From a378748cc618a6e32d03a48b498a9e6a9eb7838c Mon Sep 17 00:00:00 2001
From: Ryan Lehmkuhl <ryanleh.ob@gmail.com>
Date: Mon, 19 Apr 2021 03:07:28 +0000
Subject: [PATCH] Add warning for float->string conversions.

Closes #211
---
 docs/src/usage/functionality.rst | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/docs/src/usage/functionality.rst b/docs/src/usage/functionality.rst
index 7e67d16870..b97ad883bd 100644
--- a/docs/src/usage/functionality.rst
+++ b/docs/src/usage/functionality.rst
@@ -21,6 +21,8 @@ Out of the existing `Spark SQL types <https://spark.apache.org/docs/latest/sql-r
 - ``TimestampTime``, ``DateType``
 - ``ArrayType``, ``MapType``
 
+*Warning:* Conversions from ``FloatType`` to ``StringType`` may produce incorrect results in the least significant portion of the floating point value.  See `this issue <https://github.com/mc2-project/opaque/issues/211>`_ for further details.
+
 Functions
 *********