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diff --git a/mpfr/tests/tcmp_d.c b/mpfr/tests/tcmp_d.c
new file mode 100644
index 00000000..1fc00c54
--- /dev/null
+++ b/mpfr/tests/tcmp_d.c
@@ -0,0 +1,102 @@
+/* Test file for mpfr_cmp_d.
+
+Copyright 1999, 2001, 2002, 2003, 2004, 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. */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "mpfr-test.h"
+
+int
+main (void)
+{
+  mpfr_t x;
+  int c;
+
+  tests_start_mpfr ();
+
+  mpfr_init2(x, IEEE_DBL_MANT_DIG);
+
+  mpfr_set_d (x, 2.34763465, GMP_RNDN);
+  if (mpfr_cmp_d(x, 2.34763465)!=0) {
+    printf("Error in mpfr_cmp_d 2.34763465 and ");
+    mpfr_out_str(stdout, 10, 0, x, GMP_RNDN); putchar('\n');
+    exit(1);
+  }
+  if (mpfr_cmp_d(x, 2.345)<=0) {
+    printf("Error in mpfr_cmp_d 2.345 and ");
+    mpfr_out_str(stdout, 10, 0, x, GMP_RNDN); putchar('\n');
+    exit(1);
+  }
+  if (mpfr_cmp_d(x, 2.4)>=0) {
+    printf("Error in mpfr_cmp_d 2.4 and ");
+    mpfr_out_str(stdout, 10, 0, x, GMP_RNDN); putchar('\n');
+    exit(1);
+  }
+
+  mpfr_set_ui (x, 0, GMP_RNDZ);
+  mpfr_neg (x, x, GMP_RNDZ);
+  if (mpfr_cmp_d (x, 0.0)) {
+    printf("Error in mpfr_cmp_d 0.0 and ");
+    mpfr_out_str(stdout, 10, 0, x, GMP_RNDN); putchar('\n');
+    exit(1);
+  }
+
+  mpfr_set_ui (x, 0, GMP_RNDN);
+  mpfr_ui_div (x, 1, x, GMP_RNDU);
+  if (mpfr_cmp_d (x, 0.0) == 0)
+    {
+      printf ("Error in mpfr_cmp_d (Inf, 0)\n");
+      exit (1);
+    }
+
+  /* Check NAN */
+  mpfr_clear_erangeflag ();
+  c = mpfr_cmp_d (x, DBL_NAN);
+  if (c != 0 || !mpfr_erangeflag_p ())
+    {
+      printf ("ERROR for NAN (1)\n");
+#ifdef MPFR_NANISNAN
+      printf ("The reason is that NAN == NAN. Please look at the configure "
+              "output\nand Section \"In case of problem\" of the INSTALL "
+              "file.\n");
+#endif
+      exit (1);
+    }
+  mpfr_set_nan (x);
+  mpfr_clear_erangeflag ();
+  c = mpfr_cmp_d (x, 2.0);
+  if (c != 0 || !mpfr_erangeflag_p ())
+    {
+      printf ("ERROR for NAN (2)\n");
+#ifdef MPFR_NANISNAN
+      printf ("The reason is that NAN == NAN. Please look at the configure "
+              "output\nand Section \"In case of problem\" of the INSTALL "
+              "file.\n");
+#endif
+      exit (1);
+    }
+
+  mpfr_clear(x);
+
+  tests_end_mpfr ();
+  return 0;
+}