org.apache.giraph.types.ops

Interface NumericTypeOps<T>

Type Parameters:

T - Type

All Superinterfaces:

TypeOps<T>

All Known Implementing Classes:

ByteTypeOps, DoubleTypeOps, FloatTypeOps, IntTypeOps, LongTypeOps

public interface NumericTypeOps<T>
extends TypeOps<T>

Numeric type operations, allowing working generically with types, but still having efficient code. Using any of the provided operations should lead to no boxing/unboxing.

Method Summary

Modifier and Type	Method and Description
int	compare(T value1, T value2) Compare two values
T	createMaxPositiveValue() Maximal positive value representable via current type.
T	createMinNegativeValue() Minimal negative value representable via current type.
T	createOne() Value of one
T	createZero() Value of zero
void	multiplyInto(T value, T multiplier) value*=multiplier
void	negate(T value) -value
void	plusInto(T value, T increment) value+=adder

Methods inherited from interface org.apache.giraph.types.ops.TypeOps

create, createCopy, getTypeClass, set

Method Detail

createZero

T createZero()

Value of zero

Returns:

New object with value of zero

createOne

T createOne()

Value of one

Returns:

New object with value of one

createMinNegativeValue

T createMinNegativeValue()

Minimal negative value representable via current type. Negative infinity for floating point numbers.

Returns:

New object with min negative value

createMaxPositiveValue

T createMaxPositiveValue()

Maximal positive value representable via current type. Positive infinity for floating point numbers.

Returns:

New object with max positive value

plusInto

void plusInto(T value,
              T increment)

value+=adder

Parameters:

value - Value to modify

increment - Increment

multiplyInto

void multiplyInto(T value,
                  T multiplier)

value*=multiplier

Parameters:

value - Value to modify

multiplier - Multiplier

negate

void negate(T value)

-value

Parameters:

value - Value to negate

compare

int compare(T value1,
            T value2)

Compare two values

Parameters:

value1 - First value

value2 - Second value

Returns:

0 if values are equal, negative value if value1<value2 and positive value if value1>value2