Changes in version 0.7-0 (2026-02-28) NEW FEATURES o Added the optim_lbfgsb() function for box-constrained optimization. o Multi-dimensional integration now supports infinite limits in each dimension. o Updated LBFGS++ to v0.4.0. BUG FIXES o Replaced Rf_error() with Rcpp::stop() for better error handling, thanks to @Enchufa2 (#14). Changes in version 0.6-0 (2023-09-06) NEW FEATURES o Updated LBFGS++ to v0.3.0. Changes in version 0.5-0 (2023-02-26) NEW FEATURES o Updated LBFGS++ to v0.2.0. BUG FIXES o Removed the C function sprintf() calls according to CRAN's policy. Changes in version 0.4-0 (2019-12-02) NEW FEATURES o Added one-dimensional numerical integration on infinite intervals, contributed by @rstub (#11). Changes in version 0.3-3 (2019-06-11) BUG FIXES o Updated LBFGS++ to the newest version. o Fixed the VignetteBuilder entry in the DESCRIPTION file according to CRAN's policy. Changes in version 0.3-2 (2018-02-18) BUG FIXES o Fixed a convergence test bug in LBFGS++. o Registered native routines per CRAN's policy. Changes in version 0.3-1 (2016-12-09) BUG FIXES o Fixed a bug of name hiding in C++. Changes in version 0.3-0 (2016-12-08) NEW FEATURES o Now using the LBFGS++ library for L-BFGS optimization. o Added a vignette. BUG FIXES o Fixed an index-out-of-bound bug in one dimensional integration (#1), thanks to Greg Finak. o Added virtual destructors for classes Func, MFunc, and MFuncGrad. Changes in version 0.2-0 (2016-04-23) NEW FEATURES o Added the Cuba library for multi-dimensional integration. Changes in version 0.1-0 NEW FEATURES o Initial release. o Provides C++ interface for one-dimensional numerical integration and L-BFGS optimization. o R function fastLR() for fast logistic regression using L-BFGS.