input_parser accepts also pow() [A.Sheplyakov]

[ginac.git] / ginac / input_parser.yy

diff --git a/ginac/input_parser.yy b/ginac/input_parser.yy
index f9ead9e11b8a6d5d446bf96697dd2fdb7bcfab2c..74beb4c54f44464ff78ccfd97f726186b384269f 100644 (file)
--- a/ginac/input_parser.yy
+++ b/ginac/input_parser.yy
@@ -4,7 +4,7 @@
  *  This file must be processed with yacc/bison. */
 
 /*
- *  GiNaC Copyright (C) 1999-2005 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2007 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
@@ -18,7 +18,7 @@
  *
  *  You should have received a copy of the GNU General Public License
  *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
 
@@ -105,6 +105,10 @@ exp        : T_NUMBER              {$$ = $1;}
                        if ($3.nops() != 1)
                                throw (std::runtime_error("too many arguments to sqrt()"));
                        $$ = sqrt($3.op(0));
+               } else if (n == "pow" || n == "power") {
+                 if ($3.nops() != 2) 
+                         throw std::invalid_argument("wrong number of arguments to pow()");
+                       $$ = power($3.op(0), $3.op(0));
                } else {
                        unsigned i = function::find_function(n, $3.nops());
                        $$ = function(i, ex_to<exprseq>($3)).eval(1);