X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=check%2Fexam_indexed.cpp;h=e1ee1eb1c8977e84c6b269acd632247db6073e41;hp=bbbbf4278f388718b29f580549a81f41fea0a441;hb=8a5bcc703e54153669eb60ff4d2c3bd64cd2af0c;hpb=66e09ce332d6945430e8bb5e17277cdfe62e59e2

diff --git a/check/exam_indexed.cpp b/check/exam_indexed.cpp
index bbbbf427..e1ee1eb1 100644
--- a/check/exam_indexed.cpp
+++ b/check/exam_indexed.cpp
@@ -307,6 +307,26 @@ static unsigned spinor_check(void)
 	return result;
 }
 
+static unsigned dummy_check(void)
+{
+	// check dummy index renaming
+
+	unsigned result = 0;
+
+	symbol p("p"), q("q");
+	idx i(symbol("i"), 3), j(symbol("j"), 3), n(symbol("n"), 3);
+	ex e;
+
+	e = indexed(p, i) * indexed(q, i) - indexed(p, j) * indexed(q, j);
+	result += check_equal_simplify(e, 0);
+
+	e = indexed(p, i) * indexed(p, i) * indexed(q, j) * indexed(q, j)
+	  - indexed(p, n) * indexed(p, n) * indexed(q, j) * indexed(q, j);
+	result += check_equal_simplify(e, 0);
+
+	return result;
+}
+
 unsigned exam_indexed(void)
 {
 	unsigned result = 0;
@@ -321,6 +341,7 @@ unsigned exam_indexed(void)
 	result += scalar_product_check();  cout << '.' << flush;
 	result += edyn_check();  cout << '.' << flush;
 	result += spinor_check(); cout << '.' << flush;
+	result += dummy_check(); cout << '.' << flush;
 	
 	if (!result) {
 		cout << " passed " << endl;