1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
|
------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME COMPONENTS --
-- --
-- A D A . W I D E _ 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) 1992-2009, 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 Ada.Wide_Wide_Text_IO.Generic_Aux; use Ada.Wide_Wide_Text_IO.Generic_Aux;
with Ada.Wide_Wide_Text_IO.Float_Aux; use Ada.Wide_Wide_Text_IO.Float_Aux;
with System.Img_Dec; use System.Img_Dec;
with System.Img_LLD; use System.Img_LLD;
with System.Val_Dec; use System.Val_Dec;
with System.Val_LLD; use System.Val_LLD;
package body Ada.Wide_Wide_Text_IO.Decimal_Aux is
-------------
-- Get_Dec --
-------------
function Get_Dec
(File : File_Type;
Width : Field;
Scale : Integer) return Integer
is
Buf : String (1 .. Field'Last);
Ptr : aliased Integer;
Stop : Integer := 0;
Item : Integer;
begin
if Width /= 0 then
Load_Width (File, Width, Buf, Stop);
String_Skip (Buf, Ptr);
else
Load_Real (File, Buf, Stop);
Ptr := 1;
end if;
Item := Scan_Decimal (Buf, Ptr'Access, Stop, Scale);
Check_End_Of_Field (Buf, Stop, Ptr, Width);
return Item;
end Get_Dec;
-------------
-- Get_LLD --
-------------
function Get_LLD
(File : File_Type;
Width : Field;
Scale : Integer) return Long_Long_Integer
is
Buf : String (1 .. Field'Last);
Ptr : aliased Integer;
Stop : Integer := 0;
Item : Long_Long_Integer;
begin
if Width /= 0 then
Load_Width (File, Width, Buf, Stop);
String_Skip (Buf, Ptr);
else
Load_Real (File, Buf, Stop);
Ptr := 1;
end if;
Item := Scan_Long_Long_Decimal (Buf, Ptr'Access, Stop, Scale);
Check_End_Of_Field (Buf, Stop, Ptr, Width);
return Item;
end Get_LLD;
--------------
-- Gets_Dec --
--------------
function Gets_Dec
(From : String;
Last : not null access Positive;
Scale : Integer) return Integer
is
Pos : aliased Integer;
Item : Integer;
begin
String_Skip (From, Pos);
Item := Scan_Decimal (From, Pos'Access, From'Last, Scale);
Last.all := Pos - 1;
return Item;
exception
when Constraint_Error =>
Last.all := Pos - 1;
raise Data_Error;
end Gets_Dec;
--------------
-- Gets_LLD --
--------------
function Gets_LLD
(From : String;
Last : not null access Positive;
Scale : Integer) return Long_Long_Integer
is
Pos : aliased Integer;
Item : Long_Long_Integer;
begin
String_Skip (From, Pos);
Item := Scan_Long_Long_Decimal (From, Pos'Access, From'Last, Scale);
Last.all := Pos - 1;
return Item;
exception
when Constraint_Error =>
Last.all := Pos - 1;
raise Data_Error;
end Gets_LLD;
-------------
-- Put_Dec --
-------------
procedure Put_Dec
(File : File_Type;
Item : Integer;
Fore : Field;
Aft : Field;
Exp : Field;
Scale : Integer)
is
Buf : String (1 .. Field'Last);
Ptr : Natural := 0;
begin
Set_Image_Decimal (Item, Buf, Ptr, Scale, Fore, Aft, Exp);
Put_Item (File, Buf (1 .. Ptr));
end Put_Dec;
-------------
-- Put_LLD --
-------------
procedure Put_LLD
(File : File_Type;
Item : Long_Long_Integer;
Fore : Field;
Aft : Field;
Exp : Field;
Scale : Integer)
is
Buf : String (1 .. Field'Last);
Ptr : Natural := 0;
begin
Set_Image_Long_Long_Decimal (Item, Buf, Ptr, Scale, Fore, Aft, Exp);
Put_Item (File, Buf (1 .. Ptr));
end Put_LLD;
--------------
-- Puts_Dec --
--------------
procedure Puts_Dec
(To : out String;
Item : Integer;
Aft : Field;
Exp : Field;
Scale : Integer)
is
Buf : String (1 .. Field'Last);
Fore : Integer;
Ptr : Natural := 0;
begin
-- 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
raise Layout_Error;
else
To := Buf (1 .. Ptr);
end if;
end Puts_Dec;
--------------
-- Puts_Dec --
--------------
procedure Puts_LLD
(To : out String;
Item : Long_Long_Integer;
Aft : Field;
Exp : Field;
Scale : Integer)
is
Buf : String (1 .. Field'Last);
Fore : Integer;
Ptr : Natural := 0;
begin
Fore :=
(if Exp = 0 then To'Length - 1 - Aft else To'Length - 2 - Aft - Exp);
if Fore < 1 then
raise Layout_Error;
end if;
Set_Image_Long_Long_Decimal (Item, Buf, Ptr, Scale, Fore, Aft, Exp);
if Ptr > To'Length then
raise Layout_Error;
else
To := Buf (1 .. Ptr);
end if;
end Puts_LLD;
end Ada.Wide_Wide_Text_IO.Decimal_Aux;
|
