std::string DiscreteTerm::toString() const {
std::stringstream ss;
ss << LinguisticTerm::toString();
ss << "Discrete (";
for (int i = 0; i < numberOfCoords(); ++i) {
ss << "{" << _x[i] << "," << _y[i] << "}";
if (i < numberOfCoords() - 1) {
ss << " ";
}
}
ss << ")";
return ss.str();
}
void Initial::setCoordString()
{
int ylen = numberOfCoords();
string *coordList = new string[ylen];
int i = startPoint();
int j = 0;
string str = "";
/*List of strings. Each string is a coordinate
*pair.*/
while(j<ylen)
{
while(i<buffer.length() && buffer[i]!=')')
str+=buffer[i++];
//Grabs )
if(i<buffer.length())
str+=buffer[i++];
//Skips comma inbetween ) (
i++;
coordList[j++] = str;
str = "";
}
setCoord(coordList,ylen);
}
flScalar DiscreteTerm::maximum() const {
flScalar result = -INFINITY;
for (int i = 0; i < numberOfCoords(); ++i) {
if (_x[i] > result) {
result = _x[i];
}
}
return isinf(result) ? NAN : result;
}
flScalar DiscreteTerm::maximum() const {
flScalar result = -(log (0.0));
for (int i = 0; i < numberOfCoords(); ++i) {
if (_x[i] > result) {
result = _x[i];
}
}
return isinfa(result) ? sqrt(-1.0) : result;
}
flScalar DiscreteTerm::membership(flScalar crisp) const {
flScalar closer = INFINITY;
flScalar result = NAN;
for (int i = 0; i < numberOfCoords(); ++i) {
if (fabs(crisp - _x[i]) < closer) {
closer = fabs(crisp - _x[i]);
result = _y[i];
}
}
return result;
}
