MAX_
The furthest out in the logit variable that integration can go when the quantile function is parameterized by the probability rather than by the logit.
A probability supplied as a double cannot recover its own logit near either endpoint, because the complement of a probability close to one is quantized to multiples of machine epsilon. Past this limit the round trip error makes the integrand behave like a staircase rather than a smooth function, and the quadrature stops converging altogether. The limit corresponds to reaching about two parts in a billion from each endpoint, so a moment obtained this way carries a truncation error of that order even for a bounded integrand. The logit-parameterized entry points do not have this restriction.