Annotate noexcept and constexpr with HEDLEY, and add interval containment, ChaCha, and the dyadic range tables.

Co-authored-by: Cursor <cursoragent@cursor.com>

include/dpf/eval_point.hpp

@@ -1,6 +1,11 @@
 /// @file dpf/eval_point.hpp
-/// @brief
-/// @details
+/// @brief Evaluate one DPF input.
+/// @details `eval_point(key, x)` returns a handle; `*handle` is that party's
+///          share of output 0. `eval_point<I>` selects another output.
+///          `eval_point<I0, I1, ...>` returns a tuple of shares.
+///          Pass a `basic_path_memoizer` lvalue to resume a previous path.
+///          An unassigned wildcard output throws `std::runtime_error`.
+///          @snippet evaluation/eval_point.cpp eval-point
 /// @author Ryan Henry <ryan.henry@ucalgary.ca>
 /// @author Christopher Jiang <christopher.jiang@ucalgary.ca>
 /// @copyright Copyright (c) 2019-2024 Ryan Henry and [others](@ref authors)
@@ -72,6 +77,10 @@ auto eval_point(const DpfKey & dpf, InputT && x, PathMemoizer && path)
 
 }  // namespace internal
 
+/// Evaluate output `I` at `x`.
+/// @param path Mutable path memoizer. The default is a fresh
+///        nonmemoizing workspace for this call.
+/// @return Handle whose `operator*` is the party's share.
 template <std::size_t I = 0,
           typename DpfKey,
           typename InputT,
@@ -88,6 +97,8 @@ auto eval_point(const DpfKey & dpf, InputT && x, PathMemoizer && path = PathMemo
         internal::eval_point<I>(dpf, tx, path), tx);
 }
 
+/// Evaluate several outputs at `x`.
+/// @return Tuple of shares, already dereferenced.
 template <std::size_t I0,
           std::size_t I1,
           std::size_t ...Is,