| java.lang.Object
 com.hp.hpl.jena.shared.uuid.Bits
| Bits | | final public class Bits (Code) | | Utilities for manipulating a bit pattern which held in a 64 bit long
(java.util.BitSet does not allow getting the pattern as a long)
author:
Andy Seaborne
version:
$Id: Bits.java,v 1.4 2008/01/02 12:06:07 andy_seaborne Exp $ |
| Field Summary | |
| final public static boolean | CHECK
|
| Method Summary | |
| final public static long | access(long bits, int start, int finish)
Get the bits from start (inclusive) to finish (exclusive),
leaving them aligned in the long. | | final public static long | clear(long bits, int start, int finish)
| | final public static long | mask(int start, int finish)
| | final public static long | maskZero(int start, int finish)
| | final public static long | pack(long bits, long value, int start, int finish)
Place the value into the bit pattern between start and finish;
leaves other bits along. | | final public static long | set(long bits, int bitIndex)
Set the bits specificied. | | final public static long | set(long bits, int start, int finish)
| | final public static boolean | test(long bits, boolean isSet, int bitIndex)
| | final public static boolean | test(long bits, long value, int start, int finish)
| | final public static long | unpack(long bits, int start, int finish)
Extract the value packed into bits start (inclusive) and finish (exclusive),
the value is returned the low part of the returned long. | | final public static long | unpack(String str, int startChar, int finishChar)
Get bits from a hex string.
Parameters:
str -
Parameters:
startChar - Index of first character (counted from the left, string style). |
| CHECK | | final public static boolean CHECK(Code) | | |
| access | | final public static long access(long bits, int start, int finish)(Code) | | Get the bits from start (inclusive) to finish (exclusive),
leaving them aligned in the long. See alio unpack, returns
the value found at that place.
|
| clear | | final public static long clear(long bits, int start, int finish)(Code) | | |
| mask | | final public static long mask(int start, int finish)(Code) | | Create a mask that has ones between bit positions start (inc) and finish (exc)
|
| maskZero | | final public static long maskZero(int start, int finish)(Code) | | Create a mask that has zeros between bit positions start (inc) and finish (exc)
and ones elsewhere
|
| pack | | final public static long pack(long bits, long value, int start, int finish)(Code) | | Place the value into the bit pattern between start and finish;
leaves other bits along.
|
| set | | final public static long set(long bits, int bitIndex)(Code) | | Set the bits specificied.
Parameters:
bits - Pattern
Parameters:
bitIndex - Modified pattern |
| set | | final public static long set(long bits, int start, int finish)(Code) | | Set the bits from string (inc) to finish (exc) to one
Parameters:
bits - Pattern
Parameters:
start - start (inclusive)
Parameters:
finish - finish (exclusive) Modified pattern |
| test | | final public static boolean test(long bits, boolean isSet, int bitIndex)(Code) | | |
| test | | final public static boolean test(long bits, long value, int start, int finish)(Code) | | |
| unpack | | final public static long unpack(long bits, int start, int finish)(Code) | | Extract the value packed into bits start (inclusive) and finish (exclusive),
the value is returned the low part of the returned long.
The low bit is bit zero.
|
| unpack | | final public static long unpack(String str, int startChar, int finishChar)(Code) | | Get bits from a hex string.
Parameters:
str -
Parameters:
startChar - Index of first character (counted from the left, string style).
Parameters:
finishChar - Index after the last character (counted from the left, string style). long |
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