------------------------------------------------------------------------------
-- --
--- GNAT RUNTIME COMPONENTS --
+-- GNAT RUN-TIME COMPONENTS --
-- --
-- A D A . W I D E _ T E X T _ I O . D E C I M A L _ A U X --
-- --
-- B o d y --
-- --
--- --
--- Copyright (C) 1992-2001 Free Software Foundation, Inc. --
+-- 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 2, or (at your option) any later ver- --
+-- 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. 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. --
+-- 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. --
-- --
--- 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. --
+-- 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. --
--- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
+-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-------------
function Get_Dec
- (File : File_Type;
- Width : Field;
- Scale : Integer)
- return Integer
+ (File : File_Type;
+ Width : Field;
+ Scale : Integer) return Integer
is
Buf : String (1 .. Field'Last);
Ptr : aliased Integer;
-------------
function Get_LLD
- (File : File_Type;
- Width : Field;
- Scale : Integer)
- return Long_Long_Integer
+ (File : File_Type;
+ Width : Field;
+ Scale : Integer) return Long_Long_Integer
is
Buf : String (1 .. Field'Last);
Ptr : aliased Integer;
function Gets_Dec
(From : String;
- Last : access Positive;
- Scale : Integer)
- return Integer
+ Last : not null access Positive;
+ Scale : Integer) return Integer
is
Pos : aliased Integer;
Item : Integer;
function Gets_LLD
(From : String;
- Last : access Positive;
- Scale : Integer)
- return Long_Long_Integer
+ Last : not null access Positive;
+ Scale : Integer) return Long_Long_Integer
is
Pos : aliased Integer;
Item : Long_Long_Integer;
Ptr : Natural := 0;
begin
- if Exp = 0 then
- Fore := To'Length - 1 - Aft;
- else
- Fore := To'Length - 2 - Aft - Exp;
+ -- Compute Fore, allowing for Aft digits and the decimal dot
+
+ Fore := To'Length - Field'Max (1, Aft) - 1;
+
+ -- Allow for Exp and two more for E+ or E- if exponent present
+
+ if Exp /= 0 then
+ Fore := Fore - 2 - Exp;
end if;
+ -- Make sure we have enough room
+
if Fore < 1 then
raise Layout_Error;
end if;
+ -- Do the conversion and check length of result
+
Set_Image_Decimal (Item, Buf, Ptr, Scale, Fore, Aft, Exp);
if Ptr > To'Length then
Ptr : Natural := 0;
begin
- if Exp = 0 then
- Fore := To'Length - 1 - Aft;
- else
- Fore := To'Length - 2 - Aft - Exp;
- end if;
+ Fore :=
+ (if Exp = 0
+ then To'Length - 1 - Aft
+ else To'Length - 2 - Aft - Exp);
if Fore < 1 then
raise Layout_Error;
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