exprtk_recursive_fibonacci.cpp File Reference

#include <string>
#include "exprtk.hpp"

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Functions
template<typename T >
void	recursive_fibonacci_example ()
int	main ()

Function Documentation

main()

int main

(

)

Definition at line 74 of file exprtk_recursive_fibonacci.cpp.

{
   recursive_fibonacci_example<double>();
   return 0;
}

recursive_fibonacci_example()

template<typename T >

void recursive_fibonacci_example

(

)

Definition at line 26 of file exprtk_recursive_fibonacci.cpp.

{
   typedef exprtk::symbol_table<T>         symbol_table_t;
   typedef exprtk::expression<T>           expression_t;
   typedef exprtk::parser<T>               parser_t;
   typedef exprtk::function_compositor<T>  compositor_t;
   typedef typename compositor_t::function function_t;
 
   exprtk::rtl::io::package<T> io_package;
 
   symbol_table_t symbol_table;
 
   symbol_table.add_package(io_package);
 
   compositor_t compositor(symbol_table);
 
   compositor.add(
      function_t("fibonacci")
      .var("n")
      .expression
      ( " (n < 2) ? n : fibonacci(n - 1) + fibonacci(n - 2); " ));
 
 
   const std::string fibonacci_program =
      " const var n := 35;                  "
      "                                     "
      " for (var i := 0; i <= n; i += 1)    "
      " {                                   "
      "    var fib_i := fibonacci(i);       "
      "    println('fib(',i,') = ', fib_i); "
      " }                                   ";
 
   expression_t expression;
   expression.register_symbol_table(symbol_table);
 
   parser_t parser;
   parser.compile(fibonacci_program,expression);
 
   exprtk::timer timer;
   timer.start();
 
   expression.value();
 
   timer.stop();
 
   printf("Total time: %8.4fsec\n",timer.time());
}

References exprtk::timer::start(), exprtk::timer::stop(), and exprtk::timer::time().

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