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[ginac.git] / doc / tutorial / ginac.texi

diff --git a/doc/tutorial/ginac.texi b/doc/tutorial/ginac.texi
index 1021a32a22760cced31fd114e686d27e8a1c01cd..934e3193facde1a4bf08042b6d6667e854601381 100644 (file)
--- a/doc/tutorial/ginac.texi
+++ b/doc/tutorial/ginac.texi
@@ -24,7 +24,7 @@
 This is a tutorial that documents GiNaC @value{VERSION}, an open
 framework for symbolic computation within the C++ programming language.
 
-Copyright (C) 1999-2015 Johannes Gutenberg University Mainz, Germany
+Copyright (C) 1999-2016 Johannes Gutenberg University Mainz, Germany
 
 Permission is granted to make and distribute verbatim copies of
 this manual provided the copyright notice and this permission notice
@@ -52,7 +52,7 @@ notice identical to this one.
 
 @page
 @vskip 0pt plus 1filll
-Copyright @copyright{} 1999-2015 Johannes Gutenberg University Mainz, Germany
+Copyright @copyright{} 1999-2016 Johannes Gutenberg University Mainz, Germany
 @sp 2
 Permission is granted to make and distribute verbatim copies of
 this manual provided the copyright notice and this permission notice
@@ -135,7 +135,7 @@ the near future.
 
 @section License
 The GiNaC framework for symbolic computation within the C++ programming
-language is Copyright @copyright{} 1999-2015 Johannes Gutenberg
+language is Copyright @copyright{} 1999-2016 Johannes Gutenberg
 University Mainz, Germany.
 
 This program is free software; you can redistribute it and/or
@@ -484,10 +484,10 @@ required for the configuration, it can be downloaded from
 @uref{http://pkg-config.freedesktop.org}.
 Last but not least, the CLN library
 is used extensively and needs to be installed on your system.
-Please get it from @uref{ftp://ftpthep.physik.uni-mainz.de/pub/gnu/}
-(it is covered by GPL) and install it prior to trying to install
-GiNaC.  The configure script checks if it can find it and if it cannot
-it will refuse to continue.
+Please get it from @uref{http://www.ginac.de/CLN/} (it is licensed under
+the GPL) and install it prior to trying to install GiNaC.  The configure
+script checks if it can find it and if it cannot, it will refuse to
+continue.
 
 
 @node Configuration, Building GiNaC, Prerequisites, Installation
@@ -3033,6 +3033,8 @@ canonicalize themselves according to rules specified in the implementation
 of the non-commutative classes. The drawback is that to work with other than
 the built-in algebras you have to implement new classes yourself. Both
 symbols and user-defined functions can be specified as being non-commutative.
+For symbols, this is done by subclassing class symbol; for functions,
+by explicitly setting the return type (@pxref{Symbolic functions}).
 
 @cindex @code{return_type()}
 @cindex @code{return_type_tinfo()}
@@ -6505,7 +6507,7 @@ to map input (sub)strings to arbitrary expressions:
     table["x"] = x+log(y)+1;
     parser reader(table);
     ex e = reader("5*x^3 - x^2");
-    // e = 5*(x+log(y)+1)^3 + (x+log(y)+1)^2
+    // e = 5*(x+log(y)+1)^3 - (x+log(y)+1)^2
 @}
 @end example
 
@@ -6518,8 +6520,8 @@ with @code{get_syms()} method:
     parser reader;
     ex e = reader("2*x+sin(y)");
     symtab table = reader.get_syms();
-    symbol x = reader["x"];
-    symbol y = reader["y"];
+    symbol x = ex_to<symbol>(table["x"]);
+    symbol y = ex_to<symbol>(table["y"]);
 @}
 @end example