From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/ada/a-tiflau.adb | 234 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 234 insertions(+) create mode 100644 gcc/ada/a-tiflau.adb (limited to 'gcc/ada/a-tiflau.adb') diff --git a/gcc/ada/a-tiflau.adb b/gcc/ada/a-tiflau.adb new file mode 100644 index 000000000..1f8f58b20 --- /dev/null +++ b/gcc/ada/a-tiflau.adb @@ -0,0 +1,234 @@ +------------------------------------------------------------------------------ +-- -- +-- 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 -- +-- . -- +-- -- +-- 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; -- cgit v1.2.3