#define DLL_EXPORT __declspec(dllexport) __cdecl

// gcc -shared -o simple-native.dll simple.c

static char do0(int type)
{
	return 'a';
}
static const char * const buf1 = "lalali";
static const char * const do1(int type)
{
	return buf1;
}
static float do2(int type, float f1, float f2)
{
	return f1 * f2;
}
static double do3(int type, double d1, double d2)
{
	return d1 * d2;
}
struct Foo
{
	int f1;
	short f2;
	double f3;
};
static double do4(int type, struct Foo foo)
{
	return foo.f1 * foo.f2 * foo.f3;
}
static struct Foo do5(int type, struct Foo foo1, struct Foo foo2)
{
	foo1.f1 *= foo2.f1;
	foo1.f2 *= foo2.f2;
	foo1.f3 *= foo2.f3;
	return foo1;
}
static const char * const do6(int type, struct Foo foo1)
{
	return buf1;
}


DLL_EXPORT void forward(int type)
{
	void (*fct)();
	
	switch(type)
	{
		case 0:
			fct = (void (*)()) &do0;
			break;
		case 1:
			fct = (void (*)()) &do1;
			break;
		case 2:
			fct = (void (*)()) &do2;
			break;
		case 3:
			fct = (void (*)()) &do3;
			break;
		case 4:
			fct = (void (*)()) &do4;
			break;
		case 5:
			fct = (void (*)()) &do5;
			break;
		case 6:
			fct = (void (*)()) &do6;
			break;
	}
	
	void* args = __builtin_apply_args();
	__builtin_return( __builtin_apply(
		fct, 
		args, 
		10 * sizeof(int) 
	));
}