aboutsummaryrefslogtreecommitdiff
path: root/libjava/java/util/zip/CRC32.java
diff options
context:
space:
mode:
Diffstat (limited to 'libjava/java/util/zip/CRC32.java')
-rw-r--r--libjava/java/util/zip/CRC32.java70
1 files changed, 0 insertions, 70 deletions
diff --git a/libjava/java/util/zip/CRC32.java b/libjava/java/util/zip/CRC32.java
deleted file mode 100644
index 535cf184c72..00000000000
--- a/libjava/java/util/zip/CRC32.java
+++ /dev/null
@@ -1,70 +0,0 @@
-/* Copyright (C) 1999 Free Software Foundation
-
- This file is part of libgcj.
-
-This software is copyrighted work licensed under the terms of the
-Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
-details. */
-
-package java.util.zip;
-
-/**
- * @author Per Bothner
- * @date April 1, 1999.
- */
-
-/*
- * Written using on-line Java Platform 1.2 API Specification, as well
- * as "The Java Class Libraries", 2nd edition (Addison-Wesley, 1998).
- * The actual CRC32 algorithm is taken from RFC 1952.
- * Status: Believed complete and correct.
- */
-
-public class CRC32 implements Checksum
-{
- int crc = 0;
-
- static int[] crc_table = make_crc_table();
-
- /* Make the table for a fast CRC. */
- static int[] make_crc_table ()
- {
- int[] crc_table = new int[256];
- for (int n = 0; n < 256; n++)
- {
- int c = n;
- for (int k = 8; --k >= 0; )
- {
- if ((c & 1) != 0)
- c = 0xedb88320 ^ (c >>> 1);
- else
- c = c >>> 1;
- }
- crc_table[n] = c;
- }
- return crc_table;
- }
-
- public long getValue ()
- {
- return (long) crc & 0xffffffffL;
- }
-
- public void reset () { crc = 0; }
-
- public void update (int bval)
- {
- int c = ~crc;
- c = crc_table[(c ^ bval) & 0xff] ^ (c >>> 8);
- crc = ~c;
- }
-
- public void update (byte[] buf, int off, int len)
- {
- int c = ~crc;
- while (--len >= 0)
- c = crc_table[(c ^ buf[off++]) & 0xff] ^ (c >>> 8);
- crc = ~c;
- }
- public void update (byte[] buf) { update(buf, 0, buf.length); }
-}