Merge branch 'master' of git.distorted.org.uk:~mdw/publish/public-git/disorder

[disorder] / libtests / t-bits.c

/*
 * This file is part of DisOrder.
 * Copyright (C) 2008 Richard Kettlewell
 *
 * 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 3 of the License, 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, see <http://www.gnu.org/licenses/>.
 */
#include "test.h"
#include "bits.h"

static void test_bits(void) {
  int n;
  
  check_integer(leftmost_bit(0), -1);
  check_integer(leftmost_bit(0x80000000), 31);
  check_integer(leftmost_bit(0xffffffff), 31);
  for(n = 0; n < 28; ++n) {
    const uint32_t b = 1 << n, limit = 2 * b;
    uint32_t v;

    for(v = b; v < limit; ++v)
      check_integer(leftmost_bit(v), n);
  }
}

TEST(bits);

/*
Local Variables:
c-basic-offset:2
comment-column:40
fill-column:79
indent-tabs-mode:nil
End:
*/