openmp Getting started with openmp Reduction Example
Example
#include <omp.h>
void main ()
{
int i;
double ZZ, func(), res=0.0;
#pragma omp parallel for reduction(+:res) private(ZZ)
for (i=0; i< 1000; i++){
ZZ = func(I);
res = res + ZZ;
}
}
In the last line: Actually added to a private copy, then combined after the loop. Compiler takes care of the details.
