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

int	multiplicator Public read/write access to avoid frequent object construction.

Method Summary

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.