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