# include <cppad/cppad.hpp>

# include <sstream>  // std::istringstream
# include <string>   // std::string

bool ad_input(void)
{     bool ok = true;

     // create the input string stream is.
     std::string str ("123 456");
     std::istringstream is(str);

     // start and AD<double> recording
     CPPAD_TESTVECTOR( CppAD::AD<double> ) x(1), y(1);
     x[0] = 1.0;
     CppAD::Independent(x);
     CppAD::AD<double> z = x[0];
     ok &= Variable(z);

     // read first number into z and second into y[0]
     is >> z >> y[0];
     ok   &= Parameter(z);
     ok   &= (z == 123.);
     ok   &= Parameter(y[0]);
     ok   &= (y[0] == 456.);
     //
     // terminate recording starting by call to Independent
     CppAD::ADFun<double> f(x, y);

     return ok;
}