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Diffstat (limited to 'libjava/java/util/zip/Adler32.java')
-rw-r--r-- | libjava/java/util/zip/Adler32.java | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/libjava/java/util/zip/Adler32.java b/libjava/java/util/zip/Adler32.java deleted file mode 100644 index fc9596cdf12..00000000000 --- a/libjava/java/util/zip/Adler32.java +++ /dev/null @@ -1,101 +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 6, 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 Adler32 algorithm is taken from RFC 1950. - * Status: Believed complete and correct. - */ - -public class Adler32 implements Checksum -{ - private static int BASE = 65521; /* largest prime smaller than 65536 */ - - int s1; - int s2; - - public Adler32 () - { - reset(); - } - - public void reset () { s1 = 1; s2 = 0; } - - public void update (int bval) - { - s1 = (s1 + (bval & 0xFF)) % BASE; - s2 = (s1 + s2) % BASE; - } - - public void update (byte[] buffer) - { - update(buffer, 0, buffer.length); - } - - public void update (byte[] buf, int off, int len) - { - int s1 = this.s1; - int s2 = this.s2; - while (len > 0) - { - // We can defer the modulo operation. - int n = 4000; - if (n > len) - n = len; - len -= n; - while (--n >= 0) - { - s1 = s1 + (buf[off++] & 0xFF); - s2 = s2 + s1; - } - s1 %= BASE; - s2 %= BASE; - } - this.s1 = s1; - this.s2 = s2; - } - - public long getValue() - { - return ((long) s2 << 16) + s1; - } -} - - - - - - - - - - - - - - - - - - - - - - - - - - |