() by Conrad and myself has been cited 697 times according to Google Scholar. This versions updates to the 15.4.0 upstream so this announcement post comes a little later than usual. The package has also been updated for All changes since the last CRAN release follow. Changes in RcppArmadillo version 15.4.0-1 (2026-06-17) Upgraded to Armadillo release 15.4.0 (Medium Roast Agave) Added fill::nan, fill::pos_inf, fill::neg_inf as optional fill forms for the Mat class Added .push_back() for append...

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