X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Fmul.h;h=65a291b7993a2b0216c0791541e117333cb705c0;hp=2808db99addaf9312ad29a9a6d5b06ce9f484193;hb=5ee44dd79aa73563b4872c6e22d5338266f1adc0;hpb=c8ba9c6cf819792cbf88d25b324406b67d5cc49a

diff --git a/ginac/mul.h b/ginac/mul.h
index 2808db99..65a291b7 100644
--- a/ginac/mul.h
+++ b/ginac/mul.h
@@ -3,7 +3,7 @@
  *  Interface to GiNaC's products of expressions. */
 
 /*
- *  GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2002 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
@@ -45,7 +45,7 @@ public:
 	mul(epvector * vp, const ex & oc);
 	mul(const ex & lh, const ex & mh, const ex & rh);
 	
-	// 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 precedence(void) const {return 50;}
@@ -90,9 +90,11 @@ protected:
 };
 
 // utility functions
-inline const mul &ex_to_mul(const ex &e)
+
+/** Specialization of is_exactly_a<mul>(obj) for mul objects. */
+template<> inline bool is_exactly_a<mul>(const basic & obj)
 {
-	return static_cast<const mul &>(*e.bp);
+	return obj.tinfo()==TINFO_mul;
 }
 
 } // namespace GiNaC