Make add::eval(), mul::eval() work without compromise.

[ginac.git] / check / exam_paranoia.cpp

diff --git a/check/exam_paranoia.cpp b/check/exam_paranoia.cpp
index 711c64a67c8472805d59eaa992fdbc0d2c1ff940..6ab452baacea520b1ccf6be6f147b55665c97399 100644 (file)
--- a/check/exam_paranoia.cpp
+++ b/check/exam_paranoia.cpp
@@ -568,6 +568,33 @@ static unsigned exam_paranoia22()
        return 0;
 }
 
+// Bug in expairseq::evalchildren().
+static unsigned exam_paranoia23()
+{
+       unsigned result = 0;
+       symbol x("x");
+
+       epvector v1;
+       v1.push_back(expair(1, 1));
+       v1.push_back(expair(2*x, -1));
+       ex e1 = add(v1);  // Should be e==1-2*x,
+       if (!e1.is_equal(1-2*x)) {
+               clog << "Failure constructing " << e1 << " from add.\n";
+               ++result;
+       }
+
+       epvector v2;
+       v2.push_back(expair(x, 1));
+       v2.push_back(expair(1,-1));
+       ex e2 = mul(v2);  // Should be e==x;
+       if (!e2.is_equal(x)) {
+               clog << "Failure constructing " << e2 << " from mul.\n";
+               ++result;
+       }
+
+       return result;
+}
+
 unsigned exam_paranoia()
 {
        unsigned result = 0;
@@ -597,6 +624,7 @@ unsigned exam_paranoia()
        result += is_polynomial_false_positive(); cout << '.' << flush;
        result += exam_paranoia21();  cout << '.' << flush;
        result += exam_paranoia22();  cout << '.' << flush;
+       result += exam_paranoia23();  cout << '.' << flush;
        
        return result;
 }