X-Git-Url: https://ginac.de/ginac.git//ginac.git?a=blobdiff_plain;ds=inline;f=check%2Fexam_paranoia.cpp;h=4d04e92a8c6f53ee8ff46322019519f1a4720e48;hb=695f6ae955ec530cded8f21efd5569df39447f76;hp=1104ebe9ed3c9ffc47c4358e9e40ce0a823e9772;hpb=87d731b215909cc8ab8ecdb8c05fcd717bf63fd2;p=ginac.git

diff --git a/check/exam_paranoia.cpp b/check/exam_paranoia.cpp
index 1104ebe9..4d04e92a 100644
--- a/check/exam_paranoia.cpp
+++ b/check/exam_paranoia.cpp
@@ -6,7 +6,7 @@
  *  these oopses for good, so we run those stupid tests... */
 
 /*
- *  GiNaC Copyright (C) 1999-2003 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2005 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
@@ -375,7 +375,7 @@ static unsigned exam_paranoia15()
 static unsigned exam_paranoia16()
 {
 	unsigned result = 0;
-	symbol a("a"), b("b"), c("c"), d("d");
+	symbol a("a"), b("b"), c("c"), d("d"), e("e");
 	ex e1, e2, e3;
 
 	e1 = pow(1+a*sqrt(b+c), 2);
@@ -402,6 +402,38 @@ static unsigned exam_paranoia16()
 		++result;
 	}
 
+	e1 = pow(sqrt(a+b)+sqrt(c+d), 3);
+	e2 = e1.expand();
+
+	if (e2.has(3*(a+b)*sqrt(c+d)) || e2.has(3*(c+d)*sqrt(a+b))) {
+		clog << "expand(" << e1 << ") didn't fully expand\n";
+		++result;
+	}
+
+	e1 = a*(b+c*(d+e));
+	e2 = e1.expand();
+
+	if (e2.has(c*(d+e))) {
+		clog << "expand(" << e1 << ") didn't fully expand\n";
+		++result;
+	}
+
+	e1 = 2*pow(1+a, 2)/a;
+	e2 = e1.expand();
+
+	if (e2.has(pow(a, 2))) {
+		clog << "expand(" << e1 << ") didn't fully expand\n";
+		++result;
+	}
+
+	e1 = a*(a+b);
+	e2 = pow(pow(e1, -1), -1);
+
+	if (e2.has(a*b)) {
+		clog << "double reciprocal expanded where it should not\n";
+		++result;
+	}
+
 	return result;
 }