palisades.lakes.bench.java.spaces.linear.r2

Class D2

java.lang.Object

palisades.lakes.bench.java.spaces.linear.r2.D2

All Implemented Interfaces:

Vector

public final class D2
extends Object
implements Vector

(Immutable) vector in R² represented by double x y coordinates.

Since:

2017-08-22

Version:

2017-09-05

Author:

palisades dot lakes at gmail dot com

Method Summary

Modifier and Type	Method and Description
static D2	generate(clojure.lang.IFn.D g) g is a 'function' of no arguments, which is expected to return a different value on each call, typically wrapping some pseudo-random number generator.
double	get0()
double	get1()
double	l1Norm() Here as a convenience.
Vector	linearCombination(Number a0, Number a1, Vector v1) Almost certainly would want scalars to be primitive, not Object references.
static D2	make(double v0, double v1)

Methods inherited from class java.lang.Object

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

Method Detail

get0

public final double get0()

get1

public final double get1()

linearCombination

public final Vector linearCombination(Number a0,
                                      Number a1,
                                      Vector v1)

Description copied from interface: Vector

Almost certainly would want scalars to be primitive, not Object references. And implementation might depend on coordinate type of Vectors, so potentially 6x6x6x6=1296 methods, more if high precision (BigInteger, Rational) reference types are included.

Here as a convenience. Doesn't belong in a vector interface, because same vector can be in many different linear spaces, with differing interpretations of linear combination.

Specified by:

linearCombination in interface Vector

l1Norm

public final double l1Norm()

Description copied from interface: Vector

Here as a convenience. Doesn't belong in a vector interface, because same vector can be in many different normed spaces.

Specified by:

l1Norm in interface Vector

make

public static final D2 make(double v0,
                            double v1)

generate

public static final D2 generate(clojure.lang.IFn.D g)

g is a 'function' of no arguments, which is expected to return a different value on each call, typically wrapping some pseudo-random number generator. Clojure unfortunately only supports functions returning primitive long and double values.