Can this macro be converted to a function?

#define STRUCTSIZE(s) (sizeof(s) / sizeof(*s))

template<typename T,int SIZE>
inline size_t array_size(const T (&array)[SIZE])
{
    return SIZE;
}

constexpr size_t array_size(const T (&array)[SIZE])

#include <boost/typeof/typeof.hpp>

template<typename T>
struct ArraySize
{
    private:    static T x;
    public:     enum { size = sizeof(T)/sizeof(*x)};
};
template<typename T>
struct ArraySize<T*> {};

ArraySize<BOOST_TYPEOF(foo)>::size

// asize.hpp
template < typename T >
struct asize; // no implementation for all types...

template < typename T, size_t N >
struct asize< T[N] > { // ...except arrays
    static const size_t val = N;
};

template< size_t N  >
struct count_type { char val[N]; };

template< typename T, size_t N >
count_type< N > count( const T (&)[N] ) {}

#define ASIZE( a ) ( sizeof( count( a ).val ) )
#define ASIZET( A ) ( asize< A >::val )

// asize_test.cpp
#include <boost/static_assert.hpp>
#include "asize.hpp"

#define OLD_ASIZE( a ) ( sizeof( a ) / sizeof( *a ) )

typedef char C;
typedef struct { int i; double d; } S;
typedef C A[42];
typedef S B[42];
typedef C * PA;
typedef S * PB;

int main() {
    A a; B b; PA pa; PB pb;
    BOOST_STATIC_ASSERT( ASIZET( A ) == 42 );
    BOOST_STATIC_ASSERT( ASIZET( B ) == 42 );
    BOOST_STATIC_ASSERT( ASIZET( A ) == OLD_ASIZE( a ) );
    BOOST_STATIC_ASSERT( ASIZET( B ) == OLD_ASIZE( b ) );
    BOOST_STATIC_ASSERT( ASIZE( a ) == OLD_ASIZE( a ) );
    BOOST_STATIC_ASSERT( ASIZE( b ) == OLD_ASIZE( b ) );
    BOOST_STATIC_ASSERT( OLD_ASIZE( pa ) != 42 ); // logic error: pointer accepted
    BOOST_STATIC_ASSERT( OLD_ASIZE( pb ) != 42 ); // logic error: pointer accepted
 // BOOST_STATIC_ASSERT( ASIZE( pa ) != 42 ); // compile error: pointer rejected
 // BOOST_STATIC_ASSERT( ASIZE( pb ) != 42 ); // compile error: pointer rejected
    return 0;
}

template<int n>
struct char_array_wrapper{
    char result[n];
};

template<typename T, int s>
char_array_wrapper<s> the_type_of_the_variable_is_not_an_array(const T (&array)[s]){
}


#define ARRAYSIZE_OF_VAR(v) sizeof(the_type_of_the_variable_is_not_an_array(v).result)

#include <iostream>
using namespace std;

int main(){
    int foo[42];
    int*bar;
    cout<<ARRAYSIZE_OF_VAR(foo)<<endl;
    // cout<<ARRAYSIZE_OF_VAR(bar)<<endl;  fails
}

template< typename T > size_t structsize( const T& t ) {
  return sizeof( t ) / sizeof( *t );
}


int ints[] = { 1,2,3 };
assert( structsize( ints ) == 3 );

//
// Return the number of elements in a statically sized array.
//   DWORD Buffer[100];
//   RTL_NUMBER_OF(Buffer) == 100
// This is also popularly known as: NUMBER_OF, ARRSIZE, _countof, NELEM, etc.
//
#define RTL_NUMBER_OF_V1(A) (sizeof(A)/sizeof((A)[0]))

#if defined(__cplusplus) &&
    !defined(MIDL_PASS) &&
    !defined(RC_INVOKED) &&
    !defined(_PREFAST_) &&
    (_MSC_FULL_VER >= 13009466) &&
    !defined(SORTPP_PASS)
//
// RtlpNumberOf is a function that takes a reference to an array of N Ts.
//
// typedef T array_of_T[N];
// typedef array_of_T &reference_to_array_of_T;
//
// RtlpNumberOf returns a pointer to an array of N chars.
// We could return a reference instead of a pointer but older compilers do not accept that.
//
// typedef char array_of_char[N];
// typedef array_of_char *pointer_to_array_of_char;
//
// sizeof(array_of_char) == N
// sizeof(*pointer_to_array_of_char) == N
//
// pointer_to_array_of_char RtlpNumberOf(reference_to_array_of_T);
//
// We never even call RtlpNumberOf, we just take the size of dereferencing its return type.
// We do not even implement RtlpNumberOf, we just decare it.
//
// Attempts to pass pointers instead of arrays to this macro result in compile time errors.
// That is the point.
//
extern "C++" // templates cannot be declared to have 'C' linkage
template <typename T, size_t N>
char (*RtlpNumberOf( UNALIGNED T (&)[N] ))[N];

#define RTL_NUMBER_OF_V2(A) (sizeof(*RtlpNumberOf(A)))

//
// This does not work with:
//
// void Foo()
// {
//    struct { int x; } y[2];
//    RTL_NUMBER_OF_V2(y); // illegal use of anonymous local type in template instantiation
// }
//
// You must instead do:
//
// struct Foo1 { int x; };
//
// void Foo()
// {
//    Foo1 y[2];
//    RTL_NUMBER_OF_V2(y); // ok
// }
//
// OR
//
// void Foo()
// {
//    struct { int x; } y[2];
//    RTL_NUMBER_OF_V1(y); // ok
// }
//
// OR
//
// void Foo()
// {
//    struct { int x; } y[2];
//    _ARRAYSIZE(y); // ok
// }
//

#else
#define RTL_NUMBER_OF_V2(A) RTL_NUMBER_OF_V1(A)
#endif

#ifdef ENABLE_RTL_NUMBER_OF_V2
#define RTL_NUMBER_OF(A) RTL_NUMBER_OF_V2(A)
#else
#define RTL_NUMBER_OF(A) RTL_NUMBER_OF_V1(A)
#endif

//
// ARRAYSIZE is more readable version of RTL_NUMBER_OF_V2, and uses
// it regardless of ENABLE_RTL_NUMBER_OF_V2
//
// _ARRAYSIZE is a version useful for anonymous types
//
#define ARRAYSIZE(A)    RTL_NUMBER_OF_V2(A)
#define _ARRAYSIZE(A)   RTL_NUMBER_OF_V1(A)

template<typename T, int SIZE>
int arraySize(const T(&arr)[SIZE])
{
    return SIZE;
}

template <typename T>
uint32_t StructSize()  // This might get inlined to a constant at compile time
{
   return sizeof(T)/sizeof(*T);
}

// or to get it at compile time for shure

class StructSize<typename T>
{
   enum { result = sizeof(T)/sizeof(*T) };
}

#include <iterator>
#include <algorithm>
#include <iostream>


template<typename T>
struct StructSize
{
    private:    static T x;
    public:      enum { size = sizeof(T)/sizeof(*x)};
};

template<typename T>
struct StructSize<T*>
{
    /* Can only guarantee 1 item (maybe we should even disallow this situation) */
    //public:     enum { size = 1};
};

struct X
{
    int operator *();
};


int main(int argc,char* argv[])
{
    int data[]                                  = {1,2,3,4,5,6,7,8};
    int copy[ StructSize<typeof(data)>::size];

    std::copy(&data[0],&data[StructSize<typeof(data)>::size],&copy[0]);
    std::copy(&copy[0],&copy[StructSize<typeof(copy)>::size],std::ostream_iterator<int>(std::cout,","));

    /*
     * For extra points we should make the following cause the compiler to generate an error message */
    X   bad1;
    X   bad2[StructSize<typeof(bad1)>::size];
}

template <typename T>
size_t getTypeSize()
{
   return sizeof(T)/sizeof(*T);
}

struct JibbaJabba
{
   int int1;
   float f;
};

int main()
{
    cout << "sizeof JibbaJabba is " << getTypeSize<JibbaJabba>() << std::endl;
    return 0;
}