mirror of
https://git.savannah.gnu.org/git/gnulib.git
synced 2025-08-10 04:43:00 +03:00
e9cfd9f2d0
* MODULES.html.sh: Update name. * lib/popcount.h: Renamed lib/count-one-bits.h. (popcount): Renamed count_one_bits. (popcountl): Renamed count_one_bits_l. (popcountll): Renamed count_one_bits_ll. * m4/popcount.m4: Renamed m4/count-one-bits.m4. * modules/popcount: Renamed module/count-one-bits. * modules/popcount-tests: Renamed module/count-one-bits-tests. * tests/test-popcount.c: Renamed tests/test-count-one-bits.c.
83 lines
3.2 KiB
C
83 lines
3.2 KiB
C
/*
|
|
* Copyright (C) 2007 Free Software Foundation
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2, or (at your option)
|
|
* any later version.
|
|
*
|
|
* This program 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
* 02110-1301, USA. */
|
|
|
|
/* Written by Ben Pfaff. */
|
|
|
|
#include <config.h>
|
|
|
|
#include "count-one-bits.h"
|
|
|
|
#include <limits.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#define ASSERT(expr) \
|
|
do \
|
|
{ \
|
|
if (!(expr)) \
|
|
{ \
|
|
fprintf (stderr, "%s:%d: assertion \"%s\" failed\n", \
|
|
__FILE__, __LINE__, #expr); \
|
|
abort (); \
|
|
} \
|
|
} \
|
|
while (0)
|
|
|
|
#define UINT_BIT (sizeof (unsigned int) * CHAR_BIT)
|
|
#define ULONG_BIT (sizeof (unsigned long int) * CHAR_BIT)
|
|
#define ULLONG_BIT (sizeof (unsigned long long int) * CHAR_BIT)
|
|
|
|
#ifndef ULLONG_MAX
|
|
# define HALF (1ULL << (sizeof (unsigned long long int) * CHAR_BIT - 1))
|
|
# define ULLONG_MAX (HALF - 1 + HALF)
|
|
#endif
|
|
|
|
int
|
|
main (int argc, char *argv[])
|
|
{
|
|
int i, j;
|
|
|
|
#define TEST_COUNT_ONE_BITS(FUNC, TYPE, BITS, MAX, ONE) \
|
|
ASSERT (FUNC (0) == 0); \
|
|
for (i = 0; i < BITS; i++) \
|
|
{ \
|
|
ASSERT (FUNC (ONE << i) == 1); \
|
|
for (j = i + 1; j < BITS; j++) \
|
|
ASSERT (FUNC ((ONE << i) | (ONE << j)) == 2); \
|
|
} \
|
|
for (i = 0; i < 1000; i++) \
|
|
{ \
|
|
TYPE value = rand () ^ (rand () << 31 << 1); \
|
|
int count = 0; \
|
|
for (j = 0; j < BITS; j++) \
|
|
count += (value & (ONE << j)) != 0; \
|
|
ASSERT (count == FUNC (value)); \
|
|
} \
|
|
ASSERT (FUNC (MAX) == BITS);
|
|
|
|
TEST_COUNT_ONE_BITS (count_one_bits, unsigned int, UINT_BIT, UINT_MAX, 1U);
|
|
TEST_COUNT_ONE_BITS (count_one_bits_l, unsigned long int,
|
|
ULONG_BIT, ULONG_MAX, 1UL);
|
|
#ifdef HAVE_UNSIGNED_LONG_LONG_INT
|
|
TEST_COUNT_ONE_BITS (count_one_bits_ll,
|
|
unsigned long long int, ULLONG_BIT, ULLONG_MAX, 1ULL);
|
|
#endif
|
|
|
|
return 0;
|
|
}
|