[Numpy-discussion] [ANN] NLopt, a nonlinear optimization library

Steven G. Johnson stevenj@alum.mit....
Thu Jun 17 00:26:15 CDT 2010

The NLopt library, available from


provides a common interface for a large number of algorithms for both 
global and local nonlinear optimizations, both with and without gradient 
information, and including both bound constraints and nonlinear 
equality/inequality constraints.

NLopt is written in C, but now includes a Python interface (as well as 
interfaces for C++, Fortran, Matlab, Octave, and Guile).

It is free software under the GNU LGPL.

Steven G. Johnson

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