thrash_openmp.cpp

double thrash_openmp(int ** matrix, long int size){

    double total_begin = omp_get_wtime();

    #pragma omp parallel for
    for(int x = 0; x < size; x++){
        for(int y = 0; y < size; y++){
            matrix[y][x] = matrix[y][x] * 2;
        }
    }
    double total_end = omp_get_wtime();
    return double(total_end - total_begin);
}