From 1d095e8a63e4617d069a11c56b509dde346abcab Mon Sep 17 00:00:00 2001
From: Andreas Fabri <andreas.fabri@geometryfactory.com>
Date: Wed, 26 Jan 2022 13:12:41 +0000
Subject: [PATCH] Polynomial: Workaround for VC bug when cout << double  while
 rounding up

---
 Polynomial/test/Polynomial/test_polynomial.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Polynomial/test/Polynomial/test_polynomial.h b/Polynomial/test/Polynomial/test_polynomial.h
index a8a07ba92d0..5141ffa239c 100644
--- a/Polynomial/test/Polynomial/test_polynomial.h
+++ b/Polynomial/test/Polynomial/test_polynomial.h
@@ -285,6 +285,13 @@ void division(CGAL::Integral_domain_tag) {
 
 template <class NT>
 void io() {
+
+    // https://github.com/CGAL/cgal/issues/6272#issuecomment-1022005703
+    // VCbug:  Setting the rounding mode influences output of double
+    // The rounding mode is set to CGAL_FE_UPWARD in the test ccp files
+    // in order to test Modular Arithmetic
+    // Without this change which is local to the function  p == q will fail
+    CGAL::Protect_FPU_rounding<true> pfr(CGAL_FE_TONEAREST);
     typedef CGAL::Polynomial<NT> POLY;
 
     {