replace math_graphics with glm version 1.0.3

libs/glm/test/gtx/gtx_functions.cpp

@@ -0,0 +1,37 @@
+#define GLM_ENABLE_EXPERIMENTAL
+#include <glm/gtx/functions.hpp>
+#include <glm/ext/vector_float2.hpp>
+#include <vector>
+
+static int test_gauss_1d()
+{
+	int Error = 0;
+
+	std::vector<float> Result(20);
+	for(std::size_t i = 0, n = Result.size(); i < n; ++i)
+		Result[i] = glm::gauss(static_cast<float>(i) * 0.1f, 0.0f, 1.0f);
+
+	return Error;
+}
+
+static int test_gauss_2d()
+{
+	int Error = 0;
+
+	std::vector<float> Result(20);
+	for(std::size_t i = 0, n = Result.size(); i < n; ++i)
+		Result[i] = glm::gauss(glm::vec2(static_cast<float>(i)) * 0.1f, glm::vec2(0.0f), glm::vec2(1.0f));
+
+	return Error;
+}
+
+int main()
+{
+	int Error = 0;
+
+	Error += test_gauss_1d();
+	Error += test_gauss_2d();
+
+	return Error;
+}
+