Package org.apache.datasketches.common

Class ByteArrayUtil

java.lang.Object

org.apache.datasketches.common.ByteArrayUtil

public final class ByteArrayUtil
extends Object

Useful methods for byte arrays.

Author:

Lee Rhodes

Constructor Summary

Constructors

Constructor	Description
ByteArrayUtil()

Method Summary

Modifier and Type	Method	Description
static void	copyBytes(byte[] source, int srcStart, byte[] target, int tgtStart, int numBytes)	Copies bytes from source to target with offsets on both the source and target.
static double	getDoubleBE(byte[] array, int offset)	Get a double from the given byte array starting at the given offset in big endian order.
static double	getDoubleLE(byte[] array, int offset)	Get a double from the given byte array starting at the given offset in little endian order.
static float	getFloatBE(byte[] array, int offset)	Get a float from the given byte array starting at the given offset in big endian order.
static float	getFloatLE(byte[] array, int offset)	Get a float from the given byte array starting at the given offset in little endian order.
static int	getIntBE(byte[] array, int offset)	Get a int from the given byte array starting at the given offset in big endian order.
static int	getIntLE(byte[] array, int offset)	Get a int from the given byte array starting at the given offset in little endian order.
static long	getLongBE(byte[] array, int offset)	Get a long from the source byte array starting at the given offset in big endian order.
static long	getLongLE(byte[] array, int offset)	Get a long from the given byte array starting at the given offset in little endian order.
static short	getShortBE(byte[] array, int offset)	Get a short from the given byte array starting at the given offset in big endian order.
static short	getShortLE(byte[] array, int offset)	Get a short from the given byte array starting at the given offset in little endian order.
static void	putDoubleBE(byte[] array, int offset, double value)	Put the source double into the destination byte array starting at the given offset in big endian order.
static void	putDoubleLE(byte[] array, int offset, double value)	Put the source double into the destination byte array starting at the given offset in little endian order.
static void	putFloatBE(byte[] array, int offset, float value)	Put the source float into the destination byte array starting at the given offset in big endian order.
static void	putFloatLE(byte[] array, int offset, float value)	Put the source float into the destination byte array starting at the given offset in little endian order.
static void	putIntBE(byte[] array, int offset, int value)	Put the source int into the destination byte array starting at the given offset in big endian order.
static void	putIntLE(byte[] array, int offset, int value)	Put the source int into the destination byte array starting at the given offset in little endian order.
static void	putLongBE(byte[] array, int offset, long value)	Put the source long into the destination byte array starting at the given offset in big endian order.
static void	putLongLE(byte[] array, int offset, long value)	Put the source long into the destination byte array starting at the given offset in little endian order.
static void	putShortBE(byte[] array, int offset, short value)	Put the source short into the destination byte array starting at the given offset in big endian order.
static void	putShortLE(byte[] array, int offset, short value)	Put the source short into the destination byte array starting at the given offset in little endian order.

Methods inherited from class java.lang.Object

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

Constructor Detail

ByteArrayUtil

public ByteArrayUtil()

Method Detail

copyBytes

public static void copyBytes(byte[] source,
                             int srcStart,
                             byte[] target,
                             int tgtStart,
                             int numBytes)

Copies bytes from source to target with offsets on both the source and target.

Parameters:

source - the given source

srcStart - the source starting index

target - the give target

tgtStart - the target starting index

numBytes - the number of bytes to be transferred.

getShortLE

public static short getShortLE(byte[] array,
                               int offset)

Get a short from the given byte array starting at the given offset in little endian order. There is no bounds checking.

Parameters:

array - source byte array

offset - source offset

Returns:

the short

putShortLE

public static void putShortLE(byte[] array,
                              int offset,
                              short value)

Put the source short into the destination byte array starting at the given offset in little endian order. There is no bounds checking.

Parameters:

array - destination byte array

offset - destination offset

value - source short

getShortBE

public static short getShortBE(byte[] array,
                               int offset)

Get a short from the given byte array starting at the given offset in big endian order. There is no bounds checking.

Parameters:

array - source byte array

offset - source offset

Returns:

the short

putShortBE

public static void putShortBE(byte[] array,
                              int offset,
                              short value)

Put the source short into the destination byte array starting at the given offset in big endian order. There is no bounds checking.

Parameters:

array - destination byte array

offset - destination offset

value - source short

getIntLE

public static int getIntLE(byte[] array,
                           int offset)

Get a int from the given byte array starting at the given offset in little endian order. There is no bounds checking.

Parameters:

array - source byte array

offset - source offset

Returns:

the int

putIntLE

public static void putIntLE(byte[] array,
                            int offset,
                            int value)

Put the source int into the destination byte array starting at the given offset in little endian order. There is no bounds checking.

Parameters:

array - destination byte array

offset - destination offset

value - source int

getIntBE

public static int getIntBE(byte[] array,
                           int offset)

Get a int from the given byte array starting at the given offset in big endian order. There is no bounds checking.

Parameters:

array - source byte array

offset - source offset

Returns:

the int

putIntBE

public static void putIntBE(byte[] array,
                            int offset,
                            int value)

Put the source int into the destination byte array starting at the given offset in big endian order. There is no bounds checking.

Parameters:

array - destination byte array

offset - destination offset

value - source int

getLongLE

public static long getLongLE(byte[] array,
                             int offset)

Get a long from the given byte array starting at the given offset in little endian order. There is no bounds checking.

Parameters:

array - source byte array

offset - source offset

Returns:

the long

putLongLE

public static void putLongLE(byte[] array,
                             int offset,
                             long value)

Put the source long into the destination byte array starting at the given offset in little endian order. There is no bounds checking.

Parameters:

array - destination byte array

offset - destination offset

value - source long

getLongBE

public static long getLongBE(byte[] array,
                             int offset)

Get a long from the source byte array starting at the given offset in big endian order. There is no bounds checking.

Parameters:

array - source byte array

offset - source starting point

Returns:

the long

putLongBE

public static void putLongBE(byte[] array,
                             int offset,
                             long value)

Put the source long into the destination byte array starting at the given offset in big endian order. There is no bounds checking.

Parameters:

array - destination byte array

offset - destination starting point

value - source long

getFloatLE

public static float getFloatLE(byte[] array,
                               int offset)

Get a float from the given byte array starting at the given offset in little endian order. There is no bounds checking.

Parameters:

array - source byte array

offset - source offset

Returns:

the float

putFloatLE

public static void putFloatLE(byte[] array,
                              int offset,
                              float value)

Put the source float into the destination byte array starting at the given offset in little endian order. There is no bounds checking.

Parameters:

array - destination byte array

offset - destination offset

value - source float

getFloatBE

public static float getFloatBE(byte[] array,
                               int offset)

Get a float from the given byte array starting at the given offset in big endian order. There is no bounds checking.

Parameters:

array - source byte array

offset - source offset

Returns:

the float

putFloatBE

public static void putFloatBE(byte[] array,
                              int offset,
                              float value)

Put the source float into the destination byte array starting at the given offset in big endian order. There is no bounds checking.

Parameters:

array - destination byte array

offset - destination offset

value - source float

getDoubleLE

public static double getDoubleLE(byte[] array,
                                 int offset)

Get a double from the given byte array starting at the given offset in little endian order. There is no bounds checking.

Parameters:

array - source byte array

offset - source offset

Returns:

the double

putDoubleLE

public static void putDoubleLE(byte[] array,
                               int offset,
                               double value)

Put the source double into the destination byte array starting at the given offset in little endian order. There is no bounds checking.

Parameters:

array - destination byte array

offset - destination offset

value - source double

getDoubleBE

public static double getDoubleBE(byte[] array,
                                 int offset)

Get a double from the given byte array starting at the given offset in big endian order. There is no bounds checking.

Parameters:

array - source byte array

offset - source offset

Returns:

the double

putDoubleBE

public static void putDoubleBE(byte[] array,
                               int offset,
                               double value)

Put the source double into the destination byte array starting at the given offset in big endian order. There is no bounds checking.

Parameters:

array - destination byte array

offset - destination offset

value - source double