X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Fnormal.h;h=9196f965cf428ec5478f9223c174cc5be4d44169;hp=731ab5ae24520e7a08cd1f9b22ee33230d039c4f;hb=3dfe5d31528291d1be6b1fe1180622efdabfebde;hpb=a8507b8af1c08d9b27d98d57f95c7ca1a8671e27

diff --git a/ginac/normal.h b/ginac/normal.h
index 731ab5ae..9196f965 100644
--- 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) 1999-2002 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__
+
+#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);
@@ -29,9 +39,15 @@ extern ex quo(const ex &a, const ex &b, const symbol &x, bool check_args = true)
 // Remainder r(x) of polynomials a(x) and b(x) in Q[x], so that a(x)=b(x)*q(x)+r(x)
 extern ex rem(const ex &a, const ex &b, const symbol &x, bool check_args = true);
 
-// Pseudo-remainder of polynomials a(x) and b(x) in Z[x]
+// Decompose rational function a(x)=N(x)/D(x) into Q(x)+R(x)/D(x) with degree(R, x) < degree(D, x)
+extern ex decomp_rational(const ex &a, const symbol &x);
+
+// Pseudo-remainder of polynomials a(x) and b(x) in Q[x]
 extern ex prem(const ex &a, const ex &b, const symbol &x, bool check_args = true);
 
+// Pseudo-remainder of polynomials a(x) and b(x) in Q[x]
+extern ex sprem(const ex &a, const ex &b, const symbol &x, bool check_args = true);
+
 // Exact polynomial division of a(X) by b(X) in Q[X] (quotient returned in q), returns false when exact division fails
 extern bool divide(const ex &a, const ex &b, ex &q, bool check_args = true);
 
@@ -42,6 +58,14 @@ 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());
+
+// Square-free partial fraction decomposition of a rational function a(x)
+extern ex sqrfree_parfrac(const ex & a, const symbol & x);
+
+// Collect common factors in sums.
+extern ex collect_common_factors(const ex & e);
+
+} // namespace GiNaC
 
-#endif
+#endif // ndef __GINAC_NORMAL_H__