From: Chris Dams <Chris.Dams@mi.infn.it>
Date: Tue, 13 Feb 2007 15:14:14 +0000 (+0000)
Subject: Make series expansion work with non-rational functions. Patch by Alexei.
X-Git-Tag: release_1-4-0~31
X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=commitdiff_plain;h=d0b3e67ddbbe031fefbe3e88e8bf8860424d0d4b

Make series expansion work with non-rational functions. Patch by Alexei.
---

diff --git a/ginac/pseries.cpp b/ginac/pseries.cpp
index 0e1f1833..1e61e0ae 100644
--- a/ginac/pseries.cpp
+++ b/ginac/pseries.cpp
@@ -1100,7 +1100,10 @@ ex power::series(const relational & r, int order, unsigned options) const
 	}
 	const ex& sym = r.lhs();
 	// find existing minimal degree
-	int real_ldegree = basis.expand().ldegree(sym-r.rhs());
+	ex eb = basis.expand();
+	int real_ldegree = 0;
+	if (eb.info(info_flags::rational_function))
+		real_ldegree = eb.ldegree(sym-r.rhs());
 	if (real_ldegree == 0) {
 		int orderloop = 0;
 		do {