Package com.google.common.primitives

Class UnsignedInteger

java.lang.Object

java.lang.Number

com.google.common.primitives.UnsignedInteger

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<UnsignedInteger>

@GwtCompatible(emulated=true)
public final class UnsignedInteger
extends java.lang.Number
implements java.lang.Comparable<UnsignedInteger>

A wrapper class for unsigned int values, supporting arithmetic operations.

In some cases, when speed is more important than code readability, it may be faster simply to treat primitive int values as unsigned, using the methods from UnsignedInts.

See the Guava User Guide article on unsigned primitive utilities.

Since:

11.0

Author:

Louis Wasserman

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static UnsignedInteger	MAX_VALUE
static UnsignedInteger	ONE
static UnsignedInteger	ZERO

Method Summary

Modifier and Type	Method	Description
java.math.BigInteger	bigIntegerValue()	Returns the value of this UnsignedInteger as a BigInteger.
int	compareTo(UnsignedInteger other)	Compares this unsigned integer to another unsigned integer.
UnsignedInteger	dividedBy(UnsignedInteger val)	Returns the result of dividing this by val.
double	doubleValue()	Returns the value of this UnsignedInteger as a float, analogous to a widening primitive conversion from int to double, and correctly rounded.
boolean	equals(java.lang.Object obj)
float	floatValue()	Returns the value of this UnsignedInteger as a float, analogous to a widening primitive conversion from int to float, and correctly rounded.
static UnsignedInteger	fromIntBits(int bits)	Returns an UnsignedInteger corresponding to a given bit representation.
int	hashCode()
int	intValue()	Returns the value of this UnsignedInteger as an int.
long	longValue()	Returns the value of this UnsignedInteger as a long.
UnsignedInteger	minus(UnsignedInteger val)	Returns the result of subtracting this and val.
UnsignedInteger	mod(UnsignedInteger val)	Returns this mod val.
UnsignedInteger	plus(UnsignedInteger val)	Returns the result of adding this and val.
UnsignedInteger	times(UnsignedInteger val)	Returns the result of multiplying this and val.
java.lang.String	toString()	Returns a string representation of the UnsignedInteger value, in base 10.
java.lang.String	toString(int radix)	Returns a string representation of the UnsignedInteger value, in base radix.
static UnsignedInteger	valueOf(long value)	Returns an UnsignedInteger that is equal to value, if possible.
static UnsignedInteger	valueOf(java.lang.String string)	Returns an UnsignedInteger holding the value of the specified String, parsed as an unsigned int value.
static UnsignedInteger	valueOf(java.lang.String string, int radix)	Returns an UnsignedInteger holding the value of the specified String, parsed as an unsigned int value in the specified radix.
static UnsignedInteger	valueOf(java.math.BigInteger value)	Returns a UnsignedInteger representing the same value as the specified BigInteger.

Methods inherited from class java.lang.Number

byteValue, shortValue

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

ZERO

public static final UnsignedInteger ZERO

ONE

public static final UnsignedInteger ONE

MAX_VALUE

public static final UnsignedInteger MAX_VALUE

Method Detail

fromIntBits

public static UnsignedInteger fromIntBits(int bits)

Returns an UnsignedInteger corresponding to a given bit representation. The argument is interpreted as an unsigned 32-bit value. Specifically, the sign bit of bits is interpreted as a normal bit, and all other bits are treated as usual.

If the argument is nonnegative, the returned result will be equal to bits, otherwise, the result will be equal to 2^32 + bits.

To represent unsigned decimal constants, consider valueOf(long) instead.

Since:

14.0

valueOf

public static UnsignedInteger valueOf(long value)

Returns an UnsignedInteger that is equal to value, if possible. The inverse operation of longValue().

valueOf

public static UnsignedInteger valueOf(java.math.BigInteger value)

Returns a UnsignedInteger representing the same value as the specified BigInteger. This is the inverse operation of bigIntegerValue().

Throws:

java.lang.IllegalArgumentException - if value is negative or value >= 2^32

valueOf

public static UnsignedInteger valueOf(java.lang.String string)

Returns an UnsignedInteger holding the value of the specified String, parsed as an unsigned int value.

Throws:

java.lang.NumberFormatException - if the string does not contain a parsable unsigned int value

valueOf

public static UnsignedInteger valueOf(java.lang.String string,
                                      int radix)

Returns an UnsignedInteger holding the value of the specified String, parsed as an unsigned int value in the specified radix.

Throws:

java.lang.NumberFormatException - if the string does not contain a parsable unsigned int value

plus

public UnsignedInteger plus(UnsignedInteger val)

Returns the result of adding this and val. If the result would have more than 32 bits, returns the low 32 bits of the result.

Since:

14.0

minus

public UnsignedInteger minus(UnsignedInteger val)

Returns the result of subtracting this and val. If the result would be negative, returns the low 32 bits of the result.

Since:

14.0

times

@GwtIncompatible
public UnsignedInteger times(UnsignedInteger val)

Returns the result of multiplying this and val. If the result would have more than 32 bits, returns the low 32 bits of the result.

Since:

14.0

dividedBy

public UnsignedInteger dividedBy(UnsignedInteger val)

Returns the result of dividing this by val.

Throws:

java.lang.ArithmeticException - if val is zero

Since:

14.0

mod

public UnsignedInteger mod(UnsignedInteger val)

Returns this mod val.

Throws:

java.lang.ArithmeticException - if val is zero

Since:

14.0

intValue

public int intValue()

Returns the value of this UnsignedInteger as an int. This is an inverse operation to fromIntBits(int).

Note that if this UnsignedInteger holds a value >= 2^31, the returned value will be equal to this - 2^32.

Specified by:

intValue in class java.lang.Number

longValue

public long longValue()

Returns the value of this UnsignedInteger as a long.

Specified by:

longValue in class java.lang.Number

floatValue

public float floatValue()

Returns the value of this UnsignedInteger as a float, analogous to a widening primitive conversion from int to float, and correctly rounded.

Specified by:

floatValue in class java.lang.Number

doubleValue

public double doubleValue()

Returns the value of this UnsignedInteger as a float, analogous to a widening primitive conversion from int to double, and correctly rounded.

Specified by:

doubleValue in class java.lang.Number

bigIntegerValue

public java.math.BigInteger bigIntegerValue()

Returns the value of this UnsignedInteger as a BigInteger.

compareTo

public int compareTo(UnsignedInteger other)

Compares this unsigned integer to another unsigned integer. Returns 0 if they are equal, a negative number if this < other, and a positive number if this > other.

Specified by:

compareTo in interface java.lang.Comparable<UnsignedInteger>

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(@CheckForNull
                      java.lang.Object obj)

Overrides:

equals in class java.lang.Object

toString

public java.lang.String toString()

Returns a string representation of the UnsignedInteger value, in base 10.

Overrides:

toString in class java.lang.Object

toString

public java.lang.String toString(int radix)

Returns a string representation of the UnsignedInteger value, in base radix. If radix < Character.MIN_RADIX or radix > Character.MAX_RADIX, the radix 10 is used.