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// RUN: %libomp-compile-and-run
#include <stdio.h>
#include <omp.h>
int test_omp_parallel_num_threads() {
int num_failed;
int threads;
int nthreads;
int max_threads = 0;
num_failed = 0;
#pragma omp task
{}
/* first we check how many threads are available */
#pragma omp parallel
{
#pragma omp task
{}
#pragma omp master
max_threads = omp_get_num_threads();
}
/* we increase the number of threads from one to maximum:*/
for (threads = 1; threads <= max_threads; threads++) {
nthreads = 0;
#pragma omp parallel reduction(+ : num_failed) num_threads(threads)
{
#pragma omp task
{}
num_failed = num_failed + !(threads == omp_get_num_threads());
#pragma omp atomic
nthreads += 1;
}
num_failed = num_failed + !(nthreads == threads);
}
return (!num_failed);
}
int main() {
int i;
int num_failed = 0;
for (i = 0; i < 100; i++) {
if (!test_omp_parallel_num_threads()) {
num_failed++;
}
}
return num_failed;
}
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