Thread: Copying constant amount of data

And, you can't get typedefs that depend on architecture with the preprocessor. Instead use this;

Code:

template<int bit_size> struct Helper
{
};

template<> struct Helper<16>
{
    typedef   int16_t   intw;
    typedef  uint16_t  uintw;
};

template<> struct Helper<32>
{
    typedef   int32_t   intw;
    typedef  uint32_t  uintw;
};

template<> struct Helper<64>
{
    typedef   int64_t   intw;
    typedef  uint64_t  uintw;
};

typedef Helper<sizeof(void *)*CHAR_BIT>::intw intw;
typedef Helper<sizeof(void *)*CHAR_BIT>::uintw uintw;

This, of course, relies on the types intXX_t and uintXX_t types being declared on your target system - which is not guaranteed either, IIRC.