Made also ncmuls rename dummy indices.

[ginac.git] / check / exam_paranoia.cpp

diff --git a/check/exam_paranoia.cpp b/check/exam_paranoia.cpp
index c1df502c9282282311ee536513d326219c23be96..7c82e48662d9181256a5ebc044edd2b501f3d3e4 100644 (file)
--- a/check/exam_paranoia.cpp
+++ b/check/exam_paranoia.cpp
@@ -6,7 +6,7 @@
  *  these oopses for good, so we run those stupid tests... */
 
 /*
- *  GiNaC Copyright (C) 1999-2003 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2005 Johannes Gutenberg University Mainz, Germany
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -20,7 +20,7 @@
  *
  *  You should have received a copy of the GNU General Public License
  *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
 #include "exams.h"
@@ -370,6 +370,73 @@ static unsigned exam_paranoia15()
        return result;
 }
 
+// Expanding products containing powers of sums could return results that
+// were not fully expanded. Fixed on Dec 10, 2003.
+static unsigned exam_paranoia16()
+{
+       unsigned result = 0;
+       symbol a("a"), b("b"), c("c"), d("d"), e("e");
+       ex e1, e2, e3;
+
+       e1 = pow(1+a*sqrt(b+c), 2);
+       e2 = e1.expand();
+
+       if (e2.has(pow(a, 2)*(b+c))) {
+               clog << "expand(" << e1 << ") didn't fully expand\n";
+               ++result;
+       }
+
+       e1 = (d*sqrt(a+b)+a*sqrt(c+d))*(b*sqrt(a+b)+a*sqrt(c+d));
+       e2 = e1.expand();
+
+       if (e2.has(pow(a, 2)*(c+d))) {
+               clog << "expand(" << e1 << ") didn't fully expand\n";
+               ++result;
+       }
+
+       e1 = (a+sqrt(b+c))*sqrt(b+c)*(d+sqrt(b+c));
+       e2 = e1.expand();
+
+       if (e2.has(a*(b+c))) {
+               clog << "expand(" << e1 << ") didn't fully expand\n";
+               ++result;
+       }
+
+       e1 = pow(sqrt(a+b)+sqrt(c+d), 3);
+       e2 = e1.expand();
+
+       if (e2.has(3*(a+b)*sqrt(c+d)) || e2.has(3*(c+d)*sqrt(a+b))) {
+               clog << "expand(" << e1 << ") didn't fully expand\n";
+               ++result;
+       }
+
+       e1 = a*(b+c*(d+e));
+       e2 = e1.expand();
+
+       if (e2.has(c*(d+e))) {
+               clog << "expand(" << e1 << ") didn't fully expand\n";
+               ++result;
+       }
+
+       e1 = 2*pow(1+a, 2)/a;
+       e2 = e1.expand();
+
+       if (e2.has(pow(a, 2))) {
+               clog << "expand(" << e1 << ") didn't fully expand\n";
+               ++result;
+       }
+
+       e1 = a*(a+b);
+       e2 = pow(pow(e1, -1), -1);
+
+       if (e2.has(a*b)) {
+               clog << "double reciprocal expanded where it should not\n";
+               ++result;
+       }
+
+       return result;
+}
+
 unsigned exam_paranoia()
 {
        unsigned result = 0;
@@ -392,6 +459,7 @@ unsigned exam_paranoia()
        result += exam_paranoia13();  cout << '.' << flush;
        result += exam_paranoia14();  cout << '.' << flush;
        result += exam_paranoia15();  cout << '.' << flush;
+       result += exam_paranoia16();  cout << '.' << flush;
        
        if (!result) {
                cout << " passed " << endl;