}
// Bug in add::eval() could result in numeric terms not being collected into
-// the overall coefficient. Fixed on Sep 22, 2010
+// the overall coefficient. Fixed first on Sep 22, 2010 and again on Dec 17 2015
static unsigned exam_paranoia18()
{
+ unsigned result = 0;
+
ex sqrt2 = sqrt(ex(2));
- ex e = 1+2*(sqrt2+1)*(sqrt2-1);
- if ( e.real_part() != 3 ) {
+ ex e = 1 + 2*(sqrt2+1)*(sqrt2-1);
+ if (e.real_part() != 3) {
clog << "real_part(1+2*(sqrt(2)+1)*(sqrt(2)-1)) failed to evaluate to 3\n";
- return 1;
+ ++result;
}
- return 0;
+
+ ex sqrt3 = sqrt(ex(3));
+ ex f = 2 + 2*(sqrt2+1)*(sqrt2-1) - 2*(sqrt3+1)*(sqrt3-1);
+ if (f.real_part() != 0) {
+ clog << "real_part(2+2*(sqrt(2)+1)*(sqrt(2)-1)-3*(sqrt(3)+1)*(sqrt(3)-1)) failed to evaluate to 0\n";
+ ++result;
+ }
+
+ return result;
}
// Bug in mul::conjugate when factors are evaluated at branch cuts, reported as
return 0;
}
+// Bug in power::expand (fixed 2015-07-18).
+static unsigned exam_paranoia22()
+{
+ symbol x("x"), y("y");
+ ex e = pow(sqrt(1+x)+y*sqrt(1+x), 2).expand();
+ if (e.nops() != 6) {
+ clog << "(sqrt(1+x)+y*sqrt(1+x))^2 was wrongly expanded to " << e << "\n";
+ return 1;
+ }
+ return 0;
+}
+
unsigned exam_paranoia()
{
unsigned result = 0;
result += exam_paranoia20(); cout << '.' << flush;
result += is_polynomial_false_positive(); cout << '.' << flush;
result += exam_paranoia21(); cout << '.' << flush;
+ result += exam_paranoia22(); cout << '.' << flush;
return result;
}