From: James Myatt <james.myatt@tessella.com>
Date: Thu, 5 Feb 2015 15:56:49 +0000 (+0000)
Subject: Define INFINITY and NAN when missing
X-Git-Tag: json-c-0.13-20171207~193^2~8
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=72310c87a519b3530e54b96cd1ceb84e0d385a9c;p=thirdparty%2Fjson-c.git

Define INFINITY and NAN when missing
---

diff --git a/math_compat.h b/math_compat.h
index f40b8faf..baf3eb90 100644
--- a/math_compat.h
+++ b/math_compat.h
@@ -1,7 +1,7 @@
 #ifndef __math_compat_h
 #define __math_compat_h
 
-/* Define isnan and isinf on Windows/MSVC */
+/* Define isnan, isinf, infinity and nan on Windows/MSVC */
 
 #ifndef HAVE_DECL_ISNAN
 # ifdef HAVE_DECL__ISNAN
@@ -17,12 +17,15 @@
 # endif
 #endif
 
-#ifndef HAVE_DECL_NAN
-#error This platform does not have nan()
+#ifndef HAVE_DECL_INFINITY
+#include <float.h>
+#define INFINITY (DBL_MAX + DBL_MAX)
+#define HAVE_DECL_INFINITY
 #endif
 
-#ifndef HAVE_DECL_INFINITY
-#error This platform does not have INFINITY
+#ifndef HAVE_DECL_NAN
+#define NAN (INFINITY - INFINITY)
+#define HAVE_DECL_NAN
 #endif
 
 #endif