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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
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if you have obtained the source via the command 'git clone',
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1 files changed, 113 insertions, 0 deletions

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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                      S Y S T E M . V A L _ U T I L                       --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          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.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This package provides some common utilities used by the s-valxxx files
+
+package System.Val_Util is
+   pragma Pure;
+
+   procedure Normalize_String
+     (S    : in out String;
+      F, L : out Integer);
+   --  This procedure scans the string S setting F to be the index of the first
+   --  non-blank character of S and L to be the index of the last non-blank
+   --  character of S. Any lower case characters present in S will be folded
+   --  to their upper case equivalent except for character literals. If S
+   --  consists of entirely blanks then Constraint_Error is raised.
+   --
+   --  Note: if S is the null string, F is set to S'First, L to S'Last
+
+   procedure Scan_Sign
+     (Str   : String;
+      Ptr   : not null access Integer;
+      Max   : Integer;
+      Minus : out Boolean;
+      Start : out Positive);
+   --  The Str, Ptr, Max parameters are as for the scan routines (Str is the
+   --  string to be scanned starting at Ptr.all, and Max is the index of the
+   --  last character in the string). Scan_Sign first scans out any initial
+   --  blanks, raising Constraint_Error if the field is all blank. It then
+   --  checks for and skips an initial plus or minus, requiring a non-blank
+   --  character to follow (Constraint_Error is raised if plus or minus
+   --  appears at the end of the string or with a following blank). Minus is
+   --  set True if a minus sign was skipped, and False otherwise. On exit
+   --  Ptr.all points to the character after the sign, or to the first
+   --  non-blank character if no sign is present. Start is set to the point
+   --  to the first non-blank character (sign or digit after it).
+   --
+   --  Note: if Str is null, i.e. if Max is less than Ptr, then this is a
+   --  special case of an all-blank string, and Ptr is unchanged, and hence
+   --  is greater than Max as required in this case. Constraint_Error is
+   --  also raised in this case.
+
+   procedure Scan_Plus_Sign
+     (Str   : String;
+      Ptr   : not null access Integer;
+      Max   : Integer;
+      Start : out Positive);
+   --  Same as Scan_Sign, but allows only plus, not minus.
+   --  This is used for modular types.
+
+   function Scan_Exponent
+     (Str  : String;
+      Ptr  : not null access Integer;
+      Max  : Integer;
+      Real : Boolean := False) return Integer;
+   --  Called to scan a possible exponent. Str, Ptr, Max are as described above
+   --  for Scan_Sign. If Ptr.all < Max and Str (Ptr.all) = 'E' or 'e', then an
+   --  exponent is scanned out, with the exponent value returned in Exp, and
+   --  Ptr.all updated to point past the exponent. If the exponent field is
+   --  incorrectly formed or not present, then Ptr.all is unchanged, and the
+   --  returned exponent value is zero. Real indicates whether a minus sign
+   --  is permitted (True = permitted). Very large exponents are handled by
+   --  returning a suitable large value. If the base is zero, then any value
+   --  is allowed, and otherwise the large value will either cause underflow
+   --  or overflow during the scaling process which is fine.
+
+   procedure Scan_Trailing_Blanks (Str : String; P : Positive);
+   --  Checks that the remainder of the field Str (P .. Str'Last) is all
+   --  blanks. Raises Constraint_Error if a non-blank character is found.
+
+   procedure Scan_Underscore
+     (Str : String;
+      P   : in out Natural;
+      Ptr : not null access Integer;
+      Max : Integer;
+      Ext : Boolean);
+   --  Called if an underscore is encountered while scanning digits. Str (P)
+   --  contains the underscore. Ptr it the pointer to be returned to the
+   --  ultimate caller of the scan routine, Max is the maximum subscript in
+   --  Str, and Ext indicates if extended digits are allowed. In the case
+   --  where the underscore is invalid, Constraint_Error is raised with Ptr
+   --  set appropriately, otherwise control returns with P incremented past
+   --  the underscore.
+
+end System.Val_Util;