graph_generator.hpp

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// $Id: graph_generator.hpp,v 1.4 2003/03/25 17:42:00 gottschling Exp $

#ifndef         _graph_generator_include_
#define         _graph_generator_include_


//
// random graph generator for DAGs similar to real program's c-graph
//

#include <vector>

#include "angel_types.hpp"

namespace angel {

void random_statement (int inputs, int expr, const std::vector<double>& p,
                       c_graph_t& statement);

void random_statement_vector (int max_expr, double unary, 
                              std::vector<c_graph_t>& statement_vector);

void stats2block (int inputs, int outputs, const std::vector<c_graph_t>& stats, 
                  c_graph_t& block);

void random_block (int inputs, int outputs, int stats, int max_exp, double unary,
                   c_graph_t& block);

void block2loop (const c_graph_t& block, int loops,
                 c_graph_t& loop);


// Initializes the random generator unless SAME_RANDOM_VALUES is defined
struct random_init_t {
  int dummy;
  random_init_t () : dummy (7) { 
#ifndef SAME_RANDOM_VALUES
    srand (time (0));
#endif
  }
};
  
extern random_init_t random_init_object;

} // namespace angel

#endif  // _graph_generator_include_

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