1  /* Test LIMB_HIGHBIT_TO_MASK.
       2  
       3  Copyright 2004 Free Software Foundation, Inc.
       4  
       5  This file is part of the GNU MP Library test suite.
       6  
       7  The GNU MP Library test suite is free software; you can redistribute it
       8  and/or modify it under the terms of the GNU General Public License as
       9  published by the Free Software Foundation; either version 3 of the License,
      10  or (at your option) any later version.
      11  
      12  The GNU MP Library test suite is distributed in the hope that it will be
      13  useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
      14  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
      15  Public License for more details.
      16  
      17  You should have received a copy of the GNU General Public License along with
      18  the GNU MP Library test suite.  If not, see https://www.gnu.org/licenses/.  */
      19  
      20  #include <stdio.h>
      21  #include <stdlib.h>
      22  
      23  #include "gmp-impl.h"
      24  #include "tests.h"
      25  
      26  
      27  /* There's very little to these tests, but it's nice to have them since if
      28     something has gone wrong with the arithmetic right shift business in
      29     LIMB_HIGHBIT_TO_MASK then the only symptom is likely to be failures in
      30     udiv_qrnnd_preinv, which would not be easy to diagnose.  */
      31  
      32  int
      33  main (void)
      34  {
      35    ASSERT_ALWAYS (LIMB_HIGHBIT_TO_MASK (0) == 0);
      36    ASSERT_ALWAYS (LIMB_HIGHBIT_TO_MASK (GMP_LIMB_HIGHBIT) == MP_LIMB_T_MAX);
      37    ASSERT_ALWAYS (LIMB_HIGHBIT_TO_MASK (MP_LIMB_T_MAX) == MP_LIMB_T_MAX);
      38    ASSERT_ALWAYS (LIMB_HIGHBIT_TO_MASK (GMP_LIMB_HIGHBIT >> 1) == 0);
      39    ASSERT_ALWAYS (LIMB_HIGHBIT_TO_MASK (MP_LIMB_T_MAX >> 1) == 0);
      40  
      41    exit (0);
      42  }