MINOR: [Docs] document Float16 support in C++ (#38494)

### Rationale for this change There is, at least, partial halffloat support in Arrow C++. A reason to not merge this is that there is still quite a bit casting work to be completed: * #20213 * #32802 Authored-by: anjakefala <[email protected]> Signed-off-by: Antoine Pitrou <[email protected]>
apache · Nov 16, 2023 · 62cf42b · 62cf42b
1 parent 0e52d30
commit 62cf42b
Showing 1 changed file with 5 additions and 4 deletions.
diff --git a/docs/source/status.rst b/docs/source/status.rst
@@ -40,7 +40,7 @@ Data Types
 +-------------------+-------+-------+-------+------------+-------+-------+-------+-------+
 | UInt8/16/32/64    | ✓     | ✓     | ✓     | ✓          |  ✓    |  ✓    | ✓     | ✓     |
 +-------------------+-------+-------+-------+------------+-------+-------+-------+-------+
-| Float16           |       |       | ✓     | ✓          |  ✓ (1)|  ✓    | ✓     |       |
+| Float16           | ✓ (1) |       | ✓     | ✓          |  ✓ (2)|  ✓    | ✓     |       |
 +-------------------+-------+-------+-------+------------+-------+-------+-------+-------+
 | Float32/64        | ✓     | ✓     | ✓     | ✓          |  ✓    |  ✓    | ✓     | ✓     |
 +-------------------+-------+-------+-------+------------+-------+-------+-------+-------+
@@ -96,7 +96,7 @@ Data Types
 | Data type         | C++   | Java  | Go    | JavaScript | C#    | Rust  | Julia | Swift |
 | (special)         |       |       |       |            |       |       |       |       |
 +===================+=======+=======+=======+============+=======+=======+=======+=======+
-| Dictionary        | ✓     | ✓ (2) | ✓     | ✓          | ✓ (2) | ✓ (2) | ✓     |       |
+| Dictionary        | ✓     | ✓ (3) | ✓     | ✓          | ✓ (3) | ✓ (3) | ✓     |       |
 +-------------------+-------+-------+-------+------------+-------+-------+-------+-------+
 | Extension         | ✓     | ✓     | ✓     |            |       | ✓     | ✓     |       |
 +-------------------+-------+-------+-------+------------+-------+-------+-------+-------+
@@ -105,8 +105,9 @@ Data Types
 
 Notes:
 
-* \(1) Float16 support in C# is only available when targeting .NET 6+.
-* \(2) Nested dictionaries not supported
+* \(1) Casting to/from Float16 in C++ is not supported.
+* \(2) Float16 support in C# is only available when targeting .NET 6+.
+* \(3) Nested dictionaries not supported
 
 .. seealso::
    The :ref:`format_columnar` specification.