lines 56-64 of file: example/cplusplus/a_double_unary_fun_xam.cpp {xrst_begin a_double_unary_fun_xam.cpp} C++: a_double Unary Functions with AD Result: Example and Test ############################################################## {xrst_literal // BEGIN SOURCE // END SOURCE } {xrst_end a_double_unary_fun_xam.cpp}