From 0990ac4583587860af7b874b7834884ae0aa0250 Mon Sep 17 00:00:00 2001
From: Christophe Riccio <g.truc.creation@gmail.com>
Date: Sun, 6 Mar 2011 13:39:19 +0000
Subject: [PATCH] Added ULP base function

---
 glm/gtx/ulp.hpp |  2 +-
 glm/gtx/ulp.inl | 43 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 44 insertions(+), 1 deletion(-)

diff --git a/glm/gtx/ulp.hpp b/glm/gtx/ulp.hpp
index b15f08cf..18ce2f53 100644
--- a/glm/gtx/ulp.hpp
+++ b/glm/gtx/ulp.hpp
@@ -42,7 +42,7 @@ namespace glm
 	}//namespace gtx
 }//namespace glm
 
-#include "spline.inl"
+#include "ulp.inl"
 
 namespace glm{using namespace gtx::spline;}
 
diff --git a/glm/gtx/ulp.inl b/glm/gtx/ulp.inl
index e69de29b..253f5b4e 100644
--- a/glm/gtx/ulp.inl
+++ b/glm/gtx/ulp.inl
@@ -0,0 +1,43 @@
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// OpenGL Mathematics Copyright (c) 2005 - 2011 G-Truc Creation (www.g-truc.net)
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// Created : 2011-03-07
+// Updated : 2011-03-07
+// Licence : This source is under MIT License
+// File    : glm/gtx/ulp.inl
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+#include <cmath>
+
+namespace glm{
+namespace gtx{
+namespace ulp
+{
+	inline std::size_t ulp
+	(
+		double const & a,
+		double const & b
+	)
+	{
+		std::size_t Count = 0;
+		double Temp = a;
+		while((Temp = nextafterf(Temp, b)) != b)
+			++Count;
+		return Count;
+	}
+
+	inline std::size_t ulp
+	(
+		float const & a,
+		float const & b
+	)
+	{
+		std::size_t Count = 0;
+		float Temp = a;
+		while((Temp = nextafterf(Temp, b)) != b)
+			++Count;
+		return Count;
+	}
+}//namespace ulp
+}//namespace gtx
+}//namespace glm