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- ------------------------------------------------------------------------------
- -- --
- -- GNAT RUNTIME COMPONENTS --
- -- --
- -- S Y S T E M . I M G _ L L W --
- -- --
- -- B o d y --
- -- --
- -- $Revision: 1.2 $ --
- -- --
- -- Copyright (c) 1992,1993,1994 NYU, All Rights Reserved --
- -- --
- -- The GNAT library is free software; you can redistribute it and/or modify --
- -- it under terms of the GNU Library General Public License as published by --
- -- the Free Software Foundation; either version 2, or (at your option) any --
- -- later version. The GNAT library is distributed in the hope that it will --
- -- be useful, but WITHOUT ANY WARRANTY; without even the implied warranty --
- -- of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU --
- -- Library General Public License for more details. You should have --
- -- received a copy of the GNU Library General Public License along with --
- -- the GNAT library; see the file COPYING.LIB. If not, write to the Free --
- -- Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. --
- -- --
- ------------------------------------------------------------------------------
-
- with System.Unsigned_Types; use System.Unsigned_Types;
-
- package body System.Img_LLW is
-
- ---------------------------------------
- -- Set_Image_Width_Long_Long_Integer --
- ---------------------------------------
-
- procedure Set_Image_Width_Long_Long_Integer
- (V : Long_Long_Integer;
- W : Integer;
- S : out String;
- P : in out Natural)
- is
- Start : Natural;
-
- begin
- -- Positive case can just use the unsigned circuit directly
-
- if V >= 0 then
- Set_Image_Width_Long_Long_Unsigned
- (Long_Long_Unsigned (V), W, S, P);
-
- -- Negative case has to set a minus sign. Note also that we have to be
- -- careful not to generate overflow with the largest negative number.
-
- else
- P := P + 1;
- S (P) := ' ';
- Start := P;
-
- begin
- pragma Suppress (Overflow_Check);
- pragma Suppress (Range_Check);
- Set_Image_Width_Long_Long_Unsigned
- (Long_Long_Unsigned (-V), W - 1, S, P);
- end;
-
- -- Set minus sign in last leading blank location. Because of the
- -- code above, there must be at least one such location.
-
- while S (Start + 1) = ' ' loop
- Start := Start + 1;
- end loop;
-
- S (Start) := '-';
- end if;
-
- end Set_Image_Width_Long_Long_Integer;
-
- ----------------------------------------
- -- Set_Image_Width_Long_Long_Unsigned --
- ----------------------------------------
-
- procedure Set_Image_Width_Long_Long_Unsigned
- (V : Long_Long_Unsigned;
- W : Integer;
- S : out String;
- P : in out Natural)
- is
- Start : constant Natural := P;
- F, T : Natural;
-
- procedure Set_Digits (T : Long_Long_Unsigned);
- -- Set digits of absolute value of T
-
- procedure Set_Digits (T : Long_Long_Unsigned) is
- begin
- if T >= 10 then
- Set_Digits (T / 10);
- P := P + 1;
- S (P) := Character'Val (T mod 10 + Character'Pos ('0'));
- else
- P := P + 1;
- S (P) := Character'Val (T + Character'Pos ('0'));
- end if;
- end Set_Digits;
-
- -- Start of processing for Set_Image_Width_Long_Long_Unsigned
-
- begin
- Set_Digits (V);
-
- -- Add leading spaces if required by width parameter
-
- if P - Start < W then
- F := P;
- P := P + (W - (P - Start));
- T := P;
-
- while F > Start loop
- S (T) := S (F);
- T := T - 1;
- F := F - 1;
- end loop;
-
- for J in Start + 1 .. T loop
- S (J) := ' ';
- end loop;
- end if;
-
- end Set_Image_Width_Long_Long_Unsigned;
-
- end System.Img_LLW;
-