From ee5f8766af944355b7e3b43c59aa9454f9ff49b6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20Vondru=C5=A1?= <mosra@centrum.cz>
Date: Wed, 16 Jan 2013 21:53:14 +0100
Subject: [PATCH] Math: make type traits aware of long double.

---
 src/Math/MathTypeTraits.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/Math/MathTypeTraits.h b/src/Math/MathTypeTraits.h
index 385fc8a0e..4ef7c2a4d 100644
--- a/src/Math/MathTypeTraits.h
+++ b/src/Math/MathTypeTraits.h
@@ -32,6 +32,14 @@
 #define DOUBLE_EQUALITY_PRECISION 1.0e-12
 #endif
 
+/**
+@brief Precision when testing long doubles for equality
+@todo some proper value please
+*/
+#ifndef LONG_DOUBLE_EQUALITY_PRECISION
+#define LONG_DOUBLE_EQUALITY_PRECISION 1.0e-18
+#endif
+
 namespace Magnum { namespace Math {
 
 /**
@@ -152,6 +160,11 @@ template<> struct MathTypeTraits<double>: Implementation::MathTypeTraitsFloating
 
     inline constexpr static double epsilon() { return DOUBLE_EQUALITY_PRECISION; }
 };
+template<> struct MathTypeTraits<long double>: Implementation::MathTypeTraitsFloatingPoint<long double> {
+    typedef long double FloatingPointType;
+
+    inline constexpr static long double epsilon() { return LONG_DOUBLE_EQUALITY_PRECISION; }
+};
 #endif
 
 }}