org.openflow.util
Class Unsigned

java.lang.Object
  org.openflow.util.Unsigned

public class Unsigned
extends java.lang.Object

A util library class for dealing with the lack of unsigned datatypes in Java

Author:

Rob Sherwood (rob.sherwood@stanford.edu), David Erickson (daviderickson@cs.stanford.edu)

Constructor Summary

Unsigned()

Method Summary

static short	getUnsignedByte(java.nio.ByteBuffer bb) Get an unsigned byte from the current position of the ByteBuffer
static short	getUnsignedByte(java.nio.ByteBuffer bb, int offset) Get an unsigned byte from the specified offset in the ByteBuffer
static long	getUnsignedInt(java.nio.ByteBuffer bb) Get an unsigned int from the current position of the ByteBuffer
static long	getUnsignedInt(java.nio.ByteBuffer bb, int offset) Get an unsigned int from the specified offset in the ByteBuffer
static java.math.BigInteger	getUnsignedLong(java.nio.ByteBuffer bb) Get an unsigned long from the current position of the ByteBuffer
static java.math.BigInteger	getUnsignedLong(java.nio.ByteBuffer bb, int offset) Get an unsigned long from the specified offset in the ByteBuffer
static int	getUnsignedShort(java.nio.ByteBuffer bb) Get an unsigned short from the current position of the ByteBuffer
static int	getUnsignedShort(java.nio.ByteBuffer bb, int offset) Get an unsigned short from the specified offset in the ByteBuffer
static void	putUnsignedByte(java.nio.ByteBuffer bb, short v) Put an unsigned byte into the specified ByteBuffer at the current position
static void	putUnsignedByte(java.nio.ByteBuffer bb, short v, int offset) Put an unsigned byte into the specified ByteBuffer at the specified offset
static void	putUnsignedInt(java.nio.ByteBuffer bb, long v) Put an unsigned int into the specified ByteBuffer at the current position
static void	putUnsignedInt(java.nio.ByteBuffer bb, long v, int offset) Put an unsigned int into the specified ByteBuffer at the specified offset
static void	putUnsignedLong(java.nio.ByteBuffer bb, java.math.BigInteger v) Put an unsigned long into the specified ByteBuffer at the current position
static void	putUnsignedLong(java.nio.ByteBuffer bb, java.math.BigInteger v, int offset) Put an unsigned long into the specified ByteBuffer at the specified offset
static void	putUnsignedShort(java.nio.ByteBuffer bb, int v) Put an unsigned short into the specified ByteBuffer at the current position
static void	putUnsignedShort(java.nio.ByteBuffer bb, int v, int offset) Put an unsigned short into the specified ByteBuffer at the specified offset

Methods inherited from class java.lang.Object

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

Constructor Detail

Unsigned

public Unsigned()

Method Detail

getUnsignedByte

public static short getUnsignedByte(java.nio.ByteBuffer bb)

Get an unsigned byte from the current position of the ByteBuffer

Parameters:

bb - ByteBuffer to get the byte from

Returns:

an unsigned byte contained in a short

getUnsignedByte

public static short getUnsignedByte(java.nio.ByteBuffer bb,
                                    int offset)

Get an unsigned byte from the specified offset in the ByteBuffer

Parameters:

bb - ByteBuffer to get the byte from

offset - the offset to get the byte from

Returns:

an unsigned byte contained in a short

putUnsignedByte

public static void putUnsignedByte(java.nio.ByteBuffer bb,
                                   short v)

Put an unsigned byte into the specified ByteBuffer at the current position

Parameters:

bb - ByteBuffer to put the byte into

v - the short containing the unsigned byte

putUnsignedByte

public static void putUnsignedByte(java.nio.ByteBuffer bb,
                                   short v,
                                   int offset)

Put an unsigned byte into the specified ByteBuffer at the specified offset

Parameters:

bb - ByteBuffer to put the byte into

v - the short containing the unsigned byte

offset - the offset to insert the unsigned byte at

getUnsignedShort

public static int getUnsignedShort(java.nio.ByteBuffer bb)

Get an unsigned short from the current position of the ByteBuffer

Parameters:

bb - ByteBuffer to get the byte from

Returns:

an unsigned short contained in a int

getUnsignedShort

public static int getUnsignedShort(java.nio.ByteBuffer bb,
                                   int offset)

Get an unsigned short from the specified offset in the ByteBuffer

Parameters:

bb - ByteBuffer to get the short from

offset - the offset to get the short from

Returns:

an unsigned short contained in a int

putUnsignedShort

public static void putUnsignedShort(java.nio.ByteBuffer bb,
                                    int v)

Put an unsigned short into the specified ByteBuffer at the current position

Parameters:

bb - ByteBuffer to put the short into

v - the int containing the unsigned short

putUnsignedShort

public static void putUnsignedShort(java.nio.ByteBuffer bb,
                                    int v,
                                    int offset)

Put an unsigned short into the specified ByteBuffer at the specified offset

Parameters:

bb - ByteBuffer to put the short into

v - the int containing the unsigned short

offset - the offset to insert the unsigned short at

getUnsignedInt

public static long getUnsignedInt(java.nio.ByteBuffer bb)

Get an unsigned int from the current position of the ByteBuffer

Parameters:

bb - ByteBuffer to get the int from

Returns:

an unsigned int contained in a long

getUnsignedInt

public static long getUnsignedInt(java.nio.ByteBuffer bb,
                                  int offset)

Get an unsigned int from the specified offset in the ByteBuffer

Parameters:

bb - ByteBuffer to get the int from

offset - the offset to get the int from

Returns:

an unsigned int contained in a long

putUnsignedInt

public static void putUnsignedInt(java.nio.ByteBuffer bb,
                                  long v)

Put an unsigned int into the specified ByteBuffer at the current position

Parameters:

bb - ByteBuffer to put the int into

v - the long containing the unsigned int

putUnsignedInt

public static void putUnsignedInt(java.nio.ByteBuffer bb,
                                  long v,
                                  int offset)

Put an unsigned int into the specified ByteBuffer at the specified offset

Parameters:

bb - ByteBuffer to put the int into

v - the long containing the unsigned int

offset - the offset to insert the unsigned int at

getUnsignedLong

public static java.math.BigInteger getUnsignedLong(java.nio.ByteBuffer bb)

Get an unsigned long from the current position of the ByteBuffer

Parameters:

bb - ByteBuffer to get the long from

Returns:

an unsigned long contained in a BigInteger

getUnsignedLong

public static java.math.BigInteger getUnsignedLong(java.nio.ByteBuffer bb,
                                                   int offset)

Get an unsigned long from the specified offset in the ByteBuffer

Parameters:

bb - ByteBuffer to get the long from

offset - the offset to get the long from

Returns:

an unsigned long contained in a BigInteger

putUnsignedLong

public static void putUnsignedLong(java.nio.ByteBuffer bb,
                                   java.math.BigInteger v)

Put an unsigned long into the specified ByteBuffer at the current position

Parameters:

bb - ByteBuffer to put the long into

v - the BigInteger containing the unsigned long

putUnsignedLong

public static void putUnsignedLong(java.nio.ByteBuffer bb,
                                   java.math.BigInteger v,
                                   int offset)

Put an unsigned long into the specified ByteBuffer at the specified offset

Parameters:

bb - ByteBuffer to put the long into

v - the BigInteger containing the unsigned long

offset - the offset to insert the unsigned long at