Fixed a bug in is_polynomial() that caused expressions like

[ginac.git] / check / exam_paranoia.cpp

diff --git a/check/exam_paranoia.cpp b/check/exam_paranoia.cpp
index 5fdfb350dab6165fda50c0a7558535010ebbaee8..972270f835c22a92795fb096a91f0685f4fb4a66 100644 (file)
--- a/check/exam_paranoia.cpp
+++ b/check/exam_paranoia.cpp
@@ -494,6 +494,18 @@ static unsigned exam_paranoia19()
        return 0;
 }
 
+// Bug in expairseq::is_polynomial (fixed 2011-05-20).
+static unsigned exam_paranoia20()
+{
+       symbol x("x");
+       ex e = sqrt(x*x+1)*sqrt(x+1);
+       if (e.is_polynomial(x)) {
+               clog << "sqrt(x*x+1)*sqrt(x+1) is wrongly reported to be a polynomial in x\n";
+               return 1;
+       }
+       return 0;
+}
+
 unsigned exam_paranoia()
 {
        unsigned result = 0;
@@ -519,6 +531,7 @@ unsigned exam_paranoia()
        result += exam_paranoia17();  cout << '.' << flush;
        result += exam_paranoia18();  cout << '.' << flush;
        result += exam_paranoia19();  cout << '.' << flush;
+       result += exam_paranoia20();  cout << '.' << flush;
        
        return result;
 }