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diff --git a/gmp/mpf/get_prc.c b/gmp/mpf/get_prc.c
new file mode 100644
index 00000000..6061063a
--- /dev/null
+++ b/gmp/mpf/get_prc.c
@@ -0,0 +1,27 @@
+/* mpf_get_prec(x) -- Return the precision in bits of x.
+
+Copyright 1996, 2000, 2001 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP Library is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at your
+option) any later version.
+
+The GNU MP Library is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.  */
+
+#include "gmp.h"
+#include "gmp-impl.h"
+
+unsigned long int
+mpf_get_prec (mpf_srcptr x)
+{
+  return __GMPF_PREC_TO_BITS (x->_mp_prec);
+}