libcgrpp: A Python/C library for box-constrained global optimization with continuous GRASP
Ricardo M. A. Silva, Mauricio G. C. Resende, and Panos M. Pardalos
libcgrpp is a library for solving problems of the type: min F(X) subject to L leq X leq U, where X, L, and U are real n-vectors and F is a function that maps points in the real n-dim space to the real line.  There is no constraint on F.  For example, F can be non-smooth and highly non-linear. libcgrpp was implemented as an embedded Python-in-C code to take advantage of the simplicity offered by the Python programming language in implementing complex multimodal functions. Besides having access to the extensive standard library of Python, any non-standard module or library, such as SymPy can be used to implement a function. An important feature of the library is that the functions implemented in Python are loaded automatically without the need to recompile any code.
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Note: libcgrpp can be used freely for research purposes.  Commercial use may require a license.