return result;
}
+static unsigned check_factorization(const exvector& factors)
+{
+ ex e = (new mul(factors))->setflag(status_flags::dynallocated);
+ ex ef = factor(e.expand());
+ if (ef.nops() != factors.size()) {
+ clog << "wrong number of factors, expected " << factors.size() <<
+ ", got " << ef.nops();
+ return 1;
+ }
+ for (size_t i = 0; i < ef.nops(); ++i) {
+ if (find(factors.begin(), factors.end(), ef.op(i)) == factors.end()) {
+ clog << "wrong factorization: term not found: " << ef.op(i);
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static unsigned factor_integer_content_bug()
+{
+ parser reader;
+ exvector factors;
+ factors.push_back(reader("x+y+x*y"));
+ factors.push_back(reader("3*x+2*y"));
+ return check_factorization(factors);
+}
+
unsigned exam_factor()
{
unsigned result = 0;
result += exam_factor1(); cout << '.' << flush;
result += exam_factor2(); cout << '.' << flush;
result += exam_factor3(); cout << '.' << flush;
+ result += factor_integer_content_bug();
+ cout << '.' << flush;
return result;
}