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diff --git a/mpfr/tests/tcheck.c b/mpfr/tests/tcheck.c
new file mode 100644
index 00000000..58948a41
--- /dev/null
+++ b/mpfr/tests/tcheck.c
@@ -0,0 +1,115 @@
+/* Test file for mpfr_check.
+
+Copyright 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 <stdlib.h>
+#include <stdio.h>
+
+#include "mpfr-test.h"
+
+#define ERROR(s) printf("mpfr_check failed " s " Prec=%lu\n", pr), exit(1)
+
+int
+main (void)
+{
+  mpfr_t a;
+  mp_limb_t *p, tmp;
+  mp_size_t s;
+  mpfr_prec_t pr;
+  int max;
+
+  tests_start_mpfr ();
+  for(pr = MPFR_PREC_MIN ; pr < 500 ; pr++)
+    {
+      mpfr_init2 (a, pr);
+      if (!mpfr_check(a)) ERROR("for init");
+      /* Check special cases */
+      MPFR_SET_NAN(a);
+      if (!mpfr_check(a)) ERROR("for nan");
+      MPFR_SET_POS(a);
+      MPFR_SET_INF(a);
+      if (!mpfr_check(a)) ERROR("for inf");
+      MPFR_SET_ZERO(a);
+      if (!mpfr_check(a)) ERROR("for zero");
+      /* Check var */
+      mpfr_set_ui(a, 2, GMP_RNDN);
+      if (!mpfr_check(a)) ERROR("for set_ui");
+      mpfr_clear_overflow();
+      max = 1000; /* Allows max 2^1000 bits for the exponent */
+      while ((!mpfr_overflow_p()) && (max>0))
+        {
+          mpfr_mul(a, a, a, GMP_RNDN);
+          if (!mpfr_check(a)) ERROR("for mul");
+          max--;
+        }
+      if (max==0) ERROR("can't reach overflow");
+      mpfr_set_ui(a, 2137, GMP_RNDN);
+      /* Corrupt a and check for it */
+      MPFR_SIGN(a) = 2;
+      if (mpfr_check(a))  ERROR("sgn");
+      MPFR_SET_POS(a);
+      /* Check prec */
+      MPFR_PREC(a) = 1;
+      if (mpfr_check(a))  ERROR("precmin");
+      MPFR_PREC(a) = MPFR_PREC_MAX+1;
+      if (mpfr_check(a))  ERROR("precmax");
+      MPFR_PREC(a) = pr;
+      if (!mpfr_check(a)) ERROR("prec");
+      /* Check exponent */
+      MPFR_EXP(a) = MPFR_EXP_INVALID;
+      if (mpfr_check(a))  ERROR("exp invalid");
+      MPFR_EXP(a) = -MPFR_EXP_INVALID;
+      if (mpfr_check(a))  ERROR("-exp invalid");
+      MPFR_EXP(a) = 0;
+      if (!mpfr_check(a)) ERROR("exp 0");
+      /* Check Mantissa */
+      p = MPFR_MANT(a);
+      MPFR_MANT(a) = NULL;
+      if (mpfr_check(a))  ERROR("Mantissa Null Ptr");
+      MPFR_MANT(a) = p;
+      /* Check size */
+      s = MPFR_GET_ALLOC_SIZE(a);
+      MPFR_SET_ALLOC_SIZE(a, 0);
+      if (mpfr_check(a))  ERROR("0 size");
+      MPFR_SET_ALLOC_SIZE(a, MP_SIZE_T_MIN);
+      if (mpfr_check(a))  ERROR("min size");
+      MPFR_SET_ALLOC_SIZE(a, MPFR_LIMB_SIZE(a)-1 );
+      if (mpfr_check(a))  ERROR("size < prec");
+      MPFR_SET_ALLOC_SIZE(a, s);
+      /* Check normal form */
+      tmp = MPFR_MANT(a)[0];
+      if ((pr % BITS_PER_MP_LIMB) != 0)
+        {
+          MPFR_MANT(a)[0] = ~0;
+          if (mpfr_check(a))  ERROR("last bits non 0");
+        }
+      MPFR_MANT(a)[0] = tmp;
+      MPFR_MANT(a)[MPFR_LIMB_SIZE(a)-1] &= MPFR_LIMB_MASK (BITS_PER_MP_LIMB-1);
+      if (mpfr_check(a))  ERROR("last bits non 0");
+      /* Final */
+      mpfr_set_ui(a, 2137, GMP_RNDN);
+      if (!mpfr_check(a)) ERROR("after last set");
+      mpfr_clear (a);
+      if (mpfr_check(a))  ERROR("after clear");
+    }
+  tests_end_mpfr ();
+  return 0;
+}