class_docstr: Test the 2-dimensional rosenbrock optimization problem.
class_docstr_tok: ["Test","the","2-dimensional","rosenbrock","optimization","problem","."]
code: def test_PowellDirectionalSolver_CRT(self):
      from mystic.solvers import PowellDirectionalSolver
      from mystic.termination import CandidateRelativeTolerance as CRT
  
      self.solver = PowellDirectionalSolver(self.ND)
      self.term = CRT()
      self._run_solver(early_terminate=True)
  
imports: import sys
  from io import StringIO
  import unittest
  from math import *
  from mystic.math import almostEqual
label_desc: Use image node_id 18 for calling the TestRosenbrock obj's underlying member method code with example usage: obj.test_PowellDirectionalSolver_CRT() without return types