What is significance of "\" ?Code:/* =========================================================================== * Initialize the hash table (avoiding 64K overflow for 16 bit systems). * prev[] will be initialized on the fly. */ #define CLEAR_HASH(s) \ s->head[s->hash_size-1] = NIL; \ zmemzero((Bytef *)s->head, (unsigned)(s->hash_size-1)*sizeof(*s->head)); /* ========================================================================= */
And if possible could you explain the code ?
It means "continue this line on the next line", which prevents the line from being "infinitely long".
I personally do not like multiline macros like that. It is much better to write a small function - modern compilers will be able to inline the function if it's defined in a header file, and it will be possible to debug the line, rather than having a "step over all of it" nightmare.
--
Mats
Compilers can produce warnings - make the compiler programmers happy: Use them!
Please don't PM me for help - and no, I don't do help over instant messengers.
I would agree, but sometimes it's the only effective solution in C. It isn't know for its generics, after all.Originally Posted by matsp
It would be faster than typing out a number of different functions to work with different types.
Then again, macros aren't type strict either. Isn't the opportunity cost for something like that too great? You'd have to do generic programming an entirely different way or even use another language.
