Macro new_op3_opt

macro_rules! new_op3_opt {
    ($s:ident, $name:expr, $(($t1:ident, $t2:ident, $t3:ident) -> $rt:ident { $f:expr }),*) => { ... };
}

Defines a macro that simplifies the creation and implementation of three-input (ternary) operations with optional functionality.

This macro-rule is structured to declare and implement a new ternary operation by accepting an identifier, a name, and a sequence of type transformations that results in a function. It leverages other internal macros, such as impl_basic! and impl_op3_opt!, to automatically generate and bind necessary implementations. The impl_basic! macro assists in setting up basic structure and namespacing for the operation, while impl_op3_opt! is likely responsible for the implementation details and handling optional features across different inputs. The macro also implements the Enumerator3 trait from the forward::enumeration module for the specified identifier, providing enumeration capabilities for the new operation in a modular and reusable manner.