X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Findexed.h;h=ad32c2372fee25e55e0fef167de8be32000eeea0;hp=d798107f8cf31eb23ac272cfb89e136a3e9ac1f0;hb=54c1eca199508d821795ca08506f6e7788ebee91;hpb=f5e84af31b20c7f732bee375bacc152e7fb01e56

diff --git a/ginac/indexed.h b/ginac/indexed.h
index d798107f..ad32c237 100644
--- a/ginac/indexed.h
+++ b/ginac/indexed.h
@@ -3,7 +3,7 @@
  *  Interface to GiNaC's indexed expressions. */
 
 /*
- *  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
  */
 
 #ifndef __GINAC_INDEXED_H__
@@ -140,7 +140,7 @@ public:
 	// internal constructors
 	indexed(const symmetry & symm, const exprseq & es);
 	indexed(const symmetry & symm, const exvector & v, bool discardable = false);
-	indexed(const symmetry & symm, exvector * vp); // vp will be deleted
+	indexed(const symmetry & symm, std::auto_ptr<exvector> vp);
 
 	// functions overriding virtual functions from base classes
 public:
@@ -152,7 +152,7 @@ public:
 protected:
 	ex derivative(const symbol & s) const;
 	ex thiscontainer(const exvector & v) const;
-	ex thiscontainer(exvector * vp) const;
+	ex thiscontainer(std::auto_ptr<exvector> vp) const;
 	unsigned return_type() const { return return_types::commutative; }
 	ex expand(unsigned options = 0) const;
 
@@ -172,7 +172,8 @@ public:
 	exvector get_dummy_indices() const;
 
 	/** Return a vector containing the dummy indices in the contraction with
-	 *  another indexed object. */
+	 *  another indexed object. This is symmetric: a.get_dummy_indices(b)
+	 *  == b.get_dummy_indices(a) */
 	exvector get_dummy_indices(const indexed & other) const;
 
 	/** Check whether the object has an index that forms a dummy index pair
@@ -249,6 +250,23 @@ template<> inline bool is_exactly_a<indexed>(const basic & obj)
 	return obj.tinfo()==TINFO_indexed;
 }
 
+/** Returns all dummy indices from the expression */
+exvector get_all_dummy_indices(const ex & e);
+
+/** Returns b with all dummy indices, which are common with a, renamed */
+ex rename_dummy_indices_uniquely(const ex & a, const ex & b);
+
+/** This function returns the given expression with expanded sums
+ *  for all dummy index summations, where the dimensionality of 
+ *  the dummy index is numeric.
+ *  Optionally all indices with a variance will be substituted by 
+ *  indices with the corresponding numeric values without variance.
+ *
+ *  @param e the given expression
+ *  @param subs_idx indicates if variance of dummy indixes should be neglected
+ */
+ex expand_dummy_sum(const ex & e, bool subs_idx = false);
+
 } // namespace GiNaC
 
 #endif // ndef __GINAC_INDEXED_H__