From: Taneli Mielikainen <taneli.mielikainen@nokia.com>
Date: Sat, 3 Aug 2013 21:21:58 +0000 (+0300)
Subject: fixing problem that isinf(-Inf) can be 1 or -1
X-Git-Tag: json-c-0.12-20140410~33^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F93%2Fhead;p=thirdparty%2Fjson-c.git

fixing problem that isinf(-Inf) can be 1 or -1
---

diff --git a/json_object.c b/json_object.c
index e12c4407..b63faa48 100644
--- a/json_object.c
+++ b/json_object.c
@@ -575,10 +575,11 @@ static int json_object_double_to_json_string(struct json_object* jso,
      how to handle these cases as strings */
   if(isnan(jso->o.c_double))
     size = snprintf(buf, 128, "NaN");
-  else if(isinf(jso->o.c_double) == 1)
-    size = snprintf(buf, 128, "Infinity");
-  else if(isinf(jso->o.c_double) == -1)
-    size = snprintf(buf, 128, "-Infinity");
+  else if(isinf(jso->o.c_double))
+    if(jso->o.c_double > 0)
+      size = snprintf(buf, 128, "Infinity");
+    else
+      size = snprintf(buf, 128, "-Infinity");
   else
     size = snprintf(buf, 128, "%f", jso->o.c_double);