File : s-imgwiu.ads


     ------------------------------------------------------------------------------
     --                                                                          --
     --                         GNAT RUNTIME COMPONENTS                          --
     --                                                                          --
   5 --                       S Y S T E M . I M G _ W I U                        --
     --                                                                          --
     --                                 S p e c                                  --
     --                                                                          --
     --                            $Revision: 1.5 $
  10 --                                                                          --
     --           Copyright (C) 1992-2000 Free Software Foundation, Inc.         --
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     -- GNAT is free software;  you can  redistribute it  and/or modify it under --
     -- terms of the  GNU General Public License as published  by the Free Soft- --
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     -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
     -- 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 --
     -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
     -- MA 02111-1307, USA.                                                      --
     --                                                                          --
     -- 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, --
     -- this  unit  does not  by itself cause  the resulting  executable  to  be --
     -- covered  by the  GNU  General  Public  License.  This exception does not --
     -- however invalidate  any other reasons why  the executable file  might be --
     -- covered by the  GNU Public License.                                      --
  30 --                                                                          --
     -- GNAT was originally developed  by the GNAT team at  New York University. --
     -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
     --                                                                          --
     ------------------------------------------------------------------------------
  35 
     --  Contains the routine for computing the image  of signed and unsigned
     --  integers whose size <= Integer'Size for use by Text_IO.Integer_IO
     --  and Text_IO.Modular_IO.
     
  40 with System.Unsigned_Types;
     
     package System.Img_WIU is
     pragma Pure (Img_WIU);
     
  45    procedure Set_Image_Width_Integer
          (V : Integer;
           W : Integer;
           S : out String;
           P : in out Natural);
  50    --  Sets the signed image of V in decimal format, starting at S (P + 1),
        --  updating P to point to the last character stored. The image includes
        --  a leading minus sign if necessary, but no leading spaces unless W is
        --  positive, in which case leading spaces are output if necessary to ensure
        --  that the output string is no less than W characters long. The caller
  55    --  promises that the buffer is large enough and no check is made for this.
        --  Constraint_Error will not necessarily be raised if this is violated,
        --  since it is perfectly valid to compile this unit with checks off.
     
        procedure Set_Image_Width_Unsigned
  60      (V : System.Unsigned_Types.Unsigned;
           W : Integer;
           S : out String;
           P : in out Natural);
        --  Sets the unsigned image of V in decimal format, starting at S (P + 1),
  65    --  updating P to point to the last character stored. The image includes no
        --  leading spaces unless W is positive, in which case leading spaces are
        --  output if necessary to ensure that the output string is no less than
        --  W characters long. The caller promises that the buffer is large enough
        --  and no check is made for this. Constraint_Error will not necessarily be
  70    --  raised if this is violated, since it is perfectly valid to compile this
        --  unit with checks off.
     
     end System.Img_WIU;