Re: func return question

I am relatively inexperienced in C++ but trying to learn. I ran
across this
in my studies. My question is not about the declspec since I
understand that
it keeps the prolog and epilog out of the declared function.
   My question rather is exactly what is going on with throw( ) .
I.e. is throw
returning the previous function ?
------------------------------------------------
inline __declspec(naked) unsigned __fastcall Xadd(volatile unsigned*
t, int x) throw()
{
    __asm mov eax, edx
    __asm lock xadd dword ptr [ecx], eax
    __asm ret

}