Fixing bug with respect to canonicalizing the variance of dummy indices in

[ginac.git] / ginac / matrix.cpp

diff --git a/ginac/matrix.cpp b/ginac/matrix.cpp
index f62e2d409244d8a50d44890b8eae74f8ac5e4eb1..bc58245f8f0e7cc8cf33134ce30b80e2cddd8590 100644 (file)
--- a/ginac/matrix.cpp
+++ b/ginac/matrix.cpp
@@ -262,6 +262,24 @@ ex matrix::conjugate() const
        return *this;
 }
 
+ex matrix::real_part() const
+{
+       exvector v;
+       v.reserve(m.size());
+       for (exvector::const_iterator i=m.begin(); i!=m.end(); ++i)
+               v.push_back(i->real_part());
+       return matrix(row, col, v);
+}
+
+ex matrix::imag_part() const
+{
+       exvector v;
+       v.reserve(m.size());
+       for (exvector::const_iterator i=m.begin(); i!=m.end(); ++i)
+               v.push_back(i->imag_part());
+       return matrix(row, col, v);
+}
+
 // protected
 
 int matrix::compare_same_type(const basic & other) const
@@ -1509,6 +1527,16 @@ int matrix::pivot(unsigned ro, unsigned co, bool symbolic)
        return k;
 }
 
+/** Function to check that all elements of the matrix are zero.
+ */
+bool matrix::is_zero_matrix() const
+{
+       for (exvector::const_iterator i=m.begin(); i!=m.end(); ++i) 
+               if(!(i->is_zero()))
+                       return false;
+       return true;
+}
+
 ex lst_to_matrix(const lst & l)
 {
        lst::const_iterator itr, itc;