- 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 731ab5ae24520e7a08cd1f9b22ee33230d039c4f..25a1743bb6f15f4edb921d9769ca532488fdde47 100644 (file)
--- a/ginac/normal.h
+++ b/ginac/normal.h
@@ -1,9 +1,12 @@
 /** @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) 1999-2000 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
@@ -20,8 +23,15 @@
  *  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__
+
+#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);
@@ -44,4 +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__