+
−/*
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− * Copyright (C) 2007-2008 Free Software Foundation
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− *
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− * This program is free software: you can redistribute it and/or modify
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− * it under the terms of the GNU General Public License as published by
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− * the Free Software Foundation; either version 3 of the License, or
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− * (at your option) any later version.
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− *
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− * This program is distributed in the hope that it will be useful,
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− * but WITHOUT ANY WARRANTY; without even the implied warranty of
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− * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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− * GNU General Public License for more details.
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− *
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− * You should have received a copy of the GNU General Public License
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− * along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
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−
+
−/* Written by Ben Pfaff.  */
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−
+
−#include <config.h>
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−
+
−#include "count-one-bits.h"
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−
+
−#include <limits.h>
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−#include <stdio.h>
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−#include <stdlib.h>
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−
+
−#define ASSERT(expr)                                            \
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−  do                                                            \
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−    {                                                           \
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−      if (!(expr))                                              \
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−        {                                                       \
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−          fprintf (stderr, "%s:%d: assertion \"%s\" failed\n",  \
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−                   __FILE__, __LINE__, #expr);                  \
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−          fflush (stderr);                                      \
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−          abort ();                                             \
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−        }                                                       \
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−    }                                                           \
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−  while (0)
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−
+
−#define UINT_BIT (sizeof (unsigned int) * CHAR_BIT)
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−#define ULONG_BIT (sizeof (unsigned long int) * CHAR_BIT)
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−#define ULLONG_BIT (sizeof (unsigned long long int) * CHAR_BIT)
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−
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−#ifndef ULLONG_MAX
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−# define HALF (1ULL << (sizeof (unsigned long long int) * CHAR_BIT - 1))
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−# define ULLONG_MAX (HALF - 1 + HALF)
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−#endif
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−
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−int
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−main (int argc, char *argv[])
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−{
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−  int i, j;
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−
+
−#define TEST_COUNT_ONE_BITS(FUNC, TYPE, BITS, MAX, ONE) \
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−  ASSERT (FUNC (0) == 0);                               \
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−  for (i = 0; i < BITS; i++)                            \
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−    {                                                   \
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−      ASSERT (FUNC (ONE << i) == 1);                    \
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−      for (j = i + 1; j < BITS; j++)                    \
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−        ASSERT (FUNC ((ONE << i) | (ONE << j)) == 2);   \
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−    }                                                   \
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−  for (i = 0; i < 1000; i++)                            \
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−    {                                                   \
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−      TYPE value = rand () ^ (rand () << 31 << 1);      \
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−      int count = 0;                                    \
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−      for (j = 0; j < BITS; j++)                        \
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−        count += (value & (ONE << j)) != 0;             \
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−      ASSERT (count == FUNC (value));                   \
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−    }                                                   \
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−  ASSERT (FUNC (MAX) == BITS);
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−
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−  TEST_COUNT_ONE_BITS (count_one_bits, unsigned int, UINT_BIT, UINT_MAX, 1U);
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−  TEST_COUNT_ONE_BITS (count_one_bits_l, unsigned long int,
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−                       ULONG_BIT, ULONG_MAX, 1UL);
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−#ifdef HAVE_UNSIGNED_LONG_LONG_INT
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−  TEST_COUNT_ONE_BITS (count_one_bits_ll,
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−                       unsigned long long int, ULLONG_BIT, ULLONG_MAX, 1ULL);
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−#endif
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−
+
−  return 0;
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−}