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diff --git a/gmp/mpf/set_d.c b/gmp/mpf/set_d.c
new file mode 100644
index 00000000..d72865dd
--- /dev/null
+++ b/gmp/mpf/set_d.c
@@ -0,0 +1,50 @@
+/* mpf_set_d -- Assign a float from a double.
+
+Copyright 1993, 1994, 1995, 1996, 2001, 2003, 2004 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 "config.h"
+
+#if HAVE_FLOAT_H
+#include <float.h>  /* for DBL_MAX */
+#endif
+
+#include "gmp.h"
+#include "gmp-impl.h"
+
+void
+mpf_set_d (mpf_ptr r, double d)
+{
+  int negative;
+
+  DOUBLE_NAN_INF_ACTION (d,
+                         __gmp_invalid_operation (),
+                         __gmp_invalid_operation ());
+
+  if (UNLIKELY (d == 0))
+    {
+      SIZ(r) = 0;
+      EXP(r) = 0;
+      return;
+    }
+  negative = d < 0;
+  d = ABS (d);
+
+  SIZ(r) = negative ? -LIMBS_PER_DOUBLE : LIMBS_PER_DOUBLE;
+  EXP(r) = __gmp_extract_double (PTR(r), d);
+}