Function BIT_initCStream

freebsd/contrib/openzfs/module/zstd/lib/zstd.c:1479–1489

-************************************************************** * bitStream encoding ****************************************************************/ ! BIT_initCStream() : * `dstCapacity` must be > sizeof(size_t) * @return : 0 if success, * otherwise an error code (can be tested using ERR_isError()) */

 *  @return : 0 if success,
 *            otherwise an error code (can be tested using ERR_isError()) */
MEM_STATIC size_t BIT_initCStream(BIT_CStream_t* bitC,
                                  void* startPtr, size_t dstCapacity)
{
    bitC->bitContainer = 0;
    bitC->bitPos = 0;
    bitC->startPtr = (char*)startPtr;
    bitC->ptr = bitC->startPtr;
    bitC->endPtr = bitC->startPtr + dstCapacity - sizeof(bitC->bitContainer);
    if (dstCapacity <= sizeof(bitC->bitContainer)) return ERROR(dstSize_tooSmall);
    return 0;
}

/*! BIT_addBits() :
 *  can add up to 31 bits into `bitC`.