gcc/ada/s-imglli.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUNTIME COMPONENTS                          --
   4 --                                                                          --
   5 --                       S Y S T E M . I M G _ L L I                        --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --                            $Revision: 1.1.16.1 $
  10 --                                                                          --
  11 --        Copyright (C) 1992,1993,1994 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 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  33 --                                                                          --
  34 ------------------------------------------------------------------------------
  35
  36 package body System.Img_LLI is
  37
  38    -----------------------------
  39    -- Image_Long_Long_Integer --
  40    -----------------------------
  41
  42    function Image_Long_Long_Integer (V : Long_Long_Integer) return String is
  43       P : Natural;
  44       S : String (1 .. Long_Long_Integer'Width);
  45
  46    begin
  47       if V >= 0 then
  48          P := 1;
  49          S (P) := ' ';
  50       else
  51          P := 0;
  52       end if;
  53
  54       Set_Image_Long_Long_Integer (V, S, P);
  55       return S (1 .. P);
  56    end Image_Long_Long_Integer;
  57
  58    ---------------------------------
  59    -- Set_Image_Long_Long_Integer --
  60    ---------------------------------
  61
  62    procedure Set_Image_Long_Long_Integer
  63      (V : Long_Long_Integer;
  64       S : out String;
  65       P : in out Natural)
  66    is
  67       procedure Set_Digits (T : Long_Long_Integer);
  68       --  Set digits of absolute value of T, which is zero or negative. We work
  69       --  with the negative of the value so that the largest negative number is
  70       --  not a special case.
  71
  72       procedure Set_Digits (T : Long_Long_Integer) is
  73       begin
  74          if T <= -10 then
  75             Set_Digits (T / 10);
  76             P := P + 1;
  77             S (P) := Character'Val (48 - (T rem 10));
  78
  79          else
  80             P := P + 1;
  81             S (P) := Character'Val (48 - T);
  82          end if;
  83       end Set_Digits;
  84
  85    --  Start of processing for Set_Image_Long_Long_Integer
  86
  87    begin
  88       if V >= 0 then
  89          Set_Digits (-V);
  90
  91       else
  92          P := P + 1;
  93          S (P) := '-';
  94          Set_Digits (V);
  95       end if;
  96
  97    end Set_Image_Long_Long_Integer;
  98
  99 end System.Img_LLI;