bitwise: add explicit accessor get

2019-02-03 14:16:58 +11:00 · 2019-02-03 14:16:58 +11:00 · 5218fa8165
commit 5218fa8165
parent 5d76fb7792
1 changed files with 6 additions and 5 deletions
--- a/bitwise.hpp
+++ b/bitwise.hpp
@ -153,15 +153,16 @@ namespace cruft {
        static_assert (SizeV > 0);
        static_assert (OffsetV + SizeV <= sizeof (ValueT) * 8);

-        decltype(auto)
-        operator+ () const { return +value; }
-
-        operator auto() const
+        constexpr ValueT get (void) const
        {
-            auto const MASK = (1u << SizeV) - 1u;
+            auto const MASK = ~(~0u << SizeV);
            return (value >> OffsetV) & MASK;
        }

+        operator auto() const { return get (); }
+
+        decltype(auto) operator+ () const { return +get (); }
+
        ValueT value;
    };