* Optimize `det`
Use Bareiss algorithm.
The performance is preserved but lessen the round-off errors.
* Optimize `det`
Use index mapping instead of swapping the rows directly.
Run the benchmark to compare the performance.
* Edit test file
Replace `approx.equal` with `assert.strictEqual`.
The test will fail with the previously implemented LU decomposition.
Co-authored-by: Glen Whitney <glen@studioinfinity.org>
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