1 | // RUN: %libomp-compile-and-run |
2 | |
3 | // UNSUPPORTED: gcc-4, gcc-5, gcc-6, gcc-7, gcc-8 |
4 | |
5 | #include <stdio.h> |
6 | #include <stdlib.h> |
7 | |
8 | int a = 0, b = 1; |
9 | |
10 | int main(int argc, char **argv) { |
11 | |
12 | #pragma omp parallel |
13 | #pragma omp single |
14 | { |
15 | #pragma omp taskgroup task_reduction(+: a) task_reduction(*: b) |
16 | { |
17 | int i; |
18 | for (i = 1; i <= 5; ++i) { |
19 | #pragma omp task in_reduction(+: a) in_reduction(*: b) |
20 | { |
21 | a += i; |
22 | b *= i; |
23 | #pragma omp task in_reduction(+: a) |
24 | { |
25 | a += i; |
26 | } |
27 | } |
28 | } |
29 | } |
30 | } |
31 | |
32 | if (a != 30) { |
33 | fprintf(stderr, format: "error: a != 30. Instead a = %d\n" , a); |
34 | exit(EXIT_FAILURE); |
35 | } |
36 | if (b != 120) { |
37 | fprintf(stderr, format: "error: b != 120. Instead b = %d\n" , b); |
38 | exit(EXIT_FAILURE); |
39 | } |
40 | |
41 | return EXIT_SUCCESS; |
42 | } |
43 | |