Hey, I want to use the function of "SCIPcreateExprPow". It is not available currently.

Therefore, I want to add it by my self.

pub(crate) fn create_pow_expr(
&mut self,
base: &Variable,
exponent: f64,
) -> Result<Expr, Retcode> {
let mut expr_ptr = MaybeUninit::uninit();
scip_call! { ffi::SCIPcreateExprPow(
self.raw,
expr_ptr.as_mut_ptr(),
base.raw as *mut _,
exponent,
None,
std::ptr::null_mut(),
) };

    let expr_ptr = unsafe { expr_ptr.assume_init() };
    Ok(Expr { raw: expr_ptr })
}

pub fn add_pow_expr(&mut self, base: &Variable, exponent: f64) -> Rc {
let exp = self
.scip
.create_pow_expr(base, exponent)
.expect("Failed to create express power in state ProblemCreated");
let exp_rc = Rc::new(exp);
return exp_rc;
}

Here is an example to utilize it,

// Create model
let mut model = Model::new()
.hide_output()
.include_default_plugins()
.create_prob("test")
.set_obj_sense(ObjSense::Maximize);

  // Add variables
  let x1 = model.add_var(0., f64::INFINITY, 3., "x1", VarType::Integer);
  let xx = model.add_pow_expr(&x1, 2.0);

  model.add_cons(
    vec![x1.clone(), **xx.clone()**],
    &[2., 1.],
    -f64::INFINITY,
    100.,
    "c1",
);

I found that I cannot utilize it in model.add_cons .
Is any suggestion?

Thank you!
Young