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diff --git a/mpfr/tests/tcmpabs.c b/mpfr/tests/tcmpabs.c
new file mode 100644
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--- /dev/null
+++ b/mpfr/tests/tcmpabs.c
@@ -0,0 +1,149 @@
+/* Test file for mpfr_cmpabs.
+
+Copyright 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. */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "mpfr-test.h"
+
+#define ERROR(s) do { printf(s); exit(1); } while (0)
+
+int
+main (void)
+{
+  mpfr_t xx, yy;
+  int c;
+
+  tests_start_mpfr ();
+
+  mpfr_init2 (xx, 2);
+  mpfr_init2 (yy, 2);
+
+  mpfr_clear_erangeflag ();
+  MPFR_SET_NAN (xx);
+  MPFR_SET_NAN (yy);
+  if (mpfr_cmpabs (xx, yy) != 0)
+    ERROR ("mpfr_cmpabs (NAN,NAN) returns non-zero\n");
+  if (!mpfr_erangeflag_p ())
+    ERROR ("mpfr_cmpabs (NAN,NAN) doesn't set erange flag\n");
+
+  mpfr_set_str_binary (xx, "0.10E0");
+  mpfr_set_str_binary (yy, "-0.10E0");
+  if (mpfr_cmpabs (xx, yy) != 0)
+    ERROR ("mpfr_cmpabs (xx, yy) returns non-zero for prec=2\n");
+
+  mpfr_set_prec (xx, 65);
+  mpfr_set_prec (yy, 65);
+  mpfr_set_str_binary (xx, "-0.10011010101000110101010000000011001001001110001011101011111011101E623");
+  mpfr_set_str_binary (yy, "0.10011010101000110101010000000011001001001110001011101011111011100E623");
+  if (mpfr_cmpabs (xx, yy) <= 0)
+    ERROR ("Error (1) in mpfr_cmpabs\n");
+
+  mpfr_set_str_binary (xx, "-0.10100010001110110111000010001000010011111101000100011101000011100");
+  mpfr_set_str_binary (yy, "-0.10100010001110110111000010001000010011111101000100011101000011011");
+  if (mpfr_cmpabs (xx, yy) <= 0)
+    ERROR ("Error (2) in mpfr_cmpabs\n");
+
+  mpfr_set_prec (xx, 160);
+  mpfr_set_prec (yy, 160);
+  mpfr_set_str_binary (xx, "0.1E1");
+  mpfr_set_str_binary (yy, "-0.1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111100000110001110100");
+  if (mpfr_cmpabs (xx, yy) <= 0)
+    ERROR ("Error (3) in mpfr_cmpabs\n");
+
+  mpfr_set_prec(xx, 53);
+  mpfr_set_prec(yy, 200);
+  mpfr_set_ui (xx, 1, (mp_rnd_t) 0);
+  mpfr_set_ui (yy, 1, (mp_rnd_t) 0);
+  if (mpfr_cmpabs(xx, yy) != 0)
+    ERROR ("Error in mpfr_cmpabs: 1.0 != 1.0\n");
+
+  mpfr_set_prec (yy, 31);
+  mpfr_set_str (xx, "-1.0000000002", 10, (mp_rnd_t) 0);
+  mpfr_set_ui (yy, 1, (mp_rnd_t) 0);
+  if (!(mpfr_cmpabs(xx,yy)>0))
+    ERROR ("Error in mpfr_cmpabs: not 1.0000000002 > 1.0\n");
+  mpfr_set_prec(yy, 53);
+
+  mpfr_set_ui(xx, 0, GMP_RNDN);
+  mpfr_set_str (yy, "-0.1", 10, GMP_RNDN);
+  if (mpfr_cmpabs(xx, yy) >= 0)
+    ERROR ("Error in mpfr_cmpabs(0.0, 0.1)\n");
+
+  mpfr_set_inf (xx, -1);
+  mpfr_set_str (yy, "23489745.0329", 10, GMP_RNDN);
+  if (mpfr_cmpabs(xx, yy) <= 0)
+    ERROR ("Error in mpfr_cmp(-Inf, 23489745.0329)\n");
+
+  mpfr_set_inf (xx, 1);
+  mpfr_set_inf (yy, -1);
+  if (mpfr_cmpabs(xx, yy) != 0)
+    ERROR ("Error in mpfr_cmpabs(Inf, -Inf)\n");
+
+  mpfr_set_inf (yy, -1);
+  mpfr_set_str (xx, "2346.09234", 10, GMP_RNDN);
+  if (mpfr_cmpabs (xx, yy) >= 0)
+    ERROR ("Error in mpfr_cmpabs(-Inf, 2346.09234)\n");
+
+  mpfr_set_prec (xx, 2);
+  mpfr_set_prec (yy, 128);
+  mpfr_set_str_binary (xx, "0.1E10");
+  mpfr_set_str_binary (yy,
+                       "0.100000000000000000000000000000000000000000000000"
+                       "00000000000000000000000000000000000000000000001E10");
+  if (mpfr_cmpabs (xx, yy) >= 0)
+    ERROR ("Error in mpfr_cmpabs(10.235, 2346.09234)\n");
+  mpfr_swap (xx, yy);
+  if (mpfr_cmpabs(xx, yy) <= 0)
+    ERROR ("Error in mpfr_cmpabs(2346.09234, 10.235)\n");
+  mpfr_swap (xx, yy);
+
+  /* Check for NAN */
+  mpfr_set_nan (xx);
+  mpfr_clear_erangeflag ();
+  c = (mpfr_cmp) (xx, yy);
+  if (c != 0 || !mpfr_erangeflag_p () )
+    {
+      printf ("NAN error (1)\n");
+      exit (1);
+    }
+  mpfr_clear_erangeflag ();
+  c = (mpfr_cmp) (yy, xx);
+  if (c != 0 || !mpfr_erangeflag_p () )
+    {
+      printf ("NAN error (2)\n");
+      exit (1);
+    }
+  mpfr_clear_erangeflag ();
+  c = (mpfr_cmp) (xx, xx);
+  if (c != 0 || !mpfr_erangeflag_p () )
+    {
+      printf ("NAN error (3)\n");
+      exit (1);
+    }
+
+  mpfr_clear (xx);
+  mpfr_clear (yy);
+
+  tests_end_mpfr ();
+  return 0;
+}