X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Frelational.h;h=7426e19ecea8af712554ba7ba9575fa1fc179e86;hp=6f5009df33998a28498dfad456aaf2012dfdac0a;hb=0a68f1165c65a61d6f6ab6ef47485c9c8193b560;hpb=66c0f31c678e6c1938d637636b230ea376c157c1

diff --git a/ginac/relational.h b/ginac/relational.h
index 6f5009df..7426e19e 100644
--- a/ginac/relational.h
+++ b/ginac/relational.h
@@ -1,7 +1,8 @@
 /** @file relational.h
  *
- *  Interface to relations between expressions.
- *
+ *  Interface to relations between expressions. */
+
+/*
  *  GiNaC Copyright (C) 1999 Johannes Gutenberg University Mainz, Germany
  *
  *  This program is free software; you can redistribute it and/or modify
@@ -25,6 +26,8 @@
 #include <ginac/basic.h>
 #include <ginac/ex.h>
 
+namespace GiNaC {
+
 /** This class holds a relation consisting of two expressions and a logical
  *  relation between them. */
 class relational : public basic
@@ -94,8 +97,12 @@ protected:
 extern const relational some_relational;
 extern type_info const & typeid_relational;
 
-#define ex_to_relational(X) static_cast<relational const &>(*(X).bp)
-
-#endif // ndef __GINAC_RELATIONAL_H__
+// utility functions
+inline const relational &ex_to_relational(const ex &e)
+{
+	return static_cast<const relational &>(*e.bp);
+}
 
+} // namespace GiNaC
 
+#endif // ndef __GINAC_RELATIONAL_H__