/** @file normal.h
*
- * Functions for polynomial quotient and remainder, GCD and LCM computation
- * and square-free factorization.
- *
- * GiNaC Copyright (C) 1999 Johannes Gutenberg University Mainz, Germany
+ * 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. */
+
+/*
+ * GiNaC Copyright (C) 1999-2001 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
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#ifndef NORMAL_H
-#define NORMAL_H
+#ifndef __GINAC_NORMAL_H__
+#define __GINAC_NORMAL_H__
+
+#include "lst.h"
+
+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);
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);
+extern ex sqrfree(const ex &a, const lst &l = lst());
+
+} // namespace GiNaC
-#endif
+#endif // ndef __GINAC_NORMAL_H__