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--           Copyright (C) 1992-2000 Free Software Foundation, Inc.         --
10--                                                                          --
11-- GNAT is free software;  you can  redistribute it  and/or modify it under --
12-- terms of the  GNU General Public License as published  by the Free Soft- --
13-- ware  Foundation;  either version 2,  or (at your option) any later ver- --
14-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
15-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
16-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
17-- for  more details.  You should have  received  a copy of the GNU General --
18-- Public License  distributed with GNAT;  see file COPYING.  If not, write --
19-- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
20-- MA 02111-1307, USA.                                                      --
21--                                                                          --
22-- As a special exception,  if other files  instantiate  generics from this --
23-- unit, or you link  this unit with other files  to produce an executable, --
24-- this  unit  does not  by itself cause  the resulting  executable  to  be --
25-- covered  by the  GNU  General  Public  License.  This exception does not --
26-- however invalidate  any other reasons why  the executable file  might be --
27-- covered by the  GNU Public License.                                      --
28--                                                                          --
29-- GNAT was originally developed  by the GNAT team at  New York University. --
30-- Extensive contributions were provided by Ada Core Technologies Inc.      --
31--                                                                          --
32------------------------------------------------------------------------------
33
34--  Contains the routine for computing the image in based format of signed and
35--  unsigned integers whose size <= Integer'Size for use by Text_IO.Integer_IO
36--  and Text_IO.Modular_IO.
37
38with System.Unsigned_Types;
39
40package System.Img_BIU is
41pragma Pure (Img_BIU);
42
43   procedure Set_Image_Based_Integer
44     (V : Integer;
45      B : Natural;
46      W : Integer;
47      S : out String;
48      P : in out Natural);
49   --  Sets the signed image of V in based format, using base value B (2..16)
50   --  starting at S (P + 1), updating P to point to the last character stored.
51   --  The image includes a leading minus sign if necessary, but no leading
52   --  spaces unless W is positive, in which case leading spaces are output if
53   --  necessary to ensure that the output string is no less than W characters
54   --  long. The caller promises that the buffer is large enough and no check
55   --  is made for this. Constraint_Error will not necessarily be raised if
56   --  this is violated, since it is perfectly valid to compile this unit with
57   --  checks off.
58
59   procedure Set_Image_Based_Unsigned
60     (V : System.Unsigned_Types.Unsigned;
61      B : Natural;
62      W : Integer;
63      S : out String;
64      P : in out Natural);
65   --  Sets the unsigned image of V in based format, using base value B (2..16)
66   --  starting at S (P + 1), updating P to point to the last character stored.
67   --  The image includes no leading spaces unless W is positive, in which case
68   --  leading spaces are output if necessary to ensure that the output string
69   --  is no less than W characters long. The caller promises that the buffer
70   --  is large enough and no check is made for this. Constraint_Error will not
71   --  necessarily be raised if this is violated, since it is perfectly valid
72   --  to compile this unit with checks off).
73
74end System.Img_BIU;
75