Function vector_randu

exprtk_simple_example_19.cpp:83–125

template <typename T>
void vector_randu()
{
   typedef exprtk::symbol_table<T> symbol_table_t;
   typedef exprtk::expression<T>   expression_t;
   typedef exprtk::parser<T>       parser_t;

   const std::string vecrandu_program =
      " var noise[6] := [0];                          "
      "                                               "
      " if (randu(noise,0,5) == false)                "
      " {                                             "
      "    println('Failed to generate noise');       "
      "    return [false];                            "
      " };                                            "
      "                                               "
      " var noisy[noise[]] := signal + (noise - 1/2); "
      "                                               "
      " for (var i := 0; i < noisy[]; i += 1)         "
      " {                                             "
      "    println('noisy[',i,'] = ', noisy[i]);      "
      " };                                            "
      "                                               "
      " println('avg: ', avg(noisy));                 "
      "                                               ";

   T signal[] = { T(1.1), T(2.2), T(3.3), T(4.4), T(5.5), T(6.6), T(7.7) };

   exprtk::rtl::io::println<T> println;
   randu<T>                    randu;

   symbol_table_t symbol_table;
   symbol_table.add_vector  ("signal" , signal );
   symbol_table.add_function("println", println);
   symbol_table.add_function("randu"  , randu  );

   expression_t expression;
   expression.register_symbol_table(symbol_table);

   parser_t parser;
   parser.compile(vecrandu_program,expression);

   expression.value();
}

int main()
{