cern.jet.math.tfloat
Class FloatPlusMultFirst

java.lang.Object
  cern.jet.math.tfloat.FloatPlusMultFirst

All Implemented Interfaces:

FloatFloatFunction

public final class FloatPlusMultFirst
extends Object
implements FloatFloatFunction

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

float

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

Method Summary

float	apply(float a, float b) Returns the result of the function evaluation.
static FloatPlusMultFirst	minusDiv(float constant) a/constant - b.
static FloatPlusMultFirst	minusMult(float constant) a*constant - b.
static FloatPlusMultFirst	plusDiv(float constant) a/constant + b.
static FloatPlusMultFirst	plusMult(float constant) a*constant + b.

Methods inherited from class java.lang.Object

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

Field Detail

multiplicator

public float multiplicator

Public read/write access to avoid frequent object construction.

Method Detail

apply

public final float apply(float a,
                         float b)

Returns the result of the function evaluation.

Specified by:

apply in interface FloatFloatFunction

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 FloatPlusMultFirst minusDiv(float constant)

a/constant - b.

minusMult

public static FloatPlusMultFirst minusMult(float constant)

a*constant - b.

plusDiv

public static FloatPlusMultFirst plusDiv(float constant)

a/constant + b.

plusMult

public static FloatPlusMultFirst plusMult(float constant)

a*constant + b.