normal.cpp, normal.h: Fix Yun's algorithm (there was a mistake in Geddes et

[ginac.git] / ginac / normal.h

diff --git a/ginac/normal.h b/ginac/normal.h
index 0fa3a4418b4f4876cbedb70fa4ab0ac09c28b3cc..fb6960f41f7fd13a813a30c507f202ce75fe371a 100644 (file)
--- a/ginac/normal.h
+++ b/ginac/normal.h
@@ -1,10 +1,12 @@
 /** @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. */
 
 /*
- *  GiNaC Copyright (C) 1999 Johannes Gutenberg University Mainz, Germany
+ *  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
@@ -24,6 +26,8 @@
 #ifndef __GINAC_NORMAL_H__
 #define __GINAC_NORMAL_H__
 
+#include "lst.h"
+
 namespace GiNaC {
 
 class ex;
@@ -48,7 +52,7 @@ extern ex gcd(const ex &a, const ex &b, ex *ca = NULL, ex *cb = NULL, bool check
 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