Sync public subset from Flux

include/numerics/exp.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <cmath>
+
+#include "./utils/vector.h"
+#include "./utils/matrix.h"
+
+
+namespace numerics{
+	
+	template <typename T>
+	T exp(const T a){
+		return std::exp(a);
+	}
+
+
+} // namespace numerics
+