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------------------------------------------------------------------------------
--                                                                          --
--                        GNAT RUN-TIME COMPONENTS                          --
--                                                                          --
--           A D A . W I D E _ T E X T _ I O . F L O A T _ A U X            --
--                                                                          --
--                                 B o d y                                  --
--                                                                          --
--          Copyright (C) 1992-2003 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,  51  Franklin  Street,  Fifth  Floor, --
-- Boston, MA 02110-1301, 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 Ada.Wide_Text_IO.Generic_Aux; use Ada.Wide_Text_IO.Generic_Aux;
 
with System.Img_Real;  use System.Img_Real;
with System.Val_Real;  use System.Val_Real;
 
package body Ada.Wide_Text_IO.Float_Aux is
 
   ---------
   -- Get --
   ---------
 
   procedure Get
     (File  : in File_Type;
      Item  : out Long_Long_Float;
      Width : in Field)
   is
      Buf  : String (1 .. Field'Last);
      Stop : Integer := 0;
      Ptr  : aliased Integer := 1;
 
   begin
      if Width /= 0 then
         Load_Width (File, Width, Buf, Stop);
         String_Skip (Buf, Ptr);
      else
         Load_Real (File, Buf, Stop);
      end if;
 
      Item := Scan_Real (Buf, Ptr'Access, Stop);
 
      Check_End_Of_Field (Buf, Stop, Ptr, Width);
   end Get;
 
   ----------
   -- Gets --
   ----------
 
   procedure Gets
     (From : in String;
      Item : out Long_Long_Float;
      Last : out Positive)
   is
      Pos : aliased Integer;
 
   begin
      String_Skip (From, Pos);
      Item := Scan_Real (From, Pos'Access, From'Last);
      Last := Pos - 1;
 
   exception
      when Constraint_Error =>
         raise Data_Error;
   end Gets;
 
   ---------------
   -- Load_Real --
   ---------------
 
   procedure Load_Real
     (File : in File_Type;
      Buf  : out String;
      Ptr  : in out Natural)
   is
      Loaded   : Boolean;
 
   begin
      --  Skip initial blanks and load possible sign
 
      Load_Skip (File);
      Load (File, Buf, Ptr, '+', '-');
 
      --  Case of .nnnn
 
      Load (File, Buf, Ptr, '.', Loaded);
 
      if Loaded then
         Load_Digits (File, Buf, Ptr, Loaded);
 
         --  Hopeless junk if no digits loaded
 
         if not Loaded then
            return;
         end if;
 
      --  Otherwise must have digits to start
 
      else
         Load_Digits (File, Buf, Ptr, Loaded);
 
         --  Hopeless junk if no digits loaded
 
         if not Loaded then
            return;
         end if;
 
         --  Based cases
 
         Load (File, Buf, Ptr, '#', ':', Loaded);
 
         if Loaded then
 
            --  Case of nnn#.xxx#
 
            Load (File, Buf, Ptr, '.', Loaded);
 
            if Loaded then
               Load_Extended_Digits (File, Buf, Ptr);
 
            --  Case of nnn#xxx.[xxx]# or nnn#xxx#
 
            else
               Load_Extended_Digits (File, Buf, Ptr);
               Load (File, Buf, Ptr, '.', Loaded);
 
               if Loaded then
                  Load_Extended_Digits (File, Buf, Ptr);
               end if;
 
               --  As usual, it seems strange to allow mixed base characters,
               --  but that is what ACVC tests expect, see CE3804M, case (3).
 
               Load (File, Buf, Ptr, '#', ':');
            end if;
 
         --  Case of nnn.[nnn] or nnn
 
         else
            Load (File, Buf, Ptr, '.', Loaded);
 
            if Loaded then
               Load_Digits (File, Buf, Ptr);
            end if;
         end if;
      end if;
 
      --  Deal with exponent
 
      Load (File, Buf, Ptr, 'E', 'e', Loaded);
 
      if Loaded then
         Load (File, Buf, Ptr, '+', '-');
         Load_Digits (File, Buf, Ptr);
      end if;
   end Load_Real;
 
   ---------
   -- Put --
   ---------
 
   procedure Put
     (File : in File_Type;
      Item : in Long_Long_Float;
      Fore : in Field;
      Aft  : in Field;
      Exp  : in Field)
   is
      Buf : String (1 .. Field'Last);
      Ptr : Natural := 0;
 
   begin
      Set_Image_Real (Item, Buf, Ptr, Fore, Aft, Exp);
      Put_Item (File, Buf (1 .. Ptr));
   end Put;
 
   ----------
   -- Puts --
   ----------
 
   procedure Puts
     (To   : out String;
      Item : in Long_Long_Float;
      Aft  : in Field;
      Exp  : in Field)
   is
      Buf    : String (1 .. Field'Last);
      Ptr    : Natural := 0;
 
   begin
      Set_Image_Real (Item, Buf, Ptr, Fore => 1, Aft => Aft, Exp => Exp);
 
      if Ptr > To'Length then
         raise Layout_Error;
 
      else
         for J in 1 .. Ptr loop
            To (To'Last - Ptr + J) := Buf (J);
         end loop;
 
         for J in To'First .. To'Last - Ptr loop
            To (J) := ' ';
         end loop;
      end if;
   end Puts;
 
end Ada.Wide_Text_IO.Float_Aux;

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[/] [scarts/] [trunk/] [toolchain/] [scarts-gcc/] [gcc-4.1.1/] [gcc/] [ada/] [a-wtflau.adb] - Blame information for rev 16

Line No.	Rev	Author	Line
1	12	jlechner	`------------------------------------------------------------------------------`
2			`-- --`
3			`-- GNAT RUN-TIME COMPONENTS --`
4			`-- --`
5			`-- A D A . W I D E _ T E X T _ I O . F L O A T _ A U X --`
6			`-- --`
7			`-- B o d y --`
8			`-- --`
9			`-- Copyright (C) 1992-2003 Free Software Foundation, Inc. --`
10			`-- --`
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, 51 Franklin Street, Fifth Floor, --`
20			`-- Boston, MA 02110-1301, USA. --`
21			`-- --`
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. --`
28			`-- --`
29			`-- GNAT was originally developed by the GNAT team at New York University. --`
30			`-- Extensive contributions were provided by Ada Core Technologies Inc. --`
31			`-- --`
32			`------------------------------------------------------------------------------`
33
34			`with Ada.Wide_Text_IO.Generic_Aux; use Ada.Wide_Text_IO.Generic_Aux;`
35
36			`with System.Img_Real; use System.Img_Real;`
37			`with System.Val_Real; use System.Val_Real;`
38
39			`package body Ada.Wide_Text_IO.Float_Aux is`
40
41			`---------`
42			`-- Get --`
43			`---------`
44
45			`procedure Get`
46			`(File : in File_Type;`
47			`Item : out Long_Long_Float;`
48			`Width : in Field)`
49			`is`
50			`Buf : String (1 .. Field'Last);`
51			`Stop : Integer := 0;`
52			`Ptr : aliased Integer := 1;`
53
54			`begin`
55			`if Width /= 0 then`
56			`Load_Width (File, Width, Buf, Stop);`
57			`String_Skip (Buf, Ptr);`
58			`else`
59			`Load_Real (File, Buf, Stop);`
60			`end if;`
61
62			`Item := Scan_Real (Buf, Ptr'Access, Stop);`
63
64			`Check_End_Of_Field (Buf, Stop, Ptr, Width);`
65			`end Get;`
66
67			`----------`
68			`-- Gets --`
69			`----------`
70
71			`procedure Gets`
72			`(From : in String;`
73			`Item : out Long_Long_Float;`
74			`Last : out Positive)`
75			`is`
76			`Pos : aliased Integer;`
77
78			`begin`
79			`String_Skip (From, Pos);`
80			`Item := Scan_Real (From, Pos'Access, From'Last);`
81			`Last := Pos - 1;`
82
83			`exception`
84			`when Constraint_Error =>`
85			`raise Data_Error;`
86			`end Gets;`
87
88			`---------------`
89			`-- Load_Real --`
90			`---------------`
91
92			`procedure Load_Real`
93			`(File : in File_Type;`
94			`Buf : out String;`
95			`Ptr : in out Natural)`
96			`is`
97			`Loaded : Boolean;`
98
99			`begin`
100			`-- Skip initial blanks and load possible sign`
101
102			`Load_Skip (File);`
103			`Load (File, Buf, Ptr, '+', '-');`
104
105			`-- Case of .nnnn`
106
107			`Load (File, Buf, Ptr, '.', Loaded);`
108
109			`if Loaded then`
110			`Load_Digits (File, Buf, Ptr, Loaded);`
111
112			`-- Hopeless junk if no digits loaded`
113
114			`if not Loaded then`
115			`return;`
116			`end if;`
117
118			`-- Otherwise must have digits to start`
119
120			`else`
121			`Load_Digits (File, Buf, Ptr, Loaded);`
122
123			`-- Hopeless junk if no digits loaded`
124
125			`if not Loaded then`
126			`return;`
127			`end if;`
128
129			`-- Based cases`
130
131			`Load (File, Buf, Ptr, '#', ':', Loaded);`
132
133			`if Loaded then`
134
135			`-- Case of nnn#.xxx#`
136
137			`Load (File, Buf, Ptr, '.', Loaded);`
138
139			`if Loaded then`
140			`Load_Extended_Digits (File, Buf, Ptr);`
141
142			`-- Case of nnn#xxx.[xxx]# or nnn#xxx#`
143
144			`else`
145			`Load_Extended_Digits (File, Buf, Ptr);`
146			`Load (File, Buf, Ptr, '.', Loaded);`
147
148			`if Loaded then`
149			`Load_Extended_Digits (File, Buf, Ptr);`
150			`end if;`
151
152			`-- As usual, it seems strange to allow mixed base characters,`
153			`-- but that is what ACVC tests expect, see CE3804M, case (3).`
154
155			`Load (File, Buf, Ptr, '#', ':');`
156			`end if;`
157
158			`-- Case of nnn.[nnn] or nnn`
159
160			`else`
161			`Load (File, Buf, Ptr, '.', Loaded);`
162
163			`if Loaded then`
164			`Load_Digits (File, Buf, Ptr);`
165			`end if;`
166			`end if;`
167			`end if;`
168
169			`-- Deal with exponent`
170
171			`Load (File, Buf, Ptr, 'E', 'e', Loaded);`
172
173			`if Loaded then`
174			`Load (File, Buf, Ptr, '+', '-');`
175			`Load_Digits (File, Buf, Ptr);`
176			`end if;`
177			`end Load_Real;`
178
179			`---------`
180			`-- Put --`
181			`---------`
182
183			`procedure Put`
184			`(File : in File_Type;`
185			`Item : in Long_Long_Float;`
186			`Fore : in Field;`
187			`Aft : in Field;`
188			`Exp : in Field)`
189			`is`
190			`Buf : String (1 .. Field'Last);`
191			`Ptr : Natural := 0;`
192
193			`begin`
194			`Set_Image_Real (Item, Buf, Ptr, Fore, Aft, Exp);`
195			`Put_Item (File, Buf (1 .. Ptr));`
196			`end Put;`
197
198			`----------`
199			`-- Puts --`
200			`----------`
201
202			`procedure Puts`
203			`(To : out String;`
204			`Item : in Long_Long_Float;`
205			`Aft : in Field;`
206			`Exp : in Field)`
207			`is`
208			`Buf : String (1 .. Field'Last);`
209			`Ptr : Natural := 0;`
210
211			`begin`
212			`Set_Image_Real (Item, Buf, Ptr, Fore => 1, Aft => Aft, Exp => Exp);`
213
214			`if Ptr > To'Length then`
215			`raise Layout_Error;`
216
217			`else`
218			`for J in 1 .. Ptr loop`
219			`To (To'Last - Ptr + J) := Buf (J);`
220			`end loop;`
221
222			`for J in To'First .. To'Last - Ptr loop`
223			`To (J) := ' ';`
224			`end loop;`
225			`end if;`
226			`end Puts;`
227
228			`end Ada.Wide_Text_IO.Float_Aux;`