X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=check%2Fexam_misc.cpp;h=3b2ff8eac6679bb9b3271b5ae1b3d599f55655bc;hp=f8a52578c1005b59c758b9ea438a131014dcb872;hb=fcc1f605535081bfcee74dc1a154839e10b807ef;hpb=5fd76b00944f1dbb239b3c1baf69b016b46c1888;ds=inline

diff --git a/check/exam_misc.cpp b/check/exam_misc.cpp
index f8a52578..3b2ff8ea 100644
--- a/check/exam_misc.cpp
+++ b/check/exam_misc.cpp
@@ -72,6 +72,23 @@ static unsigned exam_expand_subs2(void)
 	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;
+	}
+	
+	return result;
+}
+
 unsigned exam_misc(void)
 {
 	unsigned result = 0;
@@ -81,6 +98,7 @@ 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;