From 2eb1af66cbe166968bac871590176b9f01f73b22 Mon Sep 17 00:00:00 2001
From: Andreas Fabri <andreas.fabri@geometryfactory.com>
Date: Thu, 13 Apr 2023 17:16:13 +0100
Subject: [PATCH] Use negate() instead of operator-() and assignment

---
 Number_types/include/CGAL/cpp_float.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Number_types/include/CGAL/cpp_float.h b/Number_types/include/CGAL/cpp_float.h
index 8063ee2dd40..b8f1abe3577 100644
--- a/Number_types/include/CGAL/cpp_float.h
+++ b/Number_types/include/CGAL/cpp_float.h
@@ -167,7 +167,7 @@ public:
     exp = idexp - nbits;
     man = m;
     if(u.s.sig){
-      man = -man;
+      man.backend().negate();
     }
 #ifdef CGAL_CPPF
     assert(rat.sign() == man.sign());