Parallel Colt 0.7.2

cern.jet.math.tdouble
Class DoublePlusMultFirst

java.lang.Object
  extended by cern.jet.math.tdouble.DoublePlusMultFirst
All Implemented Interfaces:
DoubleDoubleFunction

public final class DoublePlusMultFirst
extends Object
implements DoubleDoubleFunction

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

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 DoublePlusMultFirst minusDiv(double constant)
          a - b/constant.
static DoublePlusMultFirst minusMult(double constant)
          a - b*constant.
static DoublePlusMultFirst plusDiv(double constant)
          a + b/constant.
static DoublePlusMultFirst 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 DoubleDoubleFunction
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 DoublePlusMultFirst minusDiv(double constant)
a - b/constant.


minusMult

public static DoublePlusMultFirst minusMult(double constant)
a - b*constant.


plusDiv

public static DoublePlusMultFirst plusDiv(double constant)
a + b/constant.


plusMult

public static DoublePlusMultFirst plusMult(double constant)
a + b*constant.


Parallel Colt 0.7.2

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