exp/packed_test.cc

   1 /*
   2   Copyright 2008 Kristian Nielsen
   3
   4   This file is part of BeeDB.
   5
   6   Foobar is free software: you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published by
   8   the Free Software Foundation, either version 2 of the License, or
   9   (at your option) any later version.
  10
  11   Foobar is distributed in the hope that it will be useful,
  12   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14   GNU General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with Foobar.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include <stdint.h>
  21 #include <stdio.h>
  22
  23 #include "packed_mask.h"
  24
  25 uint64_t read1(uint64_t *base, uint count)
  26 {
  27   uint64_t r= 0;
  28   pack_ptr_mask p(base);
  29
  30   while (count--)
  31     r+= p.unpack1();
  32
  33   return r;
  34 }
  35
  36 uint64_t read2(uint64_t *base, uint count)
  37 {
  38   uint64_t r= 0;
  39   pack_ptr_mask p(base);
  40
  41   while (count--)
  42     r+= p.unpack2();
  43
  44   return r;
  45 }
  46
  47 int main(int argc, char *argv[])
  48 {
  49   uint64_t word= 0xfedcba9876543210UL;
  50   pack_ptr_mask p(&word);
  51   printf("%lx\n", (unsigned long)p.getbits(3));
  52   printf("%lx\n", (unsigned long)p.getbits(7));
  53   return 0;
  54 }