X-Git-Url: https://ginac.de/ginac.git//ginac.git?a=blobdiff_plain;f=ginac%2Fmatrix.h;h=b1ee32814b926f15d4a90b6387770394d01214ae;hb=b16d5b34f40c9dcd6bd4f9e1fdeeb65cb1612db3;hp=02748413837452a84a50fd42da9162e4791514d9;hpb=1be7026a705dfefedcd838e6b60795ca6d469bf9;p=ginac.git

diff --git a/ginac/matrix.h b/ginac/matrix.h
index 02748413..b1ee3281 100644
--- a/ginac/matrix.h
+++ b/ginac/matrix.h
@@ -3,7 +3,7 @@
  *  Interface to symbolic matrices */
 
 /*
- *  GiNaC Copyright (C) 1999-2018 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2019 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
@@ -148,17 +148,20 @@ public:
 	ex determinant(unsigned algo = determinant_algo::automatic) const;
 	ex trace() const;
 	ex charpoly(const ex & lambda) const;
-	matrix inverse() const { return inverse(solve_algo::automatic); }
+	matrix inverse() const;
 	matrix inverse(unsigned algo) const;
 	matrix solve(const matrix & vars, const matrix & rhs,
 	             unsigned algo = solve_algo::automatic) const;
 	unsigned rank() const;
+	unsigned rank(unsigned solve_algo) const;
 	bool is_zero_matrix() const;
 protected:
 	ex determinant_minor() const;
+	std::vector<unsigned> echelon_form(unsigned algo, int n);
 	int gauss_elimination(const bool det = false);
 	int division_free_elimination(const bool det = false);
 	int fraction_free_elimination(const bool det = false);
+	std::vector<unsigned> markowitz_elimination(unsigned n);
 	int pivot(unsigned ro, unsigned co, bool symbolic = true);
 
 	void print_elements(const print_context & c, const char *row_start, const char *row_end, const char *row_sep, const char *col_sep) const;
@@ -218,6 +221,8 @@ inline matrix inverse(const matrix & m, unsigned algo)
 
 inline unsigned rank(const matrix & m)
 { return m.rank(); }
+inline unsigned rank(const matrix & m, unsigned solve_algo)
+{ return m.rank(solve_algo); }
 
 // utility functions