Class: SquareMatrix

• Inheritance
• Description
• Class protocol
  • instance creation
• Instance protocol
  • matrix operations
  • queries

Inheritance:

   Object
   |
   +--Collection
      |
      +--SequenceableCollection
         |
         +--AbstractMultidimensionalArray
            |
            +--AbstractMatrix
               |
               +--Matrix
                  |
                  +--SquareMatrix
                     |
                     +--Matrix2_2
                     |
                     +--Matrix3_3

Package:

stx:libbasic2

Category:

Collections-MultiDimensional

Version:

rev: 1.7 date: 2023/06/03 12:32:43

user: cg

file: SquareMatrix.st directory: libbasic2

module: stx stc-classLibrary: libbasic2

Description:

documentation to be added.

class:
    <a short class summary here, describing what instances represent>

responsibilities:    
    <describing what my main role is>

collaborators:    
    <describing with whom and how I talk to>

API:
    <public api and main messages>
    
example:
    <a one-line examples on how to use - can also be in a separate example method>

implementation:
    <implementation points>


[instance variables:]

[class variables:]

copyright
COPYRIGHT (c) 2019 by eXept Software AG
             All Rights Reserved

This software is furnished under a license and may be used
only in accordance with the terms of that license and with the
inclusion of the above copyright notice.  This software may not
be provided or otherwise made available to, or used by, any
other person.  No title to or ownership of the software is
hereby transferred.

Class protocol:

 newForRows: nRows

SquareMatrix newForRows:3

 withAll: elements

Matrix3_3 withAll:#(11 12 13 21 22 23 31 32 33)

Instance protocol:

 determinant

Answer the determinant of this matrix.

Note that if your only interest in the determinant is to decide whether or not the matrix is singular,
you're better off using #isSingular which is not subject to numeric overflow.

Usage example(s):

^ self determinantByLuDecomposition

Usage example(s):

(Matrix identity:3) determinant |m| m := (Matrix[3][3]) contents:#(3 2 4 2 -5 -1 1 -2 2). self assert:(m determinant = -42).

 determinantByCofactors

Answer the determinant of this matrix.

 isSquare

true if this is a square matrix