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Correctness Tests For Exponential Approximation in Introduction
Running Tests
To build this program and run its correctness tests see cmake_check .
Source `

    // system include files used for I/O
    # include <iostream>

    // memory allocation routine
    # include <cppad/utility/thread_alloc.hpp>

    // test runner
    # include <cppad/utility/test_boolofvoid.hpp>

    // external complied tests
    extern bool exp_2(void);
    extern bool exp_2_cppad(void);
    extern bool exp_2_for1(void);
    extern bool exp_2_for2(void);
    extern bool exp_2_rev1(void);
    extern bool exp_2_rev2(void);
    extern bool exp_2_for0(void);
    extern bool exp_eps(void);
    extern bool exp_eps_cppad(void);
    extern bool exp_eps_for1(void);
    extern bool exp_eps_for2(void);
    extern bool exp_eps_for0(void);
    extern bool exp_eps_rev1(void);
    extern bool exp_eps_rev2(void);

    // main program that runs all the tests
    int main(void)
    {     std::string group = "introduction";
         size_t      width = 20;
         CppAD::test_boolofvoid Run(group, width);

         // This comment is used by OneTest

         // external compiled tests
         Run( exp_2,           "exp_2"          );
         Run( exp_2_cppad,     "exp_2_cppad"    );
         Run( exp_2_for0,      "exp_2_for0"     );
         Run( exp_2_for1,      "exp_2_for1"     );
         Run( exp_2_for2,      "exp_2_for2"     );
         Run( exp_2_rev1,      "exp_2_rev1"     );
         Run( exp_2_rev2,      "exp_2_rev2"     );
         Run( exp_eps,         "exp_eps"        );
         Run( exp_eps_cppad,   "exp_eps_cppad"  );
         Run( exp_eps_for0,    "exp_eps_for0"   );
         Run( exp_eps_for1,    "exp_eps_for1"   );
         Run( exp_eps_for2,    "exp_eps_for2"   );
         Run( exp_eps_rev1,    "exp_eps_rev1"   );
         Run( exp_eps_rev2,    "exp_eps_rev2"   );
         //
         // check for memory leak
         bool memory_ok = CppAD::thread_alloc::free_all();
         // print summary at end
         bool ok = Run.summary(memory_ok);
         //
         return static_cast<int>( ! ok );
    }

`

Input File: introduction/introduction.cpp