1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
5 -- A D A . W I D E _ W I D E _ T E X T _ I O . F L O A T _ A U X --
9 -- Copyright (C) 1992-2005 Free Software Foundation, Inc. --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 2, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
20 -- MA 02111-1307, USA. --
22 -- As a special exception, if other files instantiate generics from this --
23 -- unit, or you link this unit with other files to produce an executable, --
24 -- this unit does not by itself cause the resulting executable to be --
25 -- covered by the GNU General Public License. This exception does not --
26 -- however invalidate any other reasons why the executable file might be --
27 -- covered by the GNU Public License. --
29 -- GNAT was originally developed by the GNAT team at New York University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
32 ------------------------------------------------------------------------------
34 with Ada.Wide_Wide_Text_IO.Generic_Aux; use Ada.Wide_Wide_Text_IO.Generic_Aux;
36 with System.Img_Real; use System.Img_Real;
37 with System.Val_Real; use System.Val_Real;
39 package body Ada.Wide_Wide_Text_IO.Float_Aux is
47 Item : out Long_Long_Float;
50 Buf : String (1 .. Field'Last);
52 Ptr : aliased Integer := 1;
56 Load_Width (File, Width, Buf, Stop);
57 String_Skip (Buf, Ptr);
59 Load_Real (File, Buf, Stop);
62 Item := Scan_Real (Buf, Ptr'Access, Stop);
64 Check_End_Of_Field (Buf, Stop, Ptr, Width);
73 Item : out Long_Long_Float;
76 Pos : aliased Integer;
79 String_Skip (From, Pos);
80 Item := Scan_Real (From, Pos'Access, From'Last);
84 when Constraint_Error =>
100 -- Skip initial blanks and load possible sign
103 Load (File, Buf, Ptr, '+', '-');
107 Load (File, Buf, Ptr, '.', Loaded);
110 Load_Digits (File, Buf, Ptr, Loaded);
112 -- Hopeless junk if no digits loaded
118 -- Otherwise must have digits to start
121 Load_Digits (File, Buf, Ptr, Loaded);
123 -- Hopeless junk if no digits loaded
131 Load (File, Buf, Ptr, '#', ':', Loaded);
137 Load (File, Buf, Ptr, '.', Loaded);
140 Load_Extended_Digits (File, Buf, Ptr);
142 -- Case of nnn#xxx.[xxx]# or nnn#xxx#
145 Load_Extended_Digits (File, Buf, Ptr);
146 Load (File, Buf, Ptr, '.', Loaded);
149 Load_Extended_Digits (File, Buf, Ptr);
152 -- As usual, it seems strange to allow mixed base characters,
153 -- but that is what ACVC tests expect, see CE3804M, case (3).
155 Load (File, Buf, Ptr, '#', ':');
158 -- Case of nnn.[nnn] or nnn
161 Load (File, Buf, Ptr, '.', Loaded);
164 Load_Digits (File, Buf, Ptr);
169 -- Deal with exponent
171 Load (File, Buf, Ptr, 'E', 'e', Loaded);
174 Load (File, Buf, Ptr, '+', '-');
175 Load_Digits (File, Buf, Ptr);
185 Item : Long_Long_Float;
190 Buf : String (1 .. Field'Last);
194 Set_Image_Real (Item, Buf, Ptr, Fore, Aft, Exp);
195 Put_Item (File, Buf (1 .. Ptr));
204 Item : Long_Long_Float;
208 Buf : String (1 .. Field'Last);
212 Set_Image_Real (Item, Buf, Ptr, Fore => 1, Aft => Aft, Exp => Exp);
214 if Ptr > To'Length then
218 for J in 1 .. Ptr loop
219 To (To'Last - Ptr + J) := Buf (J);
222 for J in To'First .. To'Last - Ptr loop
228 end Ada.Wide_Wide_Text_IO.Float_Aux;