cern.jet.math.tfloat

Class FloatPlusMultFirst

java.lang.Object

cern.jet.math.tfloat.FloatPlusMultFirst

All Implemented Interfaces:

FloatFloatFunction

public final class FloatPlusMultFirst
extends java.lang.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

Fields

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

Method Summary

Modifier and Type	Method and Description
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.