Hide failure due to term reordering.

[ginac.git] / check / exam_paranoia.cpp

diff --git a/check/exam_paranoia.cpp b/check/exam_paranoia.cpp
index c1df502c9282282311ee536513d326219c23be96..035235a5086df29230e0a02d6b4586c2e3d95526 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... */
 
 /*
  *  these oopses for good, so we run those stupid tests... */
 
 /*

- *  GiNaC Copyright (C) 1999-2003 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2007 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
  *
  *  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
  *
  *  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"
  */
 
 #include "exams.h"


@@ -283,7 +283,7 @@ static unsigned exam_paranoia11()
 
        ex e = ((-5-2*x)-((2-5*x)/(-2+x))*(3+2*x))/(5-4*x);
        ex f = e.normal();
 
        ex e = ((-5-2*x)-((2-5*x)/(-2+x))*(3+2*x))/(5-4*x);
        ex f = e.normal();

-       ex d = (4+10*x+8*pow(x,2))/(x-2)/(5-4*x);
+       ex d = normal((4+10*x+8*pow(x,2))/(x-2)/(5-4*x));

 
        if (!(f - d).expand().is_zero()) {
                clog << "normal(" << e << ") returns " << f << " instead of " << d << endl;
 
        if (!(f - d).expand().is_zero()) {
                clog << "normal(" << e << ") returns " << f << " instead of " << d << endl;


@@ -370,6 +370,100 @@ static unsigned exam_paranoia15()
        return result;
 }
 
        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;
+}
+
+// Bug in reposition_dummy_indices() could result in correct expression
+// turned into one with inconsistent indices. Fixed on Aug 29, 2006
+static unsigned exam_paranoia17()
+{
+       varidx mu1(symbol("mu1"), 4);
+       varidx mu2(symbol("mu2"), 4);
+       varidx mu3(symbol("mu3"), 4);
+       varidx mu4(symbol("mu4"), 4);
+       varidx mu5(symbol("mu5"), 4);
+       varidx mu6(symbol("mu6"), 4);
+
+       exvector ev2;
+       ev2.push_back(mu3.toggle_variance());
+       ev2.push_back(mu6);
+       ev2.push_back(mu5.toggle_variance());
+       ev2.push_back(mu6.toggle_variance());
+       ev2.push_back(mu5);
+       ev2.push_back(mu3); 
+       // notice: all indices are contracted ...
+
+       ex test_cycl = indexed(symbol("A"), sy_cycl(), ev2);
+       test_cycl = test_cycl.simplify_indexed();
+       // ... so there should be zero free indices in the end.
+       return test_cycl.get_free_indices().size();
+}
+
+

 unsigned exam_paranoia()
 {
        unsigned result = 0;
 unsigned exam_paranoia()
 {
        unsigned result = 0;


@@ -392,6 +486,8 @@ unsigned exam_paranoia()
        result += exam_paranoia13();  cout << '.' << flush;
        result += exam_paranoia14();  cout << '.' << flush;
        result += exam_paranoia15();  cout << '.' << flush;
        result += exam_paranoia13();  cout << '.' << flush;
        result += exam_paranoia14();  cout << '.' << flush;
        result += exam_paranoia15();  cout << '.' << flush;

+       result += exam_paranoia16();  cout << '.' << flush;
+       result += exam_paranoia17();  cout << '.' << flush;

        
        if (!result) {
                cout << " passed " << endl;
        
        if (!result) {
                cout << " passed " << endl;