pData->aCRCtable [n] = c;
pData->aCRCtable [iN] = iC;
void make_crc_table (mng_datap pData){  mng_uint32 c;  mng_int32  n, k;  for (n = 0; n < 256; n++)  {    c = (mng_uint32) n;    for (k = 0; k < 8; k++)    {      if (c & 1)        c = 0xedb88320U ^ (c >> 1);      else        c = c >> 1;    }    pData->aCRCtable [n] = c;  }  pData->bCRCcomputed = MNG_TRUE;}