X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=check%2Fexam_indexed.cpp;h=23362a83e79b70c0a4e4b9ddcb6504a04698750c;hp=4d09bdff625303e7badfb2427b9c2dc30e8ee312;hb=a9de0af1ab89fe64f9f159ee6d7ef88158d74e33;hpb=a360ba32232288819c58fbec464666a993e78274

diff --git a/check/exam_indexed.cpp b/check/exam_indexed.cpp
index 4d09bdff..23362a83 100644
--- a/check/exam_indexed.cpp
+++ b/check/exam_indexed.cpp
@@ -148,6 +148,11 @@ static unsigned epsilon_check(void)
 	return result;
 }
 
+DECLARE_FUNCTION_2P(symm_fcn)
+REGISTER_FUNCTION(symm_fcn, set_symmetry(sy_symm(0, 1)));
+DECLARE_FUNCTION_2P(anti_fcn)
+REGISTER_FUNCTION(anti_fcn, set_symmetry(sy_anti(0, 1)));
+
 static unsigned symmetry_check(void)
 {
 	// check symmetric/antisymmetric objects
@@ -190,6 +195,10 @@ static unsigned symmetry_check(void)
 	e = (indexed(A, sy_anti(), i, j, k, l) * (indexed(B, j) * indexed(C, k) + indexed(B, k) * indexed(C, j)) + indexed(B, i, l)).expand();
 	result += check_equal_simplify(e, indexed(B, i, l));
 
+	result += check_equal(symm_fcn(0, 1) + symm_fcn(1, 0), 2*symm_fcn(0, 1));
+	result += check_equal(anti_fcn(0, 1) + anti_fcn(1, 0), 0);
+	result += check_equal(anti_fcn(0, 0), 0);
+
 	return result;
 }