Package coin-or-Ipopt

https://coin-or.github.io/Ipopt/

Ipopt (Interior Point OPTimizer, pronounced eye-pea-Opt) is a software
package for large-scale nonlinear optimization. It is designed to find
(local) solutions of mathematical optimization problems of the form

   min     f(x)
x in R^n

s.t.       g_L <= g(x) <= g_U
           x_L <=  x   <= x_U

where f(x): R^n --> R is the objective function, and g(x): R^n --> R^m are
the constraint functions. The vectors g_L and g_U denote the lower and upper
bounds on the constraints, and the vectors x_L and x_U are the bounds on
the variables x. The functions f(x) and g(x) can be non-linear and non-convex,
but should be twice continuously differentiable. Note that equality
constraints can be formulated in the above formulation by setting the
corresponding components of g_L and g_U to the same value.

Version: 3.14.16