-int str2x(const std::string & str, int & x);
-int str2x(const std::string & str, unsigned & x);
-int str2x(const std::string & str, long & x);
-int str2x(const std::string & str, unsigned long & x);
-#ifndef WIN32
-int str2x(const std::string & str, long long & x);
-int str2x(const std::string & str, unsigned long long & x);
-#endif
-//-----------------------------------------------------------------------------
-const std::string & x2str(unsigned x, std::string & s);
-const std::string & x2str(unsigned long x, std::string & s);
-const std::string & x2str(unsigned long long x, std::string & s);
-//-----------------------------------------------------------------------------