[boost] [constrained_value] ignore_policy, overhead?

From: Neal Becker (ndbecker2_at_[hidden])
Date: 2008-05-07 09:25:42

I'm wondering if I can selectively switch off bounds checking without
overhead?

I added:
/**
    Error policy for constrained that ignores bounds.
*/
struct ignore
{

    /// The policy invocation operator.
    /// If @a nv is below the range, assigns @c c.lower_bound() to @a ov.
    /// If @a nv is above the range, assigns @c c.upper_bound() to @a ov.
    /// Otherwise fires an assertion.
    /// @remarks @a V must be @c Assignable from @a L::result_type and @a
U::result_type.
    template <typename V, class L, class U, class C>
    void operator () (V & ov, const V & nv, const within_bounds <
        L, value_generator::integral<bool, true>,
        U, value_generator::integral<bool, true>,
        C> & c) const
    {
    }

};

I'm wondering if the this will eliminate all overhead allowing the speed of
the underlying ValueType (e.g., int)?