#ifndef __GINAC_NORMAL_H__
#define __GINAC_NORMAL_H__
+#include "lst.h"
+
namespace GiNaC {
class ex;
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