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@(@\newcommand{\B}[1]{ {\bf #1} } \newcommand{\R}[1]{ {\rm #1} }@)@
C++: a_double Properties: Example and Test
# include <cstdio>
# include <string>
# include <cppad/swig/cppad_swig.hpp>

bool a_double_property_xam(void) {
     using cppad_swig::a_double;
     using cppad_swig::vec_bool;
     using cppad_swig::vec_int;
     using cppad_swig::vec_double;
     using cppad_swig::vec_a_double;
     using cppad_swig::a_fun;
     using cppad_swig::sparse_rc;
     using cppad_swig::sparse_rcv;
     using cppad_swig::sparse_jac_work;
     using cppad_swig::sparse_hes_work;
     using std::string;
     //
     // initialize return variable
     bool ok = true;
     //------------------------------------------------------------------------
     a_double three = cppad_swig::a_double(3.0);
     //
     ok = ok && three.value()   == 3.0;
     ok = ok && three.parameter();
     ok = ok && ! three.variable();
     //
     // near_equal
     a_double r3 = three.sqrt() ;
     ok = ok && three.near_equal( r3 * r3) ;;
     //
     return( ok );
}

Input File: build/lib/example/cplusplus/a_double_property_xam.cpp