Noise: First pass of refactoring

Former-commit-id: 77de49ee01fea466cb97b22771e4c625389fd95c [formerly edce9427bc009c8ea6a6df35d9ce134a83ab985c]
Former-commit-id: 76227519c8be75a45f6f65250a0870c2eb866953

include/Nazara/Math/Algorithm.hpp

@@ -1,3 +1,4 @@
+
 // Copyright (C) 2015 Jérôme Leclercq
 // This file is part of the "Nazara Engine - Mathematics module"
 // For conditions of distribution and use, see copyright notice in Config.hpp
@@ -28,6 +29,10 @@
 #define M_SQRT3 1.7320508075688772935274463
 #endif
 
+#ifndef M_SQRT5
+#define M_SQRT5 2.23606797749979
+#endif
+
 namespace Nz
 {
 	template<typename T> /*constexpr*/ T Approach(T value, T objective, T increment);