:
          return mpf(0)
      else:
          return betainc(a, b, x1, x2, reg)
  
imports: from sympy.core import S
  from sympy.core.function import Function, ArgumentIndexError
  from sympy.core.symbol import Dummy
  from sympy.functions.special.gamma_functions import gamma, digamma
  from sympy.functions.combinatorial.numbers import catalan
  from sympy.functions.elementary.complexes import conjugate
label_desc: Use image node_id 1 for calling a global function with example usage: betainc_mpmath_fix(a, b, x1, x2, reg) and returns: mpf, betainc