Added series expansion for functions (classical) Li and S around x==0.

[ginac.git] / check / exam_matrices.cpp

diff --git a/check/exam_matrices.cpp b/check/exam_matrices.cpp
index 9a88c8c2bc80af55f7f3197ade0828280d8f465f..3daee77ea66d7d34c8b3dc7305227b0d0434f1b2 100644 (file)
--- a/check/exam_matrices.cpp
+++ b/check/exam_matrices.cpp
@@ -3,7 +3,7 @@
  *  Here we examine manipulations on GiNaC's symbolic matrices. */
 
 /*
- *  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
@@ -17,7 +17,7 @@
  *
  *  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 <stdexcept>
@@ -241,6 +241,46 @@ static unsigned matrix_evalm()
        return result;
 }
 
+static unsigned matrix_rank()
+{
+       unsigned result = 0;
+       symbol x("x"), y("y");
+       matrix m(3,3);
+
+       // the zero matrix always has rank 0
+       if (m.rank() != 0) {
+               clog << "The rank of " << m << " was not computed correctly." << endl;
+               ++result;
+       }
+
+       // a trivial rank one example
+       m = 1, 0, 0,
+           2, 0, 0,
+           3, 0, 0;
+       if (m.rank() != 1) {
+               clog << "The rank of " << m << " was not computed correctly." << endl;
+               ++result;
+       }
+
+       // an example from Maple's help with rank two
+       m = x,  1,  0,
+           0,  0,  1,
+          x*y, y,  1;
+       if (m.rank() != 2) {
+               clog << "The rank of " << m << " was not computed correctly." << endl;
+               ++result;
+       }
+
+       // the 3x3 unit matrix has rank 3
+       m = ex_to<matrix>(unit_matrix(3,3));
+       if (m.rank() != 3) {
+               clog << "The rank of " << m << " was not computed correctly." << endl;
+               ++result;
+       }
+
+       return result;  
+}
+
 static unsigned matrix_misc()
 {
        unsigned result = 0;
@@ -305,6 +345,7 @@ unsigned exam_matrices()
        result += matrix_invert3();  cout << '.' << flush;
        result += matrix_solve2();  cout << '.' << flush;
        result += matrix_evalm();  cout << "." << flush;
+       result += matrix_rank();  cout << "." << flush;
        result += matrix_misc();  cout << '.' << flush;
        
        if (!result) {