mdw@git.distorted.org.uk Git - disorder/blob - lib/t-heap.c

   1 /*
   2  * This file is part of DisOrder.
   3  * Copyright (C) 2005, 2007, 2008 Richard Kettlewell
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  18  * USA
  19  */
  20 #include "test.h"
  21
  22 /** @brief Less-than comparison function for integer heap */
  23 static inline int int_lt(int a, int b) { return a < b; }
  24
  25 /** @struct iheap
  26  * @brief A heap with @c int elements */
  27 HEAP_TYPE(iheap, int, int_lt);
  28 HEAP_DEFINE(iheap, int, int_lt);
  29
  30 /** @brief Tests for @ref heap.h */
  31 void test_heap(void) {
  32   struct iheap h[1];
  33   int n;
  34   int last = -1;
  35
  36   fprintf(stderr, "test_heap\n");
  37
  38   iheap_init(h);
  39   for(n = 0; n < 1000; ++n)
  40     iheap_insert(h, random() % 100);
  41   for(n = 0; n < 1000; ++n) {
  42     const int latest = iheap_remove(h);
  43     if(last > latest)
  44       fprintf(stderr, "should have %d <= %d\n", last, latest);
  45     insist(last <= latest);
  46     last = latest;
  47   }
  48   putchar('\n');
  49 }
  50
  51 /*
  52 Local Variables:
  53 c-basic-offset:2
  54 comment-column:40
  55 fill-column:79
  56 indent-tabs-mode:nil
  57 End:
  58 */