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diff --git a/gmp/tests/mpf/t-set_ui.c b/gmp/tests/mpf/t-set_ui.c
new file mode 100644
index 00000000..fef529b7
--- /dev/null
+++ b/gmp/tests/mpf/t-set_ui.c
@@ -0,0 +1,90 @@
+/* Test mpf_set_ui and mpf_init_set_ui.
+
+Copyright 2000, 2001, 2003 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 <stdio.h>
+#include <stdlib.h>
+#include "gmp.h"
+#include "gmp-impl.h"
+#include "tests.h"
+
+void
+check_data (void)
+{
+  static const struct {
+    unsigned long  x;
+    mp_size_t      want_size;
+    mp_limb_t      want_data[2];
+  } data[] = {
+
+    {  0L,  0 },
+    {  1L,  1, { 1 } },
+
+#if GMP_NUMB_BITS >= BITS_PER_ULONG
+    { ULONG_MAX,     1, { ULONG_MAX, 0 } },
+    { ULONG_HIGHBIT, 1, { ULONG_HIGHBIT, 0 } },
+#else
+    { ULONG_MAX,     2, { ULONG_MAX & GMP_NUMB_MASK,
+                          ULONG_MAX >> GMP_NUMB_BITS } },
+    { LONG_HIGHBIT,  2, { 0,
+                          ULONG_HIGHBIT >> GMP_NUMB_BITS } },
+#endif
+  };
+
+  mpf_t  x;
+  int    i;
+
+  for (i = 0; i < numberof (data); i++)
+    {
+      mpf_init (x);
+      mpf_set_ui (x, data[i].x);
+      MPF_CHECK_FORMAT (x);
+      if (x->_mp_size != data[i].want_size
+          || refmpn_cmp_allowzero (x->_mp_d, data[i].want_data,
+                                   ABS (data[i].want_size)) != 0
+          || x->_mp_exp != ABS (data[i].want_size))
+        {
+          printf ("mpf_set_ui wrong on data[%d]\n", i);
+          abort();
+        }
+      mpf_clear (x);
+
+      mpf_init_set_ui (x, data[i].x);
+      MPF_CHECK_FORMAT (x);
+      if (x->_mp_size != data[i].want_size
+          || refmpn_cmp_allowzero (x->_mp_d, data[i].want_data,
+                                   ABS (data[i].want_size)) != 0
+          || x->_mp_exp != ABS (data[i].want_size))
+        {
+          printf ("mpf_init_set_ui wrong on data[%d]\n", i);
+          abort();
+        }
+      mpf_clear (x);
+    }
+}
+
+int
+main (void)
+{
+  tests_start ();
+
+  check_data ();
+
+  tests_end ();
+  exit (0);
+}