| 1 |
12 |
jlechner |
------------------------------------------------------------------------------
|
| 2 |
|
|
-- --
|
| 3 |
|
|
-- GNAT RUN-TIME COMPONENTS --
|
| 4 |
|
|
-- --
|
| 5 |
|
|
-- S Y S T E M . I M G _ I N T --
|
| 6 |
|
|
-- --
|
| 7 |
|
|
-- B o d y --
|
| 8 |
|
|
-- --
|
| 9 |
|
|
-- Copyright (C) 1992-2005 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, 51 Franklin Street, Fifth Floor, --
|
| 20 |
|
|
-- Boston, MA 02110-1301, 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 |
|
|
package body System.Img_Int is
|
| 35 |
|
|
|
| 36 |
|
|
-------------------
|
| 37 |
|
|
-- Image_Integer --
|
| 38 |
|
|
-------------------
|
| 39 |
|
|
|
| 40 |
|
|
function Image_Integer (V : Integer) return String is
|
| 41 |
|
|
P : Natural;
|
| 42 |
|
|
S : String (1 .. Integer'Width);
|
| 43 |
|
|
|
| 44 |
|
|
begin
|
| 45 |
|
|
if V >= 0 then
|
| 46 |
|
|
P := 1;
|
| 47 |
|
|
S (P) := ' ';
|
| 48 |
|
|
else
|
| 49 |
|
|
P := 0;
|
| 50 |
|
|
end if;
|
| 51 |
|
|
|
| 52 |
|
|
Set_Image_Integer (V, S, P);
|
| 53 |
|
|
return S (1 .. P);
|
| 54 |
|
|
end Image_Integer;
|
| 55 |
|
|
|
| 56 |
|
|
-----------------------
|
| 57 |
|
|
-- Set_Image_Integer --
|
| 58 |
|
|
-----------------------
|
| 59 |
|
|
|
| 60 |
|
|
procedure Set_Image_Integer
|
| 61 |
|
|
(V : Integer;
|
| 62 |
|
|
S : out String;
|
| 63 |
|
|
P : in out Natural)
|
| 64 |
|
|
is
|
| 65 |
|
|
procedure Set_Digits (T : Integer);
|
| 66 |
|
|
-- Set digits of absolute value of T, which is zero or negative. We work
|
| 67 |
|
|
-- with the negative of the value so that the largest negative number is
|
| 68 |
|
|
-- not a special case.
|
| 69 |
|
|
|
| 70 |
|
|
procedure Set_Digits (T : Integer) is
|
| 71 |
|
|
begin
|
| 72 |
|
|
if T <= -10 then
|
| 73 |
|
|
Set_Digits (T / 10);
|
| 74 |
|
|
P := P + 1;
|
| 75 |
|
|
S (P) := Character'Val (48 - (T rem 10));
|
| 76 |
|
|
|
| 77 |
|
|
else
|
| 78 |
|
|
P := P + 1;
|
| 79 |
|
|
S (P) := Character'Val (48 - T);
|
| 80 |
|
|
end if;
|
| 81 |
|
|
end Set_Digits;
|
| 82 |
|
|
|
| 83 |
|
|
-- Start of processing for Set_Image_Integer
|
| 84 |
|
|
|
| 85 |
|
|
begin
|
| 86 |
|
|
if V >= 0 then
|
| 87 |
|
|
Set_Digits (-V);
|
| 88 |
|
|
|
| 89 |
|
|
else
|
| 90 |
|
|
P := P + 1;
|
| 91 |
|
|
S (P) := '-';
|
| 92 |
|
|
Set_Digits (V);
|
| 93 |
|
|
end if;
|
| 94 |
|
|
end Set_Image_Integer;
|
| 95 |
|
|
|
| 96 |
|
|
end System.Img_Int;
|
