Function SetIpoptProblemScaling 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn SetIpoptProblemScaling(
    ipopt_problem: IpoptProblem,
    obj_scaling: Number,
    x_scaling: *const Number,
    g_scaling: *const Number,
) -> Bool

Port of IpStdCInterface.cpp:SetIpoptProblemScaling. Stores user-provided NLP scaling on the problem; the scaling is forwarded to the solver via TNLP::get_scaling_parameters when the option nlp_scaling_method=user-scaling is set. Passing NULL for x_scaling / g_scaling disables scaling on that axis.

Always returns TRUE.

Safety

ipopt_problem must be a valid IpoptProblem. When non-NULL, x_scaling must point to n doubles and g_scaling to m doubles; both arrays are copied internally.