Maximum Entropy Species Distribution Modeling ('C++' Implementation) // 'C++' implementation of Maximum Entropy (Maxent) species distribution modeling with R bindings via 'Rcpp'. Provides a high-performance reimplementation of the Maxent algorithm for modeling species geographic distributions from occurrence data and environmental variables, following Phillips et al. (2006) doi:10.1016/j.ecolmodel.2005.03.026. Supports linear, quadratic, product, hinge, and threshold feature transformations, spatial projection in raw, logistic, and cloglog scales, and model diagnostics including Area Under the ROC Curve (AUC), variable importance, response curves, and Multivariate Environmental Similarity Surfaces (MESS) maps.