1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
5 -- A D A . T E X T _ I O . F L O A T _ I O --
9 -- Copyright (C) 1992-2024, Free Software Foundation, Inc. --
11 -- This specification is derived from the Ada Reference Manual for use with --
12 -- GNAT. The copyright notice above, and the license provisions that follow --
13 -- apply solely to the contents of the part following the private keyword. --
15 -- GNAT is free software; you can redistribute it and/or modify it under --
16 -- terms of the GNU General Public License as published by the Free Soft- --
17 -- ware Foundation; either version 3, or (at your option) any later ver- --
18 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
19 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
20 -- or FITNESS FOR A PARTICULAR PURPOSE. --
22 -- As a special exception under Section 7 of GPL version 3, you are granted --
23 -- additional permissions described in the GCC Runtime Library Exception, --
24 -- version 3.1, as published by the Free Software Foundation. --
26 -- You should have received a copy of the GNU General Public License and --
27 -- a copy of the GCC Runtime Library Exception along with this program; --
28 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
29 -- <http://www.gnu.org/licenses/>. --
31 -- GNAT was originally developed by the GNAT team at New York University. --
32 -- Extensive contributions were provided by Ada Core Technologies Inc. --
34 ------------------------------------------------------------------------------
36 -- In Ada 95, the package Ada.Text_IO.Float_IO is a subpackage of Text_IO.
37 -- This is for compatibility with Ada 83. In GNAT we make it a child package
38 -- to avoid loading the necessary code if Float_IO is not instantiated. See
39 -- routine Rtsfind.Check_Text_IO_Special_Unit for a description of how we
40 -- patch up the difference in semantics so that it is invisible to the Ada
44 type Num
is digits <>;
46 package Ada
.Text_IO
.Float_IO
with
51 Default_Fore
: Field
:= 2;
52 Default_Aft
: Field
:= Num
'Digits - 1;
53 Default_Exp
: Field
:= 3;
60 Pre
=> Is_Open
(File
) and then Mode
(File
) = In_File
,
61 Global
=> (In_Out
=> File_System
),
62 Exceptional_Cases
=> (Data_Error | End_Error
=> Standard
.True);
69 Line_Length
'Old = Line_Length
70 and Page_Length
'Old = Page_Length
,
71 Global
=> (In_Out
=> File_System
),
72 Exceptional_Cases
=> (Data_Error | End_Error
=> Standard
.True);
77 Fore
: Field
:= Default_Fore
;
78 Aft
: Field
:= Default_Aft
;
79 Exp
: Field
:= Default_Exp
)
81 Pre
=> Is_Open
(File
) and then Mode
(File
) /= In_File
,
83 Line_Length
(File
)'Old = Line_Length
(File
)
84 and Page_Length
(File
)'Old = Page_Length
(File
),
85 Global
=> (In_Out
=> File_System
),
86 Exceptional_Cases
=> (Layout_Error
=> Line_Length
(File
) /= 0);
90 Fore
: Field
:= Default_Fore
;
91 Aft
: Field
:= Default_Aft
;
92 Exp
: Field
:= Default_Exp
)
95 Line_Length
'Old = Line_Length
96 and Page_Length
'Old = Page_Length
,
97 Global
=> (In_Out
=> File_System
),
98 Exceptional_Cases
=> (Layout_Error
=> Line_Length
/= 0);
106 Exceptional_Cases
=> (Data_Error
=> Standard
.True);
111 Aft
: Field
:= Default_Aft
;
112 Exp
: Field
:= Default_Exp
)
115 Exceptional_Cases
=> (Layout_Error
=> Standard
.True);
121 end Ada
.Text_IO
.Float_IO
;