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+.. highlight:: cpp
+
+.. _lang-longcast:
+
+``long()`` (cast)
+=================
+
+Converts a value to the :ref:`long <lang-long>` data type.  Here is
+an example::
+
+    double d = 2.5;
+    long i = long(d); // i holds "2L", an long value
+
+The value inside of the parentheses (``long(...)``) can be of any type.
+However, if it is not a numeric type (like ``double``, ``char``,
+etc.), you will get strange results.
+
+See the :ref:`long <lang-long>` reference for details about the
+precision and limitations of ``long`` variables on the Maple.
+
+See Also
+--------
+
+- :ref:`long <lang-long>`
+- :ref:`long long <lang-longlong>`
+
+.. include:: /arduino-cc-attribution.txt