class interface P_SYSTEM
feature(s) from P_SYSTEM
   floor (in: DOUBLE): INTEGER
      --  DOUBLE > INTEGER.
   double_to_real (in: DOUBLE): REAL
      --  DOUBLE > REAL.
   code_to_char (code: INTEGER): CHARACTER
      --  CHARACTER from code.
feature(s) from P_SYSTEM
   --  Exceptions
   raise_exception (nm: STRING)
      -- 
      require
         ok: nm /= Void
      ensure
         pseudo_exception: false
end of P_SYSTEM