gcc/ada/s-exngen.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUNTIME COMPONENTS                          --
   4 --                                                                          --
   5 --                       S Y S T E M . E X N _ G E N                        --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --                            $Revision: 1.6 $                              --
  10 --                                                                          --
  11 --     Copyright (C) 1992,1993,1994,1995 Free Software Foundation, Inc.     --
  12 --                                                                          --
  13 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  14 -- terms of the  GNU General Public License as published  by the Free Soft- --
  15 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  16 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  17 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  18 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  19 -- for  more details.  You should have  received  a copy of the GNU General --
  20 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  21 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  22 -- MA 02111-1307, USA.                                                      --
  23 --                                                                          --
  24 -- As a special exception,  if other files  instantiate  generics from this --
  25 -- unit, or you link  this unit with other files  to produce an executable, --
  26 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  27 -- covered  by the  GNU  General  Public  License.  This exception does not --
  28 -- however invalidate  any other reasons why  the executable file  might be --
  29 -- covered by the  GNU Public License.                                      --
  30 --                                                                          --
  31 -- GNAT was originally developed  by the GNAT team at  New York University. --
  32 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
  33 --                                                                          --
  34 ------------------------------------------------------------------------------
  35
  36 --  This package contains the generic functions which are instantiated with
  37 --  predefined integer and real types to generate the runtime exponentiation
  38 --  functions called by expanded code generated by Expand_Op_Expon. This
  39 --  version of the package contains routines that are compiled with overflow
  40 --  checks suppressed, so they are called for exponentiation operations which
  41 --  do not require overflow checking
  42
  43 package System.Exn_Gen is
  44 pragma Pure (System.Exn_Gen);
  45
  46    --  Exponentiation for float types (checks off)
  47
  48    generic
  49       type Type_Of_Base is digits <>;
  50
  51    function Exn_Float_Type
  52      (Left  : Type_Of_Base;
  53       Right : Integer)
  54       return  Type_Of_Base;
  55
  56    --  Exponentiation for signed integer base
  57
  58    generic
  59       type Type_Of_Base is range <>;
  60
  61    function Exn_Integer_Type
  62      (Left  : Type_Of_Base;
  63       Right : Natural)
  64       return  Type_Of_Base;
  65
  66 end System.Exn_Gen;