From 2400954df2dd218b635d11c427a694d61f9b9544 Mon Sep 17 00:00:00 2001
From: Liam Adams <liam1540@googlemail.com>
Date: Fri, 19 Jul 2019 18:10:29 +0100
Subject: [PATCH 1/2] Add lMaxNorm for computing the max norm.

---
 glm/gtx/norm.hpp | 12 ++++++++++++
 glm/gtx/norm.inl | 12 ++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/glm/gtx/norm.hpp b/glm/gtx/norm.hpp
index cdf60e05..dfaebb7a 100644
--- a/glm/gtx/norm.hpp
+++ b/glm/gtx/norm.hpp
@@ -3,6 +3,7 @@
 ///
 /// @see core (dependence)
 /// @see gtx_quaternion (dependence)
+/// @see gtx_component_wise (dependence)
 ///
 /// @defgroup gtx_norm GLM_GTX_norm
 /// @ingroup gtx
@@ -16,6 +17,7 @@
 // Dependency:
 #include "../geometric.hpp"
 #include "../gtx/quaternion.hpp"
+#include "../gtx/component_wise.hpp"
 
 #if GLM_MESSAGES == GLM_ENABLE && !defined(GLM_EXT_INCLUDED)
 #	ifndef GLM_ENABLE_EXPERIMENTAL
@@ -70,6 +72,16 @@ namespace glm
 	template<typename T, qualifier Q>
 	GLM_FUNC_DECL T lxNorm(vec<3, T, Q> const& x, unsigned int Depth);
 
+	//! Returns the LMax norm between x and y.
+	//! From GLM_GTX_norm extension.
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL T lMaxNorm(vec<3, T, Q> const& x, vec<3, T, Q> const& y);
+
+	//! Returns the LMax norm of v.
+	//! From GLM_GTX_norm extension.
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL T lMaxNorm(vec<3, T, Q> const& x);
+
 	/// @}
 }//namespace glm
 
diff --git a/glm/gtx/norm.inl b/glm/gtx/norm.inl
index c3f468c3..59b79ac2 100644
--- a/glm/gtx/norm.inl
+++ b/glm/gtx/norm.inl
@@ -80,4 +80,16 @@ namespace detail
 		return pow(pow(v.x, T(Depth)) + pow(v.y, T(Depth)) + pow(v.z, T(Depth)), T(1) / T(Depth));
 	}
 
+	template<typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER T lMaxNorm(vec<3, T, Q> const& a, vec<3, T, Q> const& b)
+	{
+		return compMax(abs(b - a));
+	}
+
+	template<typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER T lMaxNorm(vec<3, T, Q> const& v)
+	{
+		return compMax(abs(v));
+	}
+
 }//namespace glm

From a78024d2bfcbf2f2b9e7969c4753ae180917f224 Mon Sep 17 00:00:00 2001
From: Liam Adams <liam1540@googlemail.com>
Date: Fri, 19 Jul 2019 18:11:07 +0100
Subject: [PATCH 2/2] Add testing of lMaxNorm.

---
 test/gtx/gtx_norm.cpp | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/test/gtx/gtx_norm.cpp b/test/gtx/gtx_norm.cpp
index 38cef8c2..5d9e4f32 100644
--- a/test/gtx/gtx_norm.cpp
+++ b/test/gtx/gtx_norm.cpp
@@ -1,9 +1,28 @@
 #define GLM_ENABLE_EXPERIMENTAL
 #include <glm/gtx/norm.hpp>
 
+int test_lMaxNorm()
+{
+	int Error(0);
+	
+	{
+		float norm = glm::lMaxNorm(glm::vec3(-1, -2, -3));
+		Error += glm::epsilonEqual(norm, 3.f, 0.00001f) ? 0 : 1;
+	}
+
+	{
+		float norm = glm::lMaxNorm(glm::vec3(2, 3, 1));
+		Error += glm::epsilonEqual(norm, 3.f, 0.00001f) ? 0 : 1;
+	}
+
+	return Error;
+}
+
 int main()
 {
 	int Error(0);
 
+	Error += test_lMaxNorm();
+
 	return Error;
 }