edu.berkeley.cs.succinct.util

Class CommonUtils

java.lang.Object

edu.berkeley.cs.succinct.util.CommonUtils

public class CommonUtils
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CommonUtils.DictionaryUtils

Field Summary

Fields

Modifier and Type	Field and Description
static long	two32

Constructor Summary

Constructors

Constructor and Description
CommonUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static int	intLog2(long n) Get the integer logarithm to base 2.
static long	modulo(long a, long n) Get the arithmetic modulo.
static int	popCount(long n) Counts the number of set bits in input integer.
static int[]	readArray(java.io.DataInputStream is) Reads an integer array from stream.

Methods inherited from class java.lang.Object

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

Field Detail

two32

public static final long two32

See Also:

Constant Field Values

Constructor Detail

CommonUtils

public CommonUtils()

Method Detail

readArray

public static int[] readArray(java.io.DataInputStream is)

Reads an integer array from stream.

Parameters:

is - DataInputStream to read data from.

Returns:

Array read from stream.

intLog2

public static int intLog2(long n)

Get the integer logarithm to base 2.

Parameters:

n - Input integer.

Returns:

Integer logarithm to base 2.

modulo

public static long modulo(long a,
          long n)

Get the arithmetic modulo.

Parameters:

a - Input operand.

n - Modulus.

Returns:

Value of the modulo.

popCount

public static int popCount(long n)

Counts the number of set bits in input integer.

Parameters:

n - Input integer.

Returns:

The pop-count.