sun.jvm.hotspot.utilities

Class Bits

java.lang.Object

sun.jvm.hotspot.utilities.Bits

public class Bits
extends java.lang.Object

Bit manipulation routines

Field Summary

Fields

Modifier and Type	Field and Description
static int	AllBits
static int	BitsPerByte
static int	BitsPerInt
static int	LogBytesPerInt
static int	LogBytesPerLong
static int	NoBits
static int	OneBit

Constructor Summary

Constructors

Constructor and Description
Bits()

Method Summary

Modifier and Type	Method and Description
static int	clearBits(int x, int m)
static int	clearNthBit(int x, int n)
static boolean	isSetNthBit(int word, int n)
static int	maskBits(int x, int m)
static long	maskBitsLong(long x, long m)
static int	nthBit(int n)
static int	rightNBits(int n)
static int	roundTo(int x, int s) Returns integer round-up to the nearest multiple of s (s must be a power of two)
static int	setBits(int x, int m)
static int	setNthBit(int x, int n)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

AllBits

public static final int AllBits

See Also:

Constant Field Values

NoBits

public static final int NoBits

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Constant Field Values

OneBit

public static final int OneBit

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Constant Field Values

BitsPerByte

public static final int BitsPerByte

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Constant Field Values

BitsPerInt

public static final int BitsPerInt

See Also:

Constant Field Values

LogBytesPerInt

public static final int LogBytesPerInt

See Also:

Constant Field Values

LogBytesPerLong

public static final int LogBytesPerLong

See Also:

Constant Field Values

Constructor Detail

Bits

public Bits()

Method Detail

setBits

public static int setBits(int x,
                          int m)

clearBits

public static int clearBits(int x,
                            int m)

nthBit

public static int nthBit(int n)

setNthBit

public static int setNthBit(int x,
                            int n)

clearNthBit

public static int clearNthBit(int x,
                              int n)

isSetNthBit

public static boolean isSetNthBit(int word,
                                  int n)

rightNBits

public static int rightNBits(int n)

maskBits

public static int maskBits(int x,
                           int m)

maskBitsLong

public static long maskBitsLong(long x,
                                long m)

roundTo

public static int roundTo(int x,
                          int s)

Returns integer round-up to the nearest multiple of s (s must be a power of two)