Added float unit tests

test/core/core_type_float.cpp

@@ -9,9 +9,29 @@
 
 #include <glm/glm.hpp>
 
+int test_float_size()
+{
+    return
+        sizeof(glm::float_t) != sizeof(glm::lowp_float) &&
+        sizeof(glm::float_t) != sizeof(glm::mediump_float) && 
+        sizeof(glm::float_t) != sizeof(glm::highp_float);
+}
+
+int test_float_precision()
+{
+    return (
+        sizeof(glm::lowp_float) <= sizeof(glm::mediump_float) && 
+            sizeof(glm::mediump_float) <= sizeof(glm::highp_float)) ? 0 : 1;
+}
+
 int main()
 {
-	return -1;
+    int Error = 0;
+    
+    Error += test_float_size();
+    Error += test_float_precision();
+    
+	return Error;
 }