r-cran-lbfgsb3c binary package in Ubuntu Oracular amd64

 Interfacing to Nocedal et al. L-BFGS-B.3.0 (See
 <http://users.iems.northwestern.edu/~nocedal/lbfgsb.html>) limited
 memory BFGS minimizer with bounds on parameters. This is a fork of
 'lbfgsb3'. This registers a 'R' compatible 'C' interface to L-BFGS-B.3.0
 that uses the same function types and optimization as the optim()
 function (see writing 'R' extensions and source for details). This
 package also adds more stopping criteria as well as allowing the
 adjustment of more tolerances.

Source package