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diff --git a/mpfr/tests/tcmp_ui.c b/mpfr/tests/tcmp_ui.c
new file mode 100644
index 00000000..df3bafc2
--- /dev/null
+++ b/mpfr/tests/tcmp_ui.c
@@ -0,0 +1,224 @@
+/* Test file for mpfr_cmp_ui and mpfr_cmp_si.
+
+Copyright 1999, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+Contributed by the Arenaire and Cacao projects, INRIA.
+
+This file is part of the GNU MPFR Library.
+
+The GNU MPFR 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 2.1 of the License, or (at your
+option) any later version.
+
+The GNU MPFR 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 MPFR Library; see the file COPYING.LIB.  If not, write to
+the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+MA 02110-1301, USA. */
+
+#ifdef TCMP_UI_CHECK_NAN
+
+mpfr_clear_erangeflag ();
+c = mpfr_cmp_si (x, TCMP_UI_CHECK_NAN);
+if (c != 0 || !mpfr_erangeflag_p ())
+  {
+    printf ("NaN error on %d (1)\n", TCMP_UI_CHECK_NAN);
+    exit (1);
+  }
+mpfr_clear_erangeflag ();
+c = (mpfr_cmp_si) (x, TCMP_UI_CHECK_NAN);
+if (c != 0 || !mpfr_erangeflag_p ())
+  {
+    printf ("NaN error on %d (2)\n", TCMP_UI_CHECK_NAN);
+    exit (1);
+  }
+if (TCMP_UI_CHECK_NAN >= 0)
+  {
+    mpfr_clear_erangeflag ();
+    c = mpfr_cmp_ui (x, TCMP_UI_CHECK_NAN);
+    if (c != 0 || !mpfr_erangeflag_p ())
+      {
+        printf ("NaN error on %d (3)\n", TCMP_UI_CHECK_NAN);
+        exit (1);
+      }
+    mpfr_clear_erangeflag ();
+    c = (mpfr_cmp_ui) (x, TCMP_UI_CHECK_NAN);
+    if (c != 0 || !mpfr_erangeflag_p ())
+      {
+        printf ("NaN error on %d (4)\n", TCMP_UI_CHECK_NAN);
+        exit (1);
+      }
+  }
+
+#else
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "mpfr-test.h"
+
+static void
+check_nan (void)
+{
+  mpfr_t x;
+  int c, i;
+
+  mpfr_init (x);
+  mpfr_set_nan (x);
+  /* We need constants to completely test the macros. */
+#undef TCMP_UI_CHECK_NAN
+#define TCMP_UI_CHECK_NAN -17
+#include "tcmp_ui.c"
+#undef TCMP_UI_CHECK_NAN
+#define TCMP_UI_CHECK_NAN 0
+#include "tcmp_ui.c"
+#undef TCMP_UI_CHECK_NAN
+#define TCMP_UI_CHECK_NAN 17
+#include "tcmp_ui.c"
+  for (i = -17; i <= 17; i += 17)
+    {
+#undef TCMP_UI_CHECK_NAN
+#define TCMP_UI_CHECK_NAN i
+#include "tcmp_ui.c"
+    }
+  mpfr_clear (x);
+}
+
+int
+main (void)
+{
+  mpfr_t x;
+  unsigned long i;
+  long s;
+
+  tests_start_mpfr ();
+
+  mpfr_init(x);
+
+  /* tests for cmp_ui */
+  mpfr_set_ui (x, 3, GMP_RNDZ);
+  if ((mpfr_cmp_ui) (x, i = 3) != 0)
+    {
+      printf ("Error in mpfr_cmp_ui(3.0, 3)\n");
+      exit (1);
+    }
+  if (mpfr_cmp_ui (x, i = 2) <= 0)
+    {
+      printf ("Error in mpfr_cmp_ui(3.0,2)\n");
+      exit (1);
+    }
+  if (mpfr_cmp_ui (x, i = 4) >= 0)
+    {
+      printf ("Error in mpfr_cmp_ui(3.0,4)\n");
+      exit (1);
+    }
+  mpfr_set_ui (x, 0, GMP_RNDZ);
+  mpfr_neg (x, x, GMP_RNDZ);
+  if (mpfr_cmp_ui (x, i = 0))
+    {
+      printf ("Error in mpfr_cmp_ui(0.0,0)\n");
+      exit (1);
+    }
+  mpfr_set_ui (x, 1, GMP_RNDZ);
+  if (mpfr_cmp_ui (x, i = 0) == 0)
+    {
+      printf ("Error in mpfr_cmp_ui(1.0,0)\n");
+      exit (1);
+    }
+
+  mpfr_set_inf (x, 1);
+  if (mpfr_cmp_ui (x, 1) <= 0)
+    {
+      printf ("Error in mpfr_cmp_ui (Inf, 0)\n");
+      exit (1);
+    }
+  mpfr_set_inf (x, -1);
+  if (mpfr_cmp_ui (x, 1) >= 0)
+    {
+      printf ("Error in mpfr_cmp_ui (-Inf, 0)\n");
+      exit (1);
+    }
+
+  mpfr_set_si (x, -1, GMP_RNDN);
+  MPFR_ASSERTN(mpfr_cmp_ui (x, 1) < 0);
+  MPFR_ASSERTN(mpfr_cmp_ui (x, 0) < 0);
+
+  mpfr_set_ui (x, 1, GMP_RNDN);
+  MPFR_ASSERTN(mpfr_cmp_ui (x, 0) > 0);
+
+  /* tests for cmp_si */
+  (mpfr_set_si) (x, -3, GMP_RNDZ);
+  if ((mpfr_cmp_si) (x, s = -3) != 0)
+    {
+      printf ("Error in mpfr_cmp_si(-3.0,-3)\n");
+      exit (1);
+    }
+  if (mpfr_cmp_si (x, s = -4) <= 0)
+    {
+      printf ("Error in mpfr_cmp_si(-3.0,-4)\n");
+      exit (1);
+    }
+  if (mpfr_cmp_si (x, s = 1) >= 0)
+    {
+      printf ("Error in mpfr_cmp_si(-3.0,1)\n");
+      exit (1);
+    }
+
+  mpfr_set_inf (x, 1);
+  if (mpfr_cmp_si (x, -1) <= 0)
+    {
+      printf ("Error in mpfr_cmp_si (Inf, 0)\n");
+      exit (1);
+    }
+  mpfr_set_inf (x, -1);
+  if (mpfr_cmp_si (x, -1) >= 0)
+    {
+      printf ("Error in mpfr_cmp_si (-Inf, 0)\n");
+      exit (1);
+    }
+
+  /* case b=0 */
+  mpfr_set_ui (x, 0, GMP_RNDZ);
+  MPFR_ASSERTN(mpfr_cmp_si (x, 0) == 0);
+  MPFR_ASSERTN(mpfr_cmp_si (x, 1) < 0);
+  MPFR_ASSERTN(mpfr_cmp_si (x, -1) > 0);
+
+  /* case i=0 */
+  mpfr_set_ui (x, 1, GMP_RNDZ);
+  MPFR_ASSERTN(mpfr_cmp_si (x, 0) > 0);
+  mpfr_set_ui (x, 0, GMP_RNDZ);
+  MPFR_ASSERTN(mpfr_cmp_si (x, 0) == 0);
+  mpfr_neg (x, x, GMP_RNDZ);
+  MPFR_ASSERTN(mpfr_cmp_si (x, 0) == 0);
+  mpfr_set_si (x, -1, GMP_RNDZ);
+  MPFR_ASSERTN(mpfr_cmp_si (x, 0) < 0);
+
+  /* case large x */
+  mpfr_set_str_binary (x, "1E100");
+  MPFR_ASSERTN(mpfr_cmp_si (x, 0) > 0);
+  MPFR_ASSERTN(mpfr_cmp_si (x, 1) > 0);
+  MPFR_ASSERTN(mpfr_cmp_si (x, -1) > 0);
+  mpfr_set_str_binary (x, "-1E100");
+  MPFR_ASSERTN(mpfr_cmp_si (x, 0) < 0);
+  MPFR_ASSERTN(mpfr_cmp_si (x, 1) < 0);
+  MPFR_ASSERTN(mpfr_cmp_si (x, -1) < 0);
+
+  /* corner case */
+  mpfr_set_ui (x, 1, GMP_RNDZ);
+  mpfr_mul_2exp (x, x, BITS_PER_MP_LIMB - 1, GMP_RNDZ);
+  /* now EXP(x)=BITS_PER_MP_LIMB */
+  MPFR_ASSERTN(mpfr_cmp_si (x, 1) > 0);
+
+  mpfr_clear (x);
+
+  check_nan ();
+
+  tests_end_mpfr ();
+  return 0;
+}
+
+#endif