gcc/ada/s-imgbiu.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUNTIME COMPONENTS                          --
   4 --                                                                          --
   5 --                       S Y S T E M . I M G _ B I U                        --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --                            $Revision: 1.6 $
  10 --                                                                          --
  11 --           Copyright (C) 1992-2000 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 --  Contains the routine for computing the image in based format of signed and
  37 --  unsigned integers whose size <= Integer'Size for use by Text_IO.Integer_IO
  38 --  and Text_IO.Modular_IO.
  39
  40 with System.Unsigned_Types;
  41
  42 package System.Img_BIU is
  43 pragma Pure (Img_BIU);
  44
  45    procedure Set_Image_Based_Integer
  46      (V : Integer;
  47       B : Natural;
  48       W : Integer;
  49       S : out String;
  50       P : in out Natural);
  51    --  Sets the signed image of V in based format, using base value B (2..16)
  52    --  starting at S (P + 1), updating P to point to the last character stored.
  53    --  The image includes a leading minus sign if necessary, but no leading
  54    --  spaces unless W is positive, in which case leading spaces are output if
  55    --  necessary to ensure that the output string is no less than W characters
  56    --  long. The caller promises that the buffer is large enough and no check
  57    --  is made for this. Constraint_Error will not necessarily be raised if
  58    --  this is violated, since it is perfectly valid to compile this unit with
  59    --  checks off.
  60
  61    procedure Set_Image_Based_Unsigned
  62      (V : System.Unsigned_Types.Unsigned;
  63       B : Natural;
  64       W : Integer;
  65       S : out String;
  66       P : in out Natural);
  67    --  Sets the unsigned image of V in based format, using base value B (2..16)
  68    --  starting at S (P + 1), updating P to point to the last character stored.
  69    --  The image includes no leading spaces unless W is positive, in which case
  70    --  leading spaces are output if necessary to ensure that the output string
  71    --  is no less than W characters long. The caller promises that the buffer
  72    --  is large enough and no check is made for this. Constraint_Error will not
  73    --  necessarily be raised if this is violated, since it is perfectly valid
  74    --  to compile this unit with checks off).
  75
  76 end System.Img_BIU;