Function level_new 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn level_new(
    order_side: OrderSideOptional,
    price: Price,
    orders: CVec,
) -> *mut BookLevel

Safety

orders must uniquely own a valid Vec<BookOrderFfi> allocation transferred from Rust.

Panics

Panics if order_side is NoOrderSide.

Returns an owning pointer to the heap-allocated BookLevel which the caller must eventually pass to level_drop.