com.alipay.sofa.jraft.util

类 Ints

java.lang.Object

com.alipay.sofa.jraft.util.Ints

public final class Ints
extends Object

Static utility methods pertaining to int primitives.

作者:

jiachun.fjc

字段概要

字段

限定符和类型	字段和说明
static int	MAX_POWER_OF_TWO The largest power of two that can be represented as an int.

方法概要

限定符和类型	方法和说明
static int	checkedCast(long value) Returns the int value that is equal to value, if possible.
static int	findNextPositivePowerOfTwo(int value) Fast method of finding the next power of 2 greater than or equal to the supplied value.
static boolean	isPowerOfTwo(int value) Is this value a power of two.
static int	roundToPowerOfTwo(int value) Find the next larger positive power of two value up from the given value.
static int	saturatedCast(long value) Returns the int nearest in value to value.

从类继承的方法 java.lang.Object

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

字段详细资料

MAX_POWER_OF_TWO

public static final int MAX_POWER_OF_TWO

The largest power of two that can be represented as an int.

另请参阅:

常量字段值

方法详细资料

checkedCast

public static int checkedCast(long value)

Returns the int value that is equal to value, if possible.

saturatedCast

public static int saturatedCast(long value)

Returns the int nearest in value to value.

findNextPositivePowerOfTwo

public static int findNextPositivePowerOfTwo(int value)

Fast method of finding the next power of 2 greater than or equal to the supplied value. If the value is <= 0 then 1 will be returned. This method is not suitable for Integer.MIN_VALUE or numbers greater than 2^30.

参数:

value - from which to search for next power of 2

返回:

The next power of 2 or the value itself if it is a power of 2

roundToPowerOfTwo

public static int roundToPowerOfTwo(int value)

Find the next larger positive power of two value up from the given value. If value is a power of two then this value will be returned.

参数:

value - from which next positive power of two will be found

返回:

the next positive power of 2 or this value if it is a power of 2

isPowerOfTwo

public static boolean isPowerOfTwo(int value)

Is this value a power of two.

参数:

value - to be tested to see if it is a power of two

返回:

true if the value is a power of 2 otherwise false