matrex

Leverages CBLAS sgemm() for matrix multiplication, making it up to thousands of times faster than pure-Elixir libraries like Matrix and Numexy, as shown in benchmark comparisons.

Memory-efficient design supports matrices with up to a billion elements, enabling large-scale numerical computing within the BEAM ecosystem without excessive memory overhead.

Implements the Inspect protocol with heatmap display, allowing for easy matrix visualization directly in the IEx console, as demonstrated with MNIST digit examples in the README.

Supports fast binary (.mtx) and CSV formats for saving and loading, with CSV compatibility to GNU Octave for straightforward data exchange between systems.

Handles NaN, Inf, and -Inf within matrices, converting them to atoms (:nan, :inf) when accessed in Elixir, ensuring proper integration with BEAM's float handling limitations.