|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectorg.openjena.atlas.lib.BitsLong
public final class BitsLong
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)
Method Summary | |
---|---|
static long |
access(long bits,
int start,
int finish)
Get the bits from start (inclusive) to finish (exclusive), leaving them aligned in the long. |
static long |
clear(long bits,
int start,
int finish)
|
static boolean |
isSet(long bits,
int bitIndex)
|
static long |
mask(int start,
int finish)
Create a mask that has ones between bit positions start (inc) and finish (exc) |
static long |
maskZero(int start,
int finish)
Create a mask that has zeros between bit positions start (inc) and finish (exc) and ones elsewhere |
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 alone. |
static long |
set(long bits,
int bitIndex)
Set the bits specificied. |
static long |
set(long bits,
int start,
int finish)
Set the bits from string (inc) to finish (exc) to one |
static boolean |
test(long bits,
boolean isSet,
int bitIndex)
|
static boolean |
test(long bits,
long value,
int start,
int finish)
|
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. |
static long |
unpack(String str,
int startChar,
int finishChar)
Get bits from a hex string. |
Methods inherited from class java.lang.Object |
---|
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
---|
public static final long unpack(long bits, int start, int finish)
public static final long pack(long bits, long value, int start, int finish)
public static final long unpack(String str, int startChar, int finishChar)
str
- startChar
- Index of first character (counted from the left, string style).finishChar
- Index after the last character (counted from the left, string style).
public static final long set(long bits, int bitIndex)
bits
- PatternbitIndex
-
public static final long set(long bits, int start, int finish)
bits
- Patternstart
- start (inclusive)finish
- finish (exclusive)
public static final boolean test(long bits, boolean isSet, int bitIndex)
public static final boolean isSet(long bits, int bitIndex)
public static final boolean test(long bits, long value, int start, int finish)
public static final long access(long bits, int start, int finish)
public static final long clear(long bits, int start, int finish)
public static final long mask(int start, int finish)
public static final long maskZero(int start, int finish)
|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |