====== Namespace std::gates ======

The namespace ''std::gates'' contains a collection of gates that are commonly used in digital design.

<code act>
export template<pint N; pbool invert> defproc ortree (bool? in[N]; bool out);
</code>
This is an N-input OR tree constructed using a mixture of two and three input gates. If the ''invert'' parameter is true, this creates a NOR operation instead of an OR operation.

<code act>
export template<pint N; pbool invert> defproc andtree (bool? in[N]; bool out);
</code>
This is an N-input AND tree constructed using a mixture of two and three input gates. If the ''invert'' parameter is true, this creates a NAND operation instead of an AND operation.

<code act>
export template<pint N; pbool invert> defproc ctree (bool? in[N]; bool out);
</code>
This is an N-input completion tree (C-element tree) constructed using a mixture of two and three input gates. If the ''invert'' parameter is true, this creates a completion tree whose output is inverted.