Realization of Boolean Functions by Formulas in Continuous Bases Containing a Continuum of Constants

For an arbitrary Boolean function of $n$ variables, we show how to construct formulas of complexity $O(2^{n/2})$ in the bases
$$\{x-y,xy,|x|\} \cup [0,1],\qquad \{x-y,x*y,2x,|x|\} \cup [0,1],$$
where ${x*y=\max(-1,\min(1,x))\max(-1,\min(1,y))}$. The obtained estimates are, in general, order-sharp.