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[/] [openrisc/] [tags/] [gnu-src/] [gcc-4.5.1/] [gcc-4.5.1-or32-1.0rc3/] [gcc/] [ada/] [a-tiflau.adb] - Rev 593
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------------------------------------------------------------------------------ -- -- -- GNAT RUN-TIME COMPONENTS -- -- -- -- A D A . T E X T _ I O . F L O A T _ 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.Text_IO.Generic_Aux; use Ada.Text_IO.Generic_Aux; with System.Img_Real; use System.Img_Real; with System.Val_Real; use System.Val_Real; package body Ada.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); Load (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 -- Prevent the potential processing of '.' in cases where the -- initial digits have a trailing underscore. if Buf (Ptr) = '_' then return; end if; 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 .. 3 * Field'Last + 2); 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 .. 3 * Field'Last + 2); 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.Text_IO.Float_Aux;
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