dist.h

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#ifndef DIST_H
#define DIST_H
//Weilei Zeng, April 28
 
 
//#include <string> //already inlcuded in itbase.h
//#include <itpp/itbase.h> //already included in itcomm.h
#include <itpp/itcomm.h> //LDPC_Code
//#include <stdio.h>
 
namespace common {
 
  //const int MAX_M=6;//maximum of the length of the complex chain
 
  const int INF=999;
  int min_wt_decoding(itpp::GF2mat C);
 
  int min_wt_decoding(itpp::GF2mat C, itpp::GF2mat G);
 
  int save_dist(int d, char * filename);
 
  int rand_dist(itpp::GF2mat C, int perm_try=10);
 
  int classical_dist(itpp::GF2mat G);
 
 
  itpp::GF2mat nullSpace(itpp::GF2mat G);
 
  itpp::GF2mat getC(itpp::GF2mat G_x,itpp::GF2mat G_z,int flip=0);//return C_x or C_z if flip=1
 
  int quantum_dist_v2(itpp::GF2mat G_x, itpp::GF2mat G_z, int flip=0);//without expectation value
 
  int quantum_dist(itpp::GF2mat G_x, itpp::GF2mat G_z, int dist_expected, int debug, int flip=0);
  //right or x  distance of (G_x,G_z)
  //flip left and right if flip = 1  
 
  int hypergraph_dist(itpp::GF2mat Aj, itpp::GF2mat Ajplus,int dist_expected,int flip=0);
 
 
  //following functions for bp_new, Belief Propagation decoder.
 
 
  int draw_toric_x_error(itpp::bvec error_bits);
 
  int draw_toric_x_error(itpp::bvec error_bits, std::string header);
 
  itpp::bvec find_error(itpp::bvec e_in, itpp::GF2mat H);
 
  itpp::GF2mat get_check_code734(int L);//L=7n    
 
  itpp::GF2mat get_check_code743(int L);//L=7n
  itpp::GF2mat get_check_rept(int L);
 
  itpp::GF2mat get_check(int generator_flag, int L);
 
 
  itpp::LDPC_Code GF2mat_to_LDPC_Code(itpp::GF2mat G);
 
  itpp::LDPC_Code MM_to_LDPC_Code(char * filename);
  
    
 
} //namespace common
 
#endif //#ifndef DIST_H