#ifndef _LIBSVM_H#define _LIBSVM_H#ifdef __cplusplusextern "C" {#endif  typedef float Xfloat;  typedef float Qfloat;  typedef signed char schar;  struct svm_node  {    int index;    double value;  };/*   struct svm_problem *//*   { *//*     int l; *//*     double *y; *//*     struct svm_node **x; *//*   }; */  struct svm_problem  {    int l;    double *y;    Xfloat **x;    int **nz_idx;    int *x_len;    int max_idx;  };  enum { C_SVC, NU_SVC, ONE_CLASS, EPSILON_SVR, NU_SVR };	/* svm_type */  enum { LINEAR, POLY, RBF, SIGMOID };	/* kernel_type */  struct svm_parameter  {    int svm_type;    int kernel_type;    //   double degree;	/* for poly */    int degree;	/* for poly */    double gamma;	/* for poly/rbf/sigmoid */    double coef0;	/* for poly/sigmoid */    /* these are for training only */    double cache_size; /* in MB */    double eps;	/* stopping criteria */    double C;	/* for C_SVC, EPSILON_SVR and NU_SVR */    int nr_weight;		/* for C_SVC */    int *weight_label;	/* for C_SVC */    double* weight;		/* for C_SVC */    double nu;	/* for NU_SVC, ONE_CLASS, and NU_SVR */    double p;	/* for EPSILON_SVR */    int shrinking;	/* use the shrinking heuristics */    int probability; /* do probability estimates */    int o;    int q;  };  struct svm_model *svm_train(const struct svm_problem *prob, 			      const struct svm_parameter *param);  void svm_cross_validation(const struct svm_problem *prob, 			    const struct svm_parameter *param, 			    int nr_fold, double *target);  int svm_save_model(const char *model_file_name, 		     const struct svm_model *model);  struct svm_model *svm_load_model(const char *model_file_name);  int svm_get_svm_type(const struct svm_model *model);  int svm_get_nr_class(const struct svm_model *model);  void svm_get_labels(const struct svm_model *model, int *label);  double svm_get_svr_probability(const struct svm_model *model);  void svm_predict_values(const struct svm_model *model, const Xfloat *x, 			  const int *nz_x, const int lx, double* dec_values);  double svm_predict(const struct svm_model *model, const Xfloat *x, 		     const int *nz_x, const int lx);  double svm_predict_probability(const struct svm_model *model, 				 const Xfloat *x, const int *nz_x, 				 const int lx, double* prob_estimates);  void svm_destroy_model(struct svm_model *model);  void svm_destroy_param(struct svm_parameter *param);  const char *svm_check_parameter(const struct svm_problem *prob, 				  const struct svm_parameter *param);  int svm_check_probability_model(const struct svm_model *model);#ifdef __cplusplus}#endif#endif /* _LIBSVM_H */