cern.jet.math.tint

Class IntPlusMultFirst

java.lang.Object

cern.jet.math.tint.IntPlusMultFirst

All Implemented Interfaces:

IntIntFunction

public final class IntPlusMultFirst
extends Object
implements IntIntFunction

Only for performance tuning of compute intensive linear algebraic computations. Constructs functions that return one of

• a + b*constant
• a - b*constant
• a + b/constant
• a - b/constant

a and b are variables, constant is fixed, but for performance reasons publicly accessible. Intended to be passed to matrix.assign(otherMatrix,function) methods.

Field Summary

Fields

Modifier and Type	Field and Description
int	multiplicator Public read/write access to avoid frequent object construction.

Method Summary

Methods

Modifier and Type	Method and Description
int	apply(int a, int b) Returns the result of the function evaluation.
static IntPlusMultFirst	minusMult(int constant) a - b*constant.
static IntPlusMultFirst	plusMult(int constant) a + b*constant.

Methods inherited from class java.lang.Object

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

Field Detail

multiplicator

public int multiplicator

Public read/write access to avoid frequent object construction.

Method Detail

apply

public final int apply(int a,
        int b)

Returns the result of the function evaluation.

Specified by:

apply in interface IntIntFunction

Parameters:

a - the first argument passed to the function.

b - the second argument passed to the function.

Returns:

the result of the function.

minusMult

public static IntPlusMultFirst minusMult(int constant)

a - b*constant.

plusMult

public static IntPlusMultFirst plusMult(int constant)

a + b*constant.