#include "globals.h"SVMFLOAT x_i(const svm_example x, const SVMINT i){  // return x[i] by binary search  SVMINT low=0;  SVMINT high=x.length;  SVMINT med;  SVMFLOAT result;  while(low<high){    med = (low+high)/2;    if(x.example[med].index>=i){      high=med;    }    else{      low=med+1;    };  };  if((high < x.length) && (x.example[high].index==i)){    result = x.example[high].att;  }  else{    result = 0;  };  return result;};SVMFLOAT string2svmfloat(char* s){  // number =~ [+-]?\d+([.]\d+)?([Ee][+-]?\d+)?  int size = 0;  while(s[size] != '\0') size++;  int char_read=0;  SVMFLOAT number=0;  int sign = 1;  // sign  if((size > 0) && ('+' == s[0])){    char_read++;  }  else if((size > 0) && ('-' ==s[0])){    char_read++;    sign = -1;  };  // digits before "."  while((char_read<size) && (s[char_read] >= '0') && (s[char_read] <= '9')){    number=number*10+(s[char_read]-'0');    char_read++;  };  // digits after "."  if((char_read<size) && (('.' == s[char_read]) || (',' == s[char_read]))){    SVMFLOAT factor = 0.1;    char_read++;    while((char_read<size) && (s[char_read] >= '0') && (s[char_read] <= '9')){      number=number+factor*(s[char_read]-'0');      char_read++;      factor *= 0.1;    };      };  if(sign<0){    number = -number;  };  // exponent  if((char_read<size) && (('e' == s[char_read]) || ('E' == s[char_read]))){    sign = 1;    char_read++;    if((char_read<size) && ('+' == s[char_read])){      char_read++;    }    else if((char_read<size) && ('-' == s[char_read])){      char_read++;      sign = -1;    };    int exponent=0;    while((char_read<size) && (s[char_read] >= '0') && (s[char_read] <= '9')){      exponent = exponent*10+(s[char_read]-'0');      char_read++;    };    number = number*pow(10,sign*exponent);  };  if(char_read<size){    throw no_number_exception();  };  return number;};long get_time(){#ifdef use_time  struct tms the_time;  times(&the_time);  return(the_time.tms_utime);#else  return 0;#endif};general_exception::general_exception(char* the_error){ error_msg = the_error; }general_exception::general_exception(){ error_msg = ""; }read_exception::read_exception(char* the_error){ error_msg = the_error; }read_exception::read_exception(){ error_msg = ""; }ostream& operator<< (ostream& data_stream, example_format& format){  if(format.sparse){    data_stream<<"sparse";  }  else{    for(int i=1;i<=5;i++){      if(format.where_x == i){	data_stream<<"x";      }      else if(format.where_y == i){	data_stream<<"y";      }      else if (format.where_alpha == i){	data_stream<<"a";      };    };  };  return data_stream;};