X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?a=blobdiff_plain;f=ginac%2Fmatrix.h;h=4dc2ee0584e1cad9c78fcf3752700093da75e305;hb=1d07d8ac9fb47c51aa19a84df6c8c5fee5dd5105;hp=927c27c1434896cc2776f69c0c222e3114e3e094;hpb=708e9e647029af699333fceffc0a76bef70a4709;p=ginac.git

diff --git a/ginac/matrix.h b/ginac/matrix.h
index 927c27c1..4dc2ee05 100644
--- a/ginac/matrix.h
+++ b/ginac/matrix.h
@@ -3,7 +3,7 @@
  *  Interface to symbolic matrices */
 
 /*
- *  GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2003 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
@@ -24,6 +24,7 @@
 #define __GINAC_MATRIX_H__
 
 #include <vector>
+#include <string>
 #include "basic.h"
 #include "ex.h"
 
@@ -40,7 +41,7 @@ public:
 	matrix(unsigned r, unsigned c, const exvector & m2);
 	matrix(unsigned r, unsigned c, const lst & l);
 	
-	// functions overriding virtual functions from bases classes
+	// functions overriding virtual functions from base classes
 public:
 	void print(const print_context & c, unsigned level = 0) const;
 	unsigned nops() const;
@@ -132,13 +133,6 @@ inline matrix inverse(const matrix & m)
 
 // utility functions
 
-/** Return the matrix object handled by an ex.  Deprecated: use ex_to<matrix>().
- *  This is unsafe: you need to check the type first. */
-inline const matrix &ex_to_matrix(const ex &e)
-{
-	return static_cast<const matrix &>(*e.bp);
-}
-
 /** Specialization of is_exactly_a<matrix>(obj) for matrix objects. */
 template<> inline bool is_exactly_a<matrix>(const basic & obj)
 {
@@ -151,6 +145,23 @@ extern ex lst_to_matrix(const lst & l);
 /** Convert list of diagonal elements to matrix. */
 extern ex diag_matrix(const lst & l);
 
+/** Create an r times c unit matrix. */
+extern ex unit_matrix(unsigned r, unsigned c);
+
+/** Create a x times x unit matrix. */
+inline ex unit_matrix(unsigned x)
+{ return unit_matrix(x, x); }
+
+/** Create an r times c matrix of newly generated symbols consisting of the
+ *  given base name plus the numeric row/column position of each element.
+ *  The base name for LaTeX output is specified separately. */
+extern ex symbolic_matrix(unsigned r, unsigned c, const std::string & base_name, const std::string & tex_base_name);
+
+/** Create an r times c matrix of newly generated symbols consisting of the
+ *  given base name plus the numeric row/column position of each element. */
+inline ex symbolic_matrix(unsigned r, unsigned c, const std::string & base_name)
+{ return symbolic_matrix(r, c, base_name, base_name); }
+
 } // namespace GiNaC
 
 #endif // ndef __GINAC_MATRIX_H__