#define SILC_64_TO_PTR ...

    Type casts a 64-bit integer value into a pointer.  Use this to
    avoid compiler warnings when type casting integers to pointers of
    different size.

    #if SILC_SIZEOF_VOID_P < 8
    #define SILC_64_TO_PTR(_ival__)                                         \
      ((void *)((SilcUInt32)((SilcUInt64)(_ival__) & (SilcUInt32)0xFFFFFFFFUL)))
    #else
    #define SILC_64_TO_PTR(_ival__) ((void *)((SilcUInt64)(_ival__)))
    #endif