InvertSquare results are incorrect

[UsualCobbler]

Used InvertSquare to invert a 4x4 matrix, and the results are incorrect.

Results should be:

[BurksEngineering]

Thank you for reporting! It looks like you are using the Array2DStaticMatrix. It does not look like I have any Unit Tests for that implementation in the project, so it is no surprise that something slipped through the cracks. My suspicion is that:

• Something about the lower bound of the array being 1 instead of 0 is not being properly accounted for (try starting at zero for a potential quick fix)
• Something about rows vs columns is being misinterpreted?

My recommendation as a first step, until I can put a Unit Test in, is to print out the contents of the M_Temp matrix to a CSV file with this utility, to understand if your input data is being represented in memory properly: https://github.com/BurksEngineering/TcMatrix/blob/main/TcMatrix/TcMatrix/POUs/Csv/MatrixCsvWriter.TcPOU