adding another workaround for arduino

This should get rid of basically all errors caused by stupid C macros. Because of the the unit system should work on the AVR boards. It also causes it to provide std::size_t, std::max and std::abs.

Author: noasakurajin

generic/include/unit_t.hpp

@@ -1,8 +1,32 @@
 #pragma once
 
-#include <cstddef>
-#include <cmath>
-#include <algorithm>
+#if __has_include(<cstddef>)
+    #include <cstddef>
+#else
+    #ifdef abs
+        #undef abs
+    #endif
+    
+    #ifdef max
+        #undef max
+    #endif
+    
+    namespace std{
+        using size_t = unsigned int;
+        
+        template <typename T>
+        T abs(T var){
+            return var > 0 ? var : -var;
+        }
+        
+        template <typename T>
+        T max(T v1, T v2){
+            return v1 > v2 ? v1 : v2;
+        }
+    }
+#endif
+
+
 
 namespace sakurajin{
     namespace unit_system{