std_array.cpp

////C++ Headers
#include <array>
using namespace std;


#pragma region Benchmarking
////BenchMarking Header
#include "Benchmark.h"
static CPUBenchmark g_cb;
static MemoryBenchmark g_mb;

//#define PRINT_CPU(_STR_,_RESULT_,_VECT_SIZE_) printf_s( ""#_STR_"==>Tick: %llld, ==>Avrg Tick:  %llld\n", _RESULT_, _RESULT_ / _VECT_SIZE_);
#define _VECT_SIZE_ ARR_SIZE
#define PRINT_CPU(_FN_) {printf_s(""#_FN_"\n");\
                                g_cb.restart();\
                                _FN_();\
                                long long result=g_cb.stop();\
                                printf_s("==>Tick: %llld\n==>Avrg: %.5lf\n", \
                                result, double(result) / _VECT_SIZE_);}
#define MEM_INFO_PRINT(...) {g_mb.recalculateMem(); printf_s("==>VMem: %.2lfMb\n==>PMem: %.2lfMb\n",\
                                                double(g_mb.getVMUsedByMe()) / 1024.0, double(g_mb.getPhysUsedByMe()) / 1024.0);}
#pragma endregion

const long long ARR_SIZE = 100 * 1000;

void test_arr_without_init()
{
    array<int, ARR_SIZE> arr;
    bool result = true;
    long i;
    for (i = 0; i < ARR_SIZE; i++)
    {
        arr[i] = i;
    }

    for (i = 0; i < ARR_SIZE && result; i++)
    {
        result &= arr[i] == i;
    }

    MEM_INFO_PRINT();
}

//i.e. no [] access,
//According to Wiki [] is slower
void test_arr_with_array_at()
{
    array<int, ARR_SIZE> arr;
    bool result = true;
    long i;
    for (i = 0; i < ARR_SIZE; i++)
    {
        arr.at(i) = i;
    }

    for (i = 0; i < ARR_SIZE && result; i++)
    {
        result &= arr.at(i) == i;
    }

    MEM_INFO_PRINT();
}

void test_arr_with_init_array_at()
{
    array<int, ARR_SIZE> arr = {0};
    bool result = true;
    long i;
    for (i = 0; i < ARR_SIZE; i++)
    {
        arr.at(i) = i;
    }

    for (i = 0; i < ARR_SIZE && result; i++)
    {
        result &= arr.at(i) == i;
    }

    MEM_INFO_PRINT();
}



void test_c_arr_without_init()
{
    int arr[ARR_SIZE];
    bool result = true;
    long i;
    for (i = 0; i < ARR_SIZE; i++)
    {
        arr[i] = i;
    }

    for (i = 0; i < ARR_SIZE; i++)
    {
        result &= arr[i] == i;
    }

    MEM_INFO_PRINT();
}

void test_c_arr_with_init()
{
    int arr[ARR_SIZE] = {0};
    bool result = true;
    long i;
    for (i = 0; i < ARR_SIZE; i++)
    {
        arr[i] = i;
    }

    for (i = 0; i < ARR_SIZE; i++)
    {
        result &= arr[i] == i;
    }

    MEM_INFO_PRINT();
}

void TEST_std_array()
{

    long outVal = -1;
    PRINT_CPU(test_arr_without_init);

    PRINT_CPU(test_arr_with_init_array_at);

    PRINT_CPU(test_arr_with_array_at);

    PRINT_CPU(test_c_arr_without_init);

    PRINT_CPU(test_c_arr_with_init);
}