Function IpoptCreateSolver 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn IpoptCreateSolver(
    prob_handle: *mut IpoptProblem,
) -> IpoptSolver

Build an IpoptSolver session from a configured IpoptProblem. Consumes the IpoptProblem on success: the pointer at *prob_handle is set to NULL and ownership transfers to the returned IpoptSolver. The user should not use the original handle again, though calling crate::FreeIpoptProblem on the now-null pointer is harmless (it null-checks).

Returns NULL if prob_handle is NULL, *prob_handle is NULL, or the IpoptProblem hasn’t been fully initialized.

Safety

prob_handle must be a valid pointer to an IpoptProblem previously returned by crate::CreateIpoptProblem (or NULL).