// Candidate funciton for bs class
bool BitKey::isSubset(const BitKey & that) const
{
bool result = true;
const uint32_t * mydata = cDataPtr();
const uint32_t * yodata = that.cDataPtr();
uint32_t mysize = getWordSize(iv_Capacity);
uint32_t yosize = getWordSize(that.iv_Capacity);
uint32_t smsize = (yosize < mysize)? yosize : mysize;
// size can be non-zero with no bits on - so if that has no bits than use
// operator==
BitKey zero;
// only true if both are empty - eg not bits on"
if(that == zero) result = operator==(that);
// if yosize <= mysize than just match smallest amount of data
// if yozize > mysize than extra yodata must be zero
for(uint32_t i = 0; (i < smsize) && (result == true); ++i,++mydata,++yodata)
{
result = (*mydata & *yodata) == *yodata;
}
if(result && (yosize > mysize))
{
for(yosize -= mysize; yosize != 0 && result; --yosize, ++yodata)
{
result = *yodata == 0x00000000;
}
}
return result;
}
bool BitKey::operator==(const BitKey & that) const
{
bool result = true;
const uint32_t * mydata = cDataPtr();
const uint32_t * yodata = that.cDataPtr();
uint32_t mysize = getWordSize(iv_Capacity);
uint32_t yosize = getWordSize(that.iv_Capacity);
uint32_t smsize = (yosize < mysize)? yosize : mysize;
// If size is different than the extra must be zero
for(uint32_t i = 0; (i < smsize) && (result == true); ++i,++mydata,++yodata)
{
result = (*mydata == *yodata);
}
if(result && (yosize > mysize))
{
for(yosize -= mysize; yosize != 0 && result; --yosize, ++yodata)
{
result = *yodata == 0x00000000;
}
}
else if (result && (mysize > yosize))
{
for(mysize -= yosize; mysize != 0 && result; --mysize, ++mydata)
{
result = *mydata == 0x00000000;
}
}
return result;
}
void BitKey::removeBits(const BitKey & i_bk)
{
BitString mybs(iv_Capacity,(CPU_WORD *)DataPtr());
const BitString yobs(i_bk.iv_Capacity,(CPU_WORD *)i_bk.cDataPtr());
mybs.Mask(yobs);
}
