Consistent Linear Algebra API

[mikera]

I believe it is worth making a consistent API for linear algebra operations as follows:

• API classes in the mikera.matrixx.algo.* package
• Static functions
• Return an IXXXXResult for decompositions (other algorithms can return the result type directly
• Use null for failed decompositions (e.g. singular matrices etc.)

This consistent API gives us a few advantages:

• Users know where to go (it is all in one place)
• We maintain common conventions
• We hide implementation details
• We have the option to upgrade to better implementations without changing the API (and breaking downstream users....)

@prasant94 - does that make sense to you? Think it applies to most of the stuff you are importing....

[prasant94]

Yes, I like the idea of using static functions.
I suppose I should also change Cholesky according to this.