Function CreateIpoptProblem 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn CreateIpoptProblem(
    n: Index,
    x_L: *const Number,
    x_U: *const Number,
    m: Index,
    g_L: *const Number,
    g_U: *const Number,
    nele_jac: Index,
    nele_hess: Index,
    index_style: Index,
    eval_f: Option<Eval_F_CB>,
    eval_g: Option<Eval_G_CB>,
    eval_grad_f: Option<Eval_Grad_F_CB>,
    eval_jac_g: Option<Eval_Jac_G_CB>,
    eval_h: Option<Eval_H_CB>,
) -> IpoptProblem

Port of IpStdCInterface.cpp:CreateIpoptProblem. Returns NULL on invalid arguments (negative n/m, missing required callbacks, NULL bound pointers when the corresponding dimension is positive).

Safety

x_L, x_U must be valid pointers to n Numbers when n > 0. g_L, g_U must be valid pointers to m Numbers when m > 0. The callback function pointers must be valid for the lifetime of the returned IpoptProblem.