From 5485adacb9b407d8cbcf6ffbb6e41a6690f9025b Mon Sep 17 00:00:00 2001
From: Michael Davidsaver <mdavidsaver@gmail.com>
Date: Fri, 15 Apr 2022 11:39:50 -0700
Subject: [PATCH] make epicsNAN and epicsINF constants really constant

---
 modules/libcom/src/osi/epicsMath.cpp              | 4 ++--
 modules/libcom/src/osi/os/Darwin/epicsMath.h      | 4 ++--
 modules/libcom/src/osi/os/RTEMS-score/epicsMath.h | 4 ++--
 modules/libcom/src/osi/os/WIN32/epicsMath.h       | 4 ++--
 modules/libcom/src/osi/os/iOS/epicsMath.h         | 4 ++--
 modules/libcom/src/osi/os/posix/epicsMath.h       | 4 ++--
 modules/libcom/src/osi/os/solaris/epicsMath.h     | 4 ++--
 modules/libcom/src/osi/os/vxWorks/epicsMath.h     | 4 ++--
 8 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/modules/libcom/src/osi/epicsMath.cpp b/modules/libcom/src/osi/epicsMath.cpp
index 7835420c6..2e3f22bbe 100644
--- a/modules/libcom/src/osi/epicsMath.cpp
+++ b/modules/libcom/src/osi/epicsMath.cpp
@@ -33,8 +33,8 @@ static float makeINF ( void )
 #endif
 
 extern "C" {
-float epicsNAN = NAN;
-float epicsINF = INFINITY;
+const float epicsNAN = NAN;
+const float epicsINF = INFINITY;
 }
 
 #ifdef _MSC_VER
diff --git a/modules/libcom/src/osi/os/Darwin/epicsMath.h b/modules/libcom/src/osi/os/Darwin/epicsMath.h
index 361884a67..75af13bbe 100644
--- a/modules/libcom/src/osi/os/Darwin/epicsMath.h
+++ b/modules/libcom/src/osi/os/Darwin/epicsMath.h
@@ -20,8 +20,8 @@
 extern "C" {
 #endif
 
-LIBCOM_API extern float epicsNAN;
-LIBCOM_API extern float epicsINF;
+LIBCOM_API extern const float epicsNAN;
+LIBCOM_API extern const float epicsINF;
 
 #ifdef __cplusplus
 }
diff --git a/modules/libcom/src/osi/os/RTEMS-score/epicsMath.h b/modules/libcom/src/osi/os/RTEMS-score/epicsMath.h
index 4f18485d9..8b7d49ac2 100644
--- a/modules/libcom/src/osi/os/RTEMS-score/epicsMath.h
+++ b/modules/libcom/src/osi/os/RTEMS-score/epicsMath.h
@@ -19,8 +19,8 @@
 extern "C" {
 #endif
 
-LIBCOM_API extern float epicsNAN;
-LIBCOM_API extern float epicsINF;
+LIBCOM_API extern const float epicsNAN;
+LIBCOM_API extern const float epicsINF;
 
 #ifdef __cplusplus
 }
diff --git a/modules/libcom/src/osi/os/WIN32/epicsMath.h b/modules/libcom/src/osi/os/WIN32/epicsMath.h
index 133b02f00..883cd9b0b 100644
--- a/modules/libcom/src/osi/os/WIN32/epicsMath.h
+++ b/modules/libcom/src/osi/os/WIN32/epicsMath.h
@@ -31,8 +31,8 @@
 extern "C" {
 #endif
 
-LIBCOM_API extern float epicsNAN;
-LIBCOM_API extern float epicsINF;
+LIBCOM_API extern const float epicsNAN;
+LIBCOM_API extern const float epicsINF;
 
 #ifdef __cplusplus
 }
diff --git a/modules/libcom/src/osi/os/iOS/epicsMath.h b/modules/libcom/src/osi/os/iOS/epicsMath.h
index 9d8852cb6..71c308d77 100644
--- a/modules/libcom/src/osi/os/iOS/epicsMath.h
+++ b/modules/libcom/src/osi/os/iOS/epicsMath.h
@@ -18,8 +18,8 @@
 extern "C" {
 #endif
 
-LIBCOM_API extern float epicsNAN;
-LIBCOM_API extern float epicsINF;
+LIBCOM_API extern const float epicsNAN;
+LIBCOM_API extern const float epicsINF;
 
 #ifdef __cplusplus
 }
diff --git a/modules/libcom/src/osi/os/posix/epicsMath.h b/modules/libcom/src/osi/os/posix/epicsMath.h
index 7b5810437..9a45d3556 100644
--- a/modules/libcom/src/osi/os/posix/epicsMath.h
+++ b/modules/libcom/src/osi/os/posix/epicsMath.h
@@ -35,8 +35,8 @@ extern "C" {
 #  define finite(x) isfinite((double)(x))
 #endif
 
-LIBCOM_API extern float epicsNAN;
-LIBCOM_API extern float epicsINF;
+LIBCOM_API extern const float epicsNAN;
+LIBCOM_API extern const float epicsINF;
 
 #ifdef __cplusplus
 }
diff --git a/modules/libcom/src/osi/os/solaris/epicsMath.h b/modules/libcom/src/osi/os/solaris/epicsMath.h
index cd52b158b..fde697842 100644
--- a/modules/libcom/src/osi/os/solaris/epicsMath.h
+++ b/modules/libcom/src/osi/os/solaris/epicsMath.h
@@ -26,8 +26,8 @@
 extern "C" {
 #endif
 
-LIBCOM_API extern float epicsNAN;
-LIBCOM_API extern float epicsINF;
+LIBCOM_API extern const float epicsNAN;
+LIBCOM_API extern const float epicsINF;
 
 #ifdef __cplusplus
 }
diff --git a/modules/libcom/src/osi/os/vxWorks/epicsMath.h b/modules/libcom/src/osi/os/vxWorks/epicsMath.h
index 83453558f..97e4a8d29 100644
--- a/modules/libcom/src/osi/os/vxWorks/epicsMath.h
+++ b/modules/libcom/src/osi/os/vxWorks/epicsMath.h
@@ -30,8 +30,8 @@
 extern "C" {
 #endif
 
-LIBCOM_API extern float epicsNAN;
-LIBCOM_API extern float epicsINF;
+LIBCOM_API extern const float epicsNAN;
+LIBCOM_API extern const float epicsINF;
 
 #ifdef __cplusplus
 }