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-------------------------------------------------------------------------------
--- --
--- GNAT RUN-TIME COMPONENTS --
--- --
--- S Y S T E M . I M G _ L L B --
--- --
--- B o d y --
--- --
--- Copyright (C) 1992-2009 Free Software Foundation, Inc. --
--- --
--- GNAT is free software; you can redistribute it and/or modify it under --
--- terms of the GNU General Public License as published by the Free Soft- --
--- ware Foundation; either version 3, or (at your option) any later ver- --
--- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
--- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
--- or FITNESS FOR A PARTICULAR PURPOSE. --
--- --
--- As a special exception under Section 7 of GPL version 3, you are granted --
--- additional permissions described in the GCC Runtime Library Exception, --
--- version 3.1, as published by the Free Software Foundation. --
--- --
--- You should have received a copy of the GNU General Public License and --
--- a copy of the GCC Runtime Library Exception along with this program; --
--- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
--- <http://www.gnu.org/licenses/>. --
--- --
--- GNAT was originally developed by the GNAT team at New York University. --
--- Extensive contributions were provided by Ada Core Technologies Inc. --
--- --
-------------------------------------------------------------------------------
-
-with System.Unsigned_Types; use System.Unsigned_Types;
-
-package body System.Img_LLB is
-
- ---------------------------------------
- -- Set_Image_Based_Long_Long_Integer --
- ---------------------------------------
-
- procedure Set_Image_Based_Long_Long_Integer
- (V : Long_Long_Integer;
- B : Natural;
- 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_Based_Long_Long_Unsigned
- (Long_Long_Unsigned (V), B, 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;
-
- declare
- pragma Suppress (Overflow_Check);
- pragma Suppress (Range_Check);
- begin
- Set_Image_Based_Long_Long_Unsigned
- (Long_Long_Unsigned (-V), B, 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_Based_Long_Long_Integer;
-
- ----------------------------------------
- -- Set_Image_Based_Long_Long_Unsigned --
- ----------------------------------------
-
- procedure Set_Image_Based_Long_Long_Unsigned
- (V : Long_Long_Unsigned;
- B : Natural;
- W : Integer;
- S : out String;
- P : in out Natural)
- is
- Start : constant Natural := P;
- F, T : Natural;
- BU : constant Long_Long_Unsigned := Long_Long_Unsigned (B);
- Hex : constant array
- (Long_Long_Unsigned range 0 .. 15) of Character :=
- "0123456789ABCDEF";
-
- 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 >= BU then
- Set_Digits (T / BU);
- P := P + 1;
- S (P) := Hex (T mod BU);
- else
- P := P + 1;
- S (P) := Hex (T);
- end if;
- end Set_Digits;
-
- -- Start of processing for Set_Image_Based_Long_Long_Unsigned
-
- begin
-
- if B >= 10 then
- P := P + 1;
- S (P) := '1';
- end if;
-
- P := P + 1;
- S (P) := Character'Val (Character'Pos ('0') + B mod 10);
-
- P := P + 1;
- S (P) := '#';
-
- Set_Digits (V);
-
- P := P + 1;
- S (P) := '#';
-
- -- Add leading spaces if required by width parameter
-
- if P - Start < W then
- F := P;
- P := Start + W;
- 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_Based_Long_Long_Unsigned;
-
-end System.Img_LLB;