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51 lines
849 B
C
51 lines
849 B
C
#include <omp.h>
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#include <stdlib.h>
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int
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main (void)
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{
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int i = 0, j = 0, k = ~0, l;
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double d = 1.0;
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#pragma omp parallel num_threads(4)
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{
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#pragma omp single
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{
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i = 16;
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k ^= (1 << 16);
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d += 32.0;
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}
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#pragma omp for reduction(+:i) reduction(*:d) reduction(&:k)
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for (l = 0; l < 4; l++)
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{
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if (omp_get_num_threads () == 4 && (i != 0 || d != 1.0 || k != ~0))
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#pragma omp atomic
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j |= 1;
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if (l == omp_get_thread_num ())
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{
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i = omp_get_thread_num ();
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d = i + 1;
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k = ~(1 << (2 * i));
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}
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}
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if (omp_get_num_threads () == 4)
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{
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if (i != (16 + 0 + 1 + 2 + 3))
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#pragma omp atomic
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j |= 2;
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if (d != (33.0 * 1.0 * 2.0 * 3.0 * 4.0))
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#pragma omp atomic
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j |= 4;
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if (k != (~0 ^ 0x55 ^ (1 << 16)))
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#pragma omp atomic
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j |= 8;
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}
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}
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if (j)
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abort ();
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return 0;
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}
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