FParserAutodiffTest::ADTest Class Reference

Public Member Functions
	ADTest (const std::string &_func, double _min, double _max, double _dx=1e-6, double _reltol=1e-5, int _steps=20, double _abstol=1e-10)
bool	run ()

Private Attributes
std::string	func
double	min
double	max
double	dx
double	reltol
double	abstol
int	steps
FunctionParserAD	F
FunctionParserAD	dF
FunctionParserAD	dFopt
FunctionParserAD	dFaopt

Detailed Description

Definition at line 18 of file autodiff.C.

Constructor & Destructor Documentation

ADTest()

FParserAutodiffTest::ADTest::ADTest ( const std::string &  _func, double  _min, double  _max, double  _dx = 1e-6, double  _reltol = 1e-5, int  _steps = 20, double  _abstol = 1e-10  )

inline

Definition at line 20 of file autodiff.C.

                                                                           :
      func(_func),
      min(_min),
      max(_max),
      dx(_dx),
      reltol(_reltol),
      abstol(_abstol),
      steps(_steps)
    {
      CPPUNIT_ASSERT_MESSAGE ("Failed to parse test function", F.Parse(func, "x") == -1);
      dF.Parse(func, "x");
      dFopt.Parse(func, "x");
      dFaopt.Parse(func, "x");
 
      CPPUNIT_ASSERT_MESSAGE ("Failed to take derivative of function", dF.AutoDiff("x") == -1);
 
      dFopt.Optimize();
      CPPUNIT_ASSERT_MESSAGE ("Failed to take derivative of optimized function", dFopt.AutoDiff("x") == -1);
 
      dFaopt.SetADFlags(FunctionParserAD::ADAutoOptimize, true);
      CPPUNIT_ASSERT_MESSAGE ("Failed to take derivative of auto-optimized function", dFaopt.AutoDiff("x") == -1);
    }

References dF, dFaopt, dFopt, F, and func.

Member Function Documentation

run()

bool FParserAutodiffTest::ADTest::run ( )

inline

Definition at line 45 of file autodiff.C.

    {
      double x1, x2, vdF, vF1, vF2, fd;
      for (double x = min; x <= max; x += (max-min) / double(steps))
        {
          x1 = x - dx/2.0;
          x2 = x + dx/2.0;
 
          vF1 = F.Eval(&x1);
          vF2 = F.Eval(&x2);
          fd = (vF2-vF1) / dx;
 
          // CPPUNIT_ASSERT(std::abs(fd - vdF) > tol)
          // CPPUNIT_ASSERT(std::abs(fd - vdFopt) > tol)
          vdF = dF.Eval(&x);
          if (std::abs(vdF) > abstol && std::abs((fd - vdF)/vdF) > reltol && std::abs(fd - vdF)> abstol)
            {
              std::cout << "Error in " << func << ": " << fd << "!=" << vdF << " at x=" << x << '\n';
              return false;
            }
 
          vdF = dFopt.Eval(&x);
          if (std::abs(vdF) > abstol && std::abs((fd - vdF)/vdF) > reltol && std::abs(fd - vdF)> abstol)
            {
              std::cout << "Error in opt " << func << ": " << fd << "!=" << vdF << " at x=" << x << '\n';
              return false;
            }
 
          vdF = dFaopt.Eval(&x);
          if (std::abs(vdF) > abstol && std::abs((fd - vdF)/vdF) > reltol && std::abs(fd - vdF)> abstol)
            {
              std::cout << "Error in auto opt " << func << ": " << fd << "!=" << vdF << " at x=" << x << '\n';
              return false;
            }
        }
 
      return true;
    }

References abstol, dF, dFaopt, dFopt, dx, F, func, max, min, reltol, and steps.

Member Data Documentation

abstol

double FParserAutodiffTest::ADTest::abstol

private

Definition at line 86 of file autodiff.C.

Referenced by run().

dF

FunctionParserAD FParserAutodiffTest::ADTest::dF

private

Definition at line 89 of file autodiff.C.

Referenced by ADTest(), and run().

dFaopt

FunctionParserAD FParserAutodiffTest::ADTest::dFaopt

private

Definition at line 89 of file autodiff.C.

Referenced by ADTest(), and run().

dFopt

FunctionParserAD FParserAutodiffTest::ADTest::dFopt

private

Definition at line 89 of file autodiff.C.

Referenced by ADTest(), and run().

dx

double FParserAutodiffTest::ADTest::dx

private

Definition at line 86 of file autodiff.C.

Referenced by run().

F

FunctionParserAD FParserAutodiffTest::ADTest::F

private

Definition at line 89 of file autodiff.C.

Referenced by ADTest(), and run().

func

std::string FParserAutodiffTest::ADTest::func

private

Definition at line 85 of file autodiff.C.

Referenced by ADTest(), and run().

max

double FParserAutodiffTest::ADTest::max

private

Definition at line 86 of file autodiff.C.

Referenced by run().

min

double FParserAutodiffTest::ADTest::min

private

Definition at line 86 of file autodiff.C.

Referenced by run().

reltol

double FParserAutodiffTest::ADTest::reltol

private

Definition at line 86 of file autodiff.C.

Referenced by run().

steps

int FParserAutodiffTest::ADTest::steps

private

Definition at line 87 of file autodiff.C.

Referenced by run().

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The documentation for this class was generated from the following file:

• tests/fparser/autodiff.C