[vera-rubin]

norm('max') (6.15.0) returns -1 for [[-2, -1]], but the max norm definition calls for the largest absolute entry, 2.

const { Matrix } = require('ml-matrix');
new Matrix([[-2, -1]]).norm('max'); // -1 before this change

We now take absolute values on a copy before finding the maximum, leaving the input matrix unchanged. We've added a regression test for negative and mixed-sign entries and checked it alongside the full test suite, lint, formatting and build.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 68.88%. Comparing base (1a4a05a) to head (a252b72).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #223   +/-   ##
=======================================
  Coverage   68.88%   68.88%           
=======================================
  Files          49       49           
  Lines        5904     5904           
  Branches     1060     1060           
=======================================
  Hits         4067     4067           
  Misses       1824     1824           
  Partials       13       13           

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