More main progress; tons of headers & stuff

Former-commit-id: a6e365791b

include/rstl/math.hpp

@@ -0,0 +1,17 @@
+#ifndef _RSTL_MATH_HPP
+#define _RSTL_MATH_HPP
+
+#include "types.h"
+
+namespace rstl {
+template < typename T >
+static inline const T& max_val(const T& a, const T& b) {
+  return a > b ? a : b;
+}
+template < typename T >
+static inline const T& min_val(const T& a, const T& b) {
+  return a < b ? a : b;
+}
+} // namespace rstl
+
+#endif