Branchless: Introduce ToBool().

2026-08-30 01:51:19 +03:00
parent 72e4803939
commit 7e82f3d01a
3 changed files with 10 additions and 2 deletions
@@ -73,7 +73,7 @@ public:

        return
        {
-            .IsOkay_ = static_cast<bool>(isOkay),
+            .IsOkay_ = Branchless::ToBool(isOkay),
            .PadSize_ = Branchless::Sel<uint8_t>(isOkay, padSize, 0)
        };
    }
@@ -66,7 +66,7 @@ public:

        return
        {
-            .IsOkay_ = static_cast<bool>(isOkay),
+            .IsOkay_ = Branchless::ToBool(isOkay),
            .PadSize_ = Branchless::Sel<uint8_t>(isOkay, padSize, 0)
        };
    }
@@ -82,6 +82,14 @@ struct Branchless

        return (mask & onTrue) | (~mask & onFalse);
    }
+
+    template<typename UInt>
+    static constexpr bool ToBool(UInt mask) noexcept
+    {
+        static_assert(std::is_unsigned_v<UInt>);
+
+        return Sel<UInt>(mask, 1, 0);
+    }
 };

 } // namespace Chaos::Service