From 03746e7606dad27ff118876df0f79fd803d0c00e Mon Sep 17 00:00:00 2001
From: Jonathan Turner <probata@hotmail.com>
Date: Mon, 21 Sep 2009 16:50:30 +0000
Subject: [PATCH] Add keywords for NaN and Infinity

---
 include/chaiscript/language/chaiscript_eval.hpp | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/include/chaiscript/language/chaiscript_eval.hpp b/include/chaiscript/language/chaiscript_eval.hpp
index 6cfb749..daf53c1 100644
--- a/include/chaiscript/language/chaiscript_eval.hpp
+++ b/include/chaiscript/language/chaiscript_eval.hpp
@@ -73,6 +73,20 @@ namespace chaiscript
             }
             return node->cached_value;
         }
+        else if (node->text == "Infinity") {
+            //return const_var(false);
+            if (!node->is_cached) {
+                cache_const(ss, node, const_var(std::numeric_limits<double>::infinity()));
+            }
+            return node->cached_value;
+        }
+        else if (node->text == "NaN") {
+            //return const_var(false);
+            if (!node->is_cached) {
+                cache_const(ss, node, const_var(std::numeric_limits<double>::quiet_NaN()));
+            }
+            return node->cached_value;
+        }
         else {
             try {
                 return ss.get_object(node->text);