Clause
Clause::operator-(const Clause &rhs) const
{
return(Clause(*this) -= rhs);
}
bool Clause::assign(VarAssignment newAss, Clause& dest) const{
switch(n){
case 3:
if(VAR(a)==VAR(newAss.val)){
if(a==newAss.val){
return true;
} else {
dest = Clause(b,c);
return false;
}
}
if(VAR(b)==VAR(newAss.val)){
if(b==newAss.val){
return true;
} else {
dest = Clause(a,c);
return false;
}
}
if(VAR(c)==VAR(newAss.val)){
if(c==newAss.val){
return true;
} else {
dest = Clause(a,b);
return false;
}
}
break;
case 2:
if(VAR(a)==VAR(newAss.val)){
if(a==newAss.val){
return true;
} else {
dest = Clause(b);
return false;
}
}
if(VAR(b)==VAR(newAss.val)){
if(b==newAss.val){
return true;
} else {
dest = Clause(a);
return false;
}
}
break;
case 1:
if(VAR(a)==VAR(newAss.val)){
if(a==newAss.val){
return true;
} else {
dest = Clause();
return false;
}
}
break;
}
throw "Assigned irrelevant variable";
}
