1#include <omp.h>
2#include <stdlib.h>
3
4int
5main (void)
6{
7  int i = 0, j = 0, k = ~0;
8  double d = 1.0;
9#pragma omp parallel num_threads(4) reduction(+:i) reduction(*:d) reduction(&:k)
10  {
11    if (i != 0 || d != 1.0 || k != ~0)
12#pragma omp atomic
13      j |= 1;
14
15    if (omp_get_num_threads () != 4)
16#pragma omp atomic
17      j |= 2;
18
19    i = omp_get_thread_num ();
20    d = i + 1;
21    k = ~(1 << (2 * i));
22  }
23
24  if (j & 1)
25    abort ();
26  if ((j & 2) == 0)
27    {
28      if (i != (0 + 1 + 2 + 3))
29	abort ();
30      if (d != (1.0 * 2.0 * 3.0 * 4.0))
31	abort ();
32      if (k != (~0 ^ 0x55))
33	abort ();
34    }
35  return 0;
36}
37