- added ex::to_rational() to convert general expression to rational expression

[ginac.git] / ginac / normal.h

diff --git a/ginac/normal.h b/ginac/normal.h
index 451d15558fd6e4ec27f993963f268229585739ef..25a1743bb6f15f4edb921d9769ca532488fdde47 100644 (file)
--- a/ginac/normal.h
+++ b/ginac/normal.h
@@ -1,15 +1,37 @@
 /** @file normal.h
  *
- *  Functions for polynomial quotient and remainder, GCD and LCM computation
- *  and square-free factorization. */
+ *  This file defines several functions that work on univariate and
+ *  multivariate polynomials and rational functions.
+ *  These functions include polynomial quotient and remainder, GCD and LCM
+ *  computation, square-free factorization and rational function normalization. */
 
-#ifndef NORMAL_H
-#define NORMAL_H
+/*
+ *  GiNaC Copyright (C) 1999-2000 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
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  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
+ */
 
-#include "ex.h"
+#ifndef __GINAC_NORMAL_H__
+#define __GINAC_NORMAL_H__
 
-class symbol;
+#ifndef NO_NAMESPACE_GINAC
+namespace GiNaC {
+#endif // ndef NO_NAMESPACE_GINAC
 
+class ex;
+class symbol;
 
 // Quotient q(x) of polynomials a(x) and b(x) in Q[x], so that a(x)=b(x)*q(x)+r(x)
 extern ex quo(const ex &a, const ex &b, const symbol &x, bool check_args = true);
@@ -32,4 +54,8 @@ extern ex lcm(const ex &a, const ex &b, bool check_args = true);
 // Square-free factorization of a polynomial a(x)
 extern ex sqrfree(const ex &a, const symbol &x);
 
-#endif
+#ifndef NO_NAMESPACE_GINAC
+} // namespace GiNaC
+#endif // ndef NO_NAMESPACE_GINAC
+
+#endif // ndef __GINAC_NORMAL_H__