cern.jet.math.tdcomplex
Class DComplexPlusMultFirst

java.lang.Object
  cern.jet.math.tdcomplex.DComplexPlusMultFirst

All Implemented Interfaces:

DComplexDComplexDComplexFunction

public class DComplexPlusMultFirst
extends Object
implements DComplexDComplexDComplexFunction

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

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

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

double[]

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

Method Summary

double[]	apply(double[] a, double[] b) Returns the result of the function evaluation.
static DComplexPlusMultFirst	minusDiv(double[] constant) a - b/constant.
static DComplexPlusMultFirst	minusMult(double[] constant) a - b*constant.
static DComplexPlusMultFirst	plusDiv(double[] constant) a + b/constant.
static DComplexPlusMultFirst	plusMult(double[] constant) a + b*constant.

Methods inherited from class java.lang.Object

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

Field Detail

multiplicator

public double[] multiplicator

Public read/write access to avoid frequent object construction.

Method Detail

apply

public final double[] apply(double[] a,
                            double[] b)

Returns the result of the function evaluation.

Specified by:

apply in interface DComplexDComplexDComplexFunction

Parameters:

a - the first argument passed to the function.

b - the second argument passed to the function.

Returns:

the result of the function.

minusDiv

public static DComplexPlusMultFirst minusDiv(double[] constant)

a - b/constant.

minusMult

public static DComplexPlusMultFirst minusMult(double[] constant)

a - b*constant.

plusDiv

public static DComplexPlusMultFirst plusDiv(double[] constant)

a + b/constant.

plusMult

public static DComplexPlusMultFirst plusMult(double[] constant)

a + b*constant.