mirror of
https://github.com/OpenMP/Examples.git
synced 2025-04-04 05:41:33 +01:00
35 lines
594 B
C++
35 lines
594 B
C++
/*
|
|
* @@name: priv_reduction.2
|
|
* @@type: C++
|
|
* @@operation: run
|
|
* @@expect: success
|
|
* @@version: omp_6.0
|
|
*/
|
|
#include <stdio.h>
|
|
#include <omp.h>
|
|
#define N 100
|
|
|
|
void do_red(int n, int *v, int &sum_v)
|
|
{
|
|
sum_v = 0; // sum_v is private
|
|
#pragma omp for reduction(original(private),+: sum_v)
|
|
for (int i = 0; i < n; i++) {
|
|
sum_v += v[i];
|
|
}
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
int v[N];
|
|
for (int i = 0; i < N; i++)
|
|
v[i] = i;
|
|
|
|
#pragma omp parallel
|
|
{
|
|
int s_v; // s_v is private
|
|
do_red(N, v, s_v);
|
|
printf("myid %d: sum of v = %d\n", omp_get_thread_num(), s_v);
|
|
}
|
|
return 0;
|
|
}
|