Add link to the gmpy project.

freddrake · freddrake · commit b40501b05e78 · 2001-12-15T18:37:24.000Z
diff --git a/Doc/lib/libmpz.tex b/Doc/lib/libmpz.tex
@@ -96,3 +96,11 @@ \section{\module{mpz} ---
   The mpz-number must have a value greater than or equal to zero,
   otherwise \exception{ValueError} will be raised.
 \end{methoddesc}
+
+
+\begin{seealso}
+  \seetitle[http://gmpy.sourceforge.net/]{General Multiprecision Python}{
+            This project is building new numeric types to allow
+            arbitrary-precision arithmetic in Python.  Their first
+            efforts are also based on the GNU MP library.}
+\end{seealso}
