com.singularsys.extensions.matrix.doublemat

Class DoubleVector

java.lang.Object

com.singularsys.extensions.matrix.doublemat.DoubleVector

All Implemented Interfaces:

VectorI

public final class DoubleVector
extends java.lang.Object
implements VectorI

A vector where the elements are doubles

Field Summary

Fields

Modifier and Type	Field and Description
double[]	data
int	nrows

Constructor Summary

Constructors

Constructor and Description
DoubleVector(double[] data)

Method Summary

Modifier and Type	Method and Description
boolean	eq(DoubleVector vec)
boolean	equals(java.lang.Object obj) Uses the Double.equals() rather than == for compatibility with hashcode.
Dimensions	getDimensions() Gets the dimensions of the Vector or Matrix
java.lang.Double	getEle(int i) Gets the i-th element of a vector
int	getNEles() Gets the number of elements of a vector
int	hashCode()
static DoubleVector	newInstance(double[] in)
static DoubleVector	newInstance(java.lang.Double[] in)
void	setEle(int index, java.lang.Object val) Sets an element of a vector.
double[]	toArray()
java.lang.Object[]	toArray(java.lang.Object[] vec)
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

data

public final double[] data

nrows

public final int nrows

Constructor Detail

DoubleVector

public DoubleVector(double[] data)

Parameters:

data -

Method Detail

newInstance

public static DoubleVector newInstance(java.lang.Double[] in)

newInstance

public static DoubleVector newInstance(double[] in)

getEle

public java.lang.Double getEle(int i)

Description copied from interface: VectorI

Gets the i-th element of a vector

Specified by:

getEle in interface VectorI

Parameters:

i - index (starts from 0)

Returns:

the i-th element

setEle

public void setEle(int index,
                   java.lang.Object val)
            throws EvaluationException

Description copied from interface: VectorI

Sets an element of a vector.

Specified by:

setEle in interface VectorI

Throws:

EvaluationException

getNEles

public int getNEles()

Description copied from interface: VectorI

Gets the number of elements of a vector

Specified by:

getNEles in interface VectorI

Returns:

the number of elements

getDimensions

public Dimensions getDimensions()

Description copied from interface: VectorI

Gets the dimensions of the Vector or Matrix

Specified by:

getDimensions in interface VectorI

Returns:

the dimensions

toArray

public double[] toArray()

eq

public boolean eq(DoubleVector vec)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

toArray

public java.lang.Object[] toArray(java.lang.Object[] vec)
                           throws EvaluationException

Specified by:

toArray in interface VectorI

Throws:

EvaluationException

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Uses the Double.equals() rather than == for compatibility with hashcode. Hence NaN equals NaN and -0.0 equals 0.0. Use eq(DoubleVector) for comparison using ==.

Overrides:

equals in class java.lang.Object