X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=check%2Fexam_misc.cpp;h=c9872a93284bce8659586a99ba2afc4d52fc9bba;hp=8052bda95804a4948fa8ccba6a2672fe33037050;hb=5136cb28833944aedbd47e1f66cd4a103e6697b1;hpb=af922d5eb36ed70e4a9e3ffaf4c24492cf89a1a6

diff --git a/check/exam_misc.cpp b/check/exam_misc.cpp
index 8052bda9..c9872a93 100644
--- a/check/exam_misc.cpp
+++ b/check/exam_misc.cpp
@@ -3,7 +3,7 @@
  */
 
 /*
- *  GiNaC Copyright (C) 1999-2000 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2001 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
@@ -27,22 +27,19 @@
 static unsigned exam_expand_subs(void)
 {
 	unsigned result = 0;
-	symbol a1("a1");
 	symbol a[VECSIZE];
 	ex e, aux;
 	
-	a[1] = a1;
-	for (unsigned i=0; i<VECSIZE; ++i) {
+	for (unsigned i=0; i<VECSIZE; ++i)
 		e = e + a[i];
-	}
 	
 	// prepare aux so it will swallow anything but a1^2:
 	aux = -e + a[0] + a[1];
 	e = expand(subs(expand(pow(e, 2)), a[0] == aux));
 	
-	if (e != pow(a1,2)) {
+	if (e != pow(a[1],2)) {
 		clog << "Denny Fliegner's quick consistency check erroneously returned "
-			 << e << "." << endl;
+		     << e << "." << endl;
 		++result;
 	}
 	
@@ -65,7 +62,24 @@ static unsigned exam_expand_subs2(void)
 	
 	if (f != 0) {
 		clog << "e = pow(a+b,200).expand(); f = e.subs(a == -b); erroneously returned "
-			 << f << " instead of simplifying to 0." << endl;
+		     << f << " instead of simplifying to 0." << endl;
+		++result;
+	}
+	
+	return result;
+}
+
+static unsigned exam_expand_power(void)
+{
+	unsigned result = 0;
+	symbol x("x"), a("a"), b("b");
+	ex e;
+	
+	e = pow(x,pow(a+b,2)-pow(a,2)-pow(b,2)-a*b*2).expand();
+	
+	if (e != 1) {
+		clog << "e = pow(x,pow(a+b,2)-pow(a,2)-pow(b,2)-a*b*2).expand(); erroneously returned "
+		     << e << " instead of simplifying to 1." << endl;
 		++result;
 	}
 	
@@ -81,6 +95,7 @@ unsigned exam_misc(void)
 	
 	result += exam_expand_subs();  cout << '.' << flush;
 	result += exam_expand_subs2();  cout << '.' << flush;
+	result += exam_expand_power(); cout << '.' << flush;
 	
 	if (!result) {
 		cout << " passed " << endl;