aboutsummaryrefslogtreecommitdiffstats
path: root/gcc-4.3.1/gcc/ada/g-crc32.adb
diff options
context:
space:
mode:
Diffstat (limited to 'gcc-4.3.1/gcc/ada/g-crc32.adb')
-rw-r--r--gcc-4.3.1/gcc/ada/g-crc32.adb87
1 files changed, 87 insertions, 0 deletions
diff --git a/gcc-4.3.1/gcc/ada/g-crc32.adb b/gcc-4.3.1/gcc/ada/g-crc32.adb
new file mode 100644
index 000000000..49c9734ce
--- /dev/null
+++ b/gcc-4.3.1/gcc/ada/g-crc32.adb
@@ -0,0 +1,87 @@
+------------------------------------------------------------------------------
+-- --
+-- GNAT LIBRARY COMPONENTS --
+-- --
+-- G N A T . C R C 3 2 --
+-- --
+-- B o d y --
+-- --
+-- Copyright (C) 2001-2007, AdaCore --
+-- --
+-- 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.Unchecked_Conversion;
+
+package body GNAT.CRC32 is
+
+ ------------
+ -- Update --
+ ------------
+
+ procedure Update (C : in out CRC32; Value : String) is
+ begin
+ for K in Value'Range loop
+ Update (C, Value (K));
+ end loop;
+ end Update;
+
+ procedure Update (C : in out CRC32; Value : Ada.Streams.Stream_Element) is
+ function To_Char is new Ada.Unchecked_Conversion
+ (Ada.Streams.Stream_Element, Character);
+ V : constant Character := To_Char (Value);
+ begin
+ Update (C, V);
+ end Update;
+
+ procedure Update
+ (C : in out CRC32;
+ Value : Ada.Streams.Stream_Element_Array)
+ is
+ begin
+ for K in Value'Range loop
+ Update (C, Value (K));
+ end loop;
+ end Update;
+
+ -----------------
+ -- Wide_Update --
+ -----------------
+
+ procedure Wide_Update (C : in out CRC32; Value : Wide_Character) is
+ subtype S2 is String (1 .. 2);
+ function To_S2 is new Ada.Unchecked_Conversion (Wide_Character, S2);
+ VS : constant S2 := To_S2 (Value);
+ begin
+ Update (C, VS (1));
+ Update (C, VS (2));
+ end Wide_Update;
+
+ procedure Wide_Update (C : in out CRC32; Value : Wide_String) is
+ begin
+ for K in Value'Range loop
+ Wide_Update (C, Value (K));
+ end loop;
+ end Wide_Update;
+
+end GNAT.CRC32;