From 60a092fa50e36a4843c3b441557d810a828fc333 Mon Sep 17 00:00:00 2001
From: Michael Davidsaver <mdavidsaver@gmail.com>
Date: Mon, 16 Dec 2019 10:28:27 -0800
Subject: [PATCH] posix/epicsMath.h

Include "<cmath>" for c++11 and pull in
non-namespace versions of isnan() and friends.
---
 src/libCom/osi/os/posix/epicsMath.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/libCom/osi/os/posix/epicsMath.h b/src/libCom/osi/os/posix/epicsMath.h
index 13f25e520..a8e9b815f 100644
--- a/src/libCom/osi/os/posix/epicsMath.h
+++ b/src/libCom/osi/os/posix/epicsMath.h
@@ -15,12 +15,14 @@
 
 #ifdef __cplusplus
 
+#if __cplusplus>=201103L
 #include <cmath>
 
 using std::isfinite;
 using std::isinf;
 using std::isnan;
 using std::isnormal;
+#endif
 
 extern "C" {
 #endif