com.graphhopper.util

Class BitUtil

java.lang.Object

com.graphhopper.util.BitUtil

public class BitUtil
extends Object

LITTLE endianness is default for GraphHopper and most microprocessors.

Author:

Peter Karich

Field Summary

Fields

Modifier and Type	Field and Description
static BitUtil	LITTLE

Constructor Summary

Constructors

Constructor and Description
BitUtil()

Method Summary

Modifier and Type	Method and Description
static int	countBitValue(int maxTurnCosts)
byte[]	fromBitString(String str)
void	fromDouble(byte[] bytes, double value)
void	fromDouble(byte[] bytes, double value, int offset)
byte[]	fromDouble(double value)
void	fromFloat(byte[] bytes, float value)
void	fromFloat(byte[] bytes, float value, int offset)
byte[]	fromFloat(float value)
void	fromInt(byte[] bytes, int value)
void	fromInt(byte[] bytes, int value, int offset)
byte[]	fromInt(int value)
void	fromLong(byte[] bytes, long value)
void	fromLong(byte[] bytes, long value, int offset)
byte[]	fromLong(long value)
void	fromShort(byte[] bytes, short value)
void	fromShort(byte[] bytes, short value, int offset)
byte[]	fromShort(short value)
int	getIntHigh(long longValue)
int	getIntLow(long longValue)
String	toBitString(byte[] bytes) Higher order bits comes first in the returned string.
String	toBitString(IntsRef intsRef)
String	toBitString(long value) Similar to Long.toBinaryString
String	toBitString(long value, int bits) Higher order bits comes first in the returned string.
double	toDouble(byte[] bytes)
double	toDouble(byte[] bytes, int offset)
float	toFloat(byte[] bytes)
float	toFloat(byte[] bytes, int offset)
int	toInt(byte[] b)
int	toInt(byte[] b, int offset)
String	toLastBitString(long value, int bits)
long	toLong(byte[] b) See the counterpart fromLong(long)
long	toLong(byte[] b, int offset)
long	toLong(int intLow, int intHigh)
short	toShort(byte[] b)
short	toShort(byte[] b, int offset)
static int	toSignedInt(long x) Converts the specified long back into a signed int (reverse method for toUnsignedLong)
static long	toUnsignedLong(int x) This method handles the specified (potentially negative) int as unsigned bit representation and returns the positive converted long.

Methods inherited from class java.lang.Object

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

Field Detail

LITTLE

public static final BitUtil LITTLE

Constructor Detail

BitUtil

public BitUtil()

Method Detail

toDouble

public final double toDouble(byte[] bytes)

toDouble

public final double toDouble(byte[] bytes,
                             int offset)

fromDouble

public final byte[] fromDouble(double value)

fromDouble

public final void fromDouble(byte[] bytes,
                             double value)

fromDouble

public final void fromDouble(byte[] bytes,
                             double value,
                             int offset)

toFloat

public final float toFloat(byte[] bytes)

toFloat

public final float toFloat(byte[] bytes,
                           int offset)

fromFloat

public final byte[] fromFloat(float value)

fromFloat

public final void fromFloat(byte[] bytes,
                            float value)

fromFloat

public final void fromFloat(byte[] bytes,
                            float value,
                            int offset)

toShort

public final short toShort(byte[] b)

toShort

public final short toShort(byte[] b,
                           int offset)

toInt

public final int toInt(byte[] b)

toInt

public final int toInt(byte[] b,
                       int offset)

fromInt

public final byte[] fromInt(int value)

fromInt

public final void fromInt(byte[] bytes,
                          int value)

fromShort

public final byte[] fromShort(short value)

fromShort

public final void fromShort(byte[] bytes,
                            short value)

fromShort

public void fromShort(byte[] bytes,
                      short value,
                      int offset)

fromInt

public final void fromInt(byte[] bytes,
                          int value,
                          int offset)

toLong

public final long toLong(byte[] b)

See the counterpart fromLong(long)

toLong

public final long toLong(int intLow,
                         int intHigh)

toLong

public final long toLong(byte[] b,
                         int offset)

fromLong

public final byte[] fromLong(long value)

fromLong

public final void fromLong(byte[] bytes,
                           long value)

fromLong

public final void fromLong(byte[] bytes,
                           long value,
                           int offset)

fromBitString

public byte[] fromBitString(String str)

toBitString

public final String toBitString(IntsRef intsRef)

toBitString

public final String toBitString(long value)

Similar to Long.toBinaryString

toLastBitString

public String toLastBitString(long value,
                              int bits)

toBitString

public String toBitString(long value,
                          int bits)

Higher order bits comes first in the returned string.

Parameters:

bits - how many bits should be returned.

toBitString

public String toBitString(byte[] bytes)

Higher order bits comes first in the returned string.

getIntLow

public final int getIntLow(long longValue)

getIntHigh

public final int getIntHigh(long longValue)

countBitValue

public static int countBitValue(int maxTurnCosts)

toUnsignedLong

public static long toUnsignedLong(int x)

This method handles the specified (potentially negative) int as unsigned bit representation and returns the positive converted long.

toSignedInt

public static int toSignedInt(long x)

Converts the specified long back into a signed int (reverse method for toUnsignedLong)