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A.7 Using the reduction Clause

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The following example demonstrates the reduction clause (Section 2.7.2.6 on page 28):

#pragma omp parallel for private(i) shared(x, y, n) \
                         reduction(+: a, b)
    for (i=0; i<n; i++) {
        a = a + x[i];
        b = b + y[i];
    }