#define TEST_SIZE = 70000;

// Comparing test1 and test2.

// SINGLE-THREAD :
bool test1()
{
    double nonsense = 0;
    for (int i = 0; i < TEST_SIZE; ++i) {
        for (int j = 0; j < TEST_SIZE; ++j) {
            nonsense = sqrt(i + j);
        }
    }

    printf("ready");
    return true;
}

// MULI-THREAD :
void* first_half(void* ptr)
{
    double nonsense = 0;
    for (int i = 0; i < TEST_SIZE / 2 + 1; ++i) {
        for (int j = 0; j < TEST_SIZE / 2 + 1; ++j) {
            nonsense = sqrt(i + j);
        }
    }
}

void* second_half(void* ptr)
{
    double nonsense = 0;
    for (int i = TEST_SIZE / 2 + 1; i < TEST_SIZE; ++i) {
        for (int j = TEST_SIZE / 2 + 1; j < TEST_SIZE; ++j) {
            nonsense = sqrt(i + j);
        }
    }
}

bool test2()
{
    pthread_t t1, t2, t3, t4;
    int ret;

    ret = pthread_create(&t1, NULL, first_half, NULL);
    if (ret != 0)
        return false;
    ret = pthread_create(&t2, NULL, second_half, NULL);
    if (ret != 0)
        return false;

    // join shortest distance calculation :
    ret = pthread_join(t1, NULL);
    if (ret != 0)
        return false;

    // join shortest distance calculation :
    ret = pthread_join(t2, NULL);
    if (ret != 0)
        return false;

    printf("ready\n");
    return true;
}