From: Richard Kreckel <Richard.Kreckel@uni-mainz.de>
Date: Fri, 11 May 2001 14:15:33 +0000 (+0000)
Subject: * comparison operators should return const relationals.
X-Git-Tag: release_0-8-3~9
X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=commitdiff_plain;h=e077e0c72b4dba1f1321024602747fe4f61d443e

* comparison operators should return const relationals.
---

diff --git a/ginac/operators.cpp b/ginac/operators.cpp
index 3a4229ba..00c33a73 100644
--- a/ginac/operators.cpp
+++ b/ginac/operators.cpp
@@ -271,37 +271,37 @@ const numeric operator--(numeric & lh, int)
 
 // binary relational operators ex with ex
 
-relational operator==(const ex & lh, const ex & rh)
+const relational operator==(const ex & lh, const ex & rh)
 {
 	debugmsg("operator==(ex,ex)",LOGLEVEL_OPERATOR);
 	return relational(lh,rh,relational::equal);
 }
 
-relational operator!=(const ex & lh, const ex & rh)
+const relational operator!=(const ex & lh, const ex & rh)
 {
 	debugmsg("operator!=(ex,ex)",LOGLEVEL_OPERATOR);
 	return relational(lh,rh,relational::not_equal);
 }
 
-relational operator<(const ex & lh, const ex & rh)
+const relational operator<(const ex & lh, const ex & rh)
 {
 	debugmsg("operator<(ex,ex)",LOGLEVEL_OPERATOR);
 	return relational(lh,rh,relational::less);
 }
 
-relational operator<=(const ex & lh, const ex & rh)
+const relational operator<=(const ex & lh, const ex & rh)
 {
 	debugmsg("operator<=(ex,ex)",LOGLEVEL_OPERATOR);
 	return relational(lh,rh,relational::less_or_equal);
 }
 
-relational operator>(const ex & lh, const ex & rh)
+const relational operator>(const ex & lh, const ex & rh)
 {
 	debugmsg("operator>(ex,ex)",LOGLEVEL_OPERATOR);
 	return relational(lh,rh,relational::greater);
 }
 
-relational operator>=(const ex & lh, const ex & rh)
+const relational operator>=(const ex & lh, const ex & rh)
 {
 	debugmsg("operator>=(ex,ex)",LOGLEVEL_OPERATOR);
 	return relational(lh,rh,relational::greater_or_equal);
diff --git a/ginac/operators.h b/ginac/operators.h
index b84d38b6..22d89370 100644
--- a/ginac/operators.h
+++ b/ginac/operators.h
@@ -74,12 +74,12 @@ const numeric operator++(numeric & lh, int);
 const numeric operator--(numeric & lh, int);
 
 // binary relational operators ex with ex
-relational operator==(const ex & lh, const ex & rh);
-relational operator!=(const ex & lh, const ex & rh);
-relational operator<(const ex & lh, const ex & rh);
-relational operator<=(const ex & lh, const ex & rh);
-relational operator>(const ex & lh, const ex & rh);
-relational operator>=(const ex & lh, const ex & rh);
+const relational operator==(const ex & lh, const ex & rh);
+const relational operator!=(const ex & lh, const ex & rh);
+const relational operator<(const ex & lh, const ex & rh);
+const relational operator<=(const ex & lh, const ex & rh);
+const relational operator>(const ex & lh, const ex & rh);
+const relational operator>=(const ex & lh, const ex & rh);
 
 // input/output stream operators
 std::ostream & operator<<(std::ostream & os, const ex & e);