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+------------------------------------------------------------------------------
+-- --
+-- GNAT RUN-TIME COMPONENTS --
+-- --
+-- 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 --
+-- --
+-- B o d y --
+-- --
+-- Copyright (C) 1992-2005, 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_Wide_Text_IO.Generic_Aux; use Ada.Wide_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_Wide_Text_IO.Float_Aux is
+
+ ---------
+ -- Get --
+ ---------
+
+ procedure Get
+ (File : File_Type;
+ Item : out Long_Long_Float;
+ Width : 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 : 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 : 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 : File_Type;
+ Item : Long_Long_Float;
+ Fore : Field;
+ Aft : Field;
+ Exp : 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 : Long_Long_Float;
+ Aft : Field;
+ Exp : 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_Wide_Text_IO.Float_Aux;