+++ /dev/null
-------------------------------------------------------------------------------
--- --
--- 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 --
--- --
--- $Revision: 1.1.16.2 $
--- --
--- Copyright (C) 1992-1998 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, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, 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 (File, 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 =>
- Last := Pos - 1;
- 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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