------------------------------------------------------------------------------ -- -- -- GNAT RUNTIME COMPONENTS -- -- -- -- S Y S T E M . I M G _ L L B -- -- -- -- B o d y -- -- -- -- Copyright (C) 1992,1993,1994,1995 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 2, 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. See the GNU General Public License -- -- for more details. You should have received a copy of the GNU General -- -- Public License distributed with GNAT; see file COPYING. If not, write -- -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- -- MA 02111-1307, USA. -- -- -- -- As a special exception, if other files instantiate generics from this -- -- unit, or you link this unit with other files to produce an executable, -- -- this unit does not by itself cause the resulting executable to be -- -- covered by the GNU General Public License. This exception does not -- -- however invalidate any other reasons why the executable file might be -- -- covered by the GNU Public License. -- -- -- -- 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;