Thread-Safe C++ Port of the 'trust' Trust Region Optimizer R package RcppTrust version 0.1.0 CRAN Task View: Optimization (https://CRAN.R-project.org/view=Optimization) Does local optimization using two derivatives and trust regions. Guaranteed to converge to a local minimum of the objective function. This is a thread-safe C++ port of the algorithm in the 'trust' package by Charles J. Geyer, exposed both as a drop-in R function and as a C-callable, thread-safe entry point (with function pointers registered for other packages to call without linking against this package's shared library) so it can be used from parallel C++ code such as in 'nlmixr2est'. Software Depends: R (>= 4.2.0) Imports: Rcpp LinkingTo: Rcpp, RcppArmadillo, BH Suggests: testthat (>= 3.0.0), stats, knitr, rmarkdown, trust, microbenchmark Matthew Fidler <matthew.fidler@gmail.com> Comprehensive R Archive Network (CRAN) Charles J. Geyer [aut] (ORCID: <https://orcid.org/0000-0003-1471-1703>), Matthew Fidler [aut, cre] (ORCID: <https://orcid.org/0000-0001-8538-6691>) MIT + file LICENSE (https://CRAN.R-project.org/package=RcppTrust/LICENSE) 2026-09-07 application/tgz https://CRAN.R-project.org/package=RcppTrust doi:10.32614/CRAN.package.RcppTrust