Constified and shuffled by Floessie #4999

I added the missing "(Unchanged)" mode for Batch Edit,
which is currently broken #5002.

rtengine/rt_math.h

@@ -56,6 +56,13 @@ constexpr const T& min(const T& a, const T& b)
     return b < a ? b : a;
 }
 
+template<>
+constexpr const float& min(const float& a, const float& b)
+{
+    // For consistency reasons we return b instead of a if a == b or a == NaN
+    return a < b ? a : b;
+}
+
 template<typename T, typename... ARGS>
 constexpr const T& min(const T& a, const T& b, const ARGS&... args)
 {
@@ -74,6 +81,13 @@ constexpr const T& max(const T& a, const T& b)
     return a < b ? b : a;
 }
 
+template<>
+constexpr const float& max(const float& a, const float& b)
+{
+    // For consistency reasons we return b instead of a if a == b or a == NaN
+    return b < a ? a : b;
+}
+
 template<typename T, typename... ARGS>
 constexpr const T& max(const T& a, const T& b, const ARGS&... args)
 {