X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Fmatrix.h;h=8544c9db9698a0b7cb05bc3699be3ef873dc8b05;hp=08c9fe8888f547bb750e5383b88e4d4021299004;hb=ff09c4f8103f53fe3b7a51eb3c33eff2e5a243f0;hpb=690cd58cc13ad5052eb5851c573984965d0c40c1

diff --git a/ginac/matrix.h b/ginac/matrix.h
index 08c9fe88..8544c9db 100644
--- a/ginac/matrix.h
+++ b/ginac/matrix.h
@@ -3,7 +3,7 @@
  *  Interface to symbolic matrices */
 
 /*
- *  GiNaC Copyright (C) 1999-2006 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2008 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
@@ -151,6 +151,7 @@ public:
 	matrix solve(const matrix & vars, const matrix & rhs,
 	             unsigned algo = solve_algo::automatic) const;
 	unsigned rank() const;
+	bool is_zero_matrix() const;
 protected:
 	ex determinant_minor() const;
 	int gauss_elimination(const bool det = false);