From 7e82f3d01a3a65501ef802f28b64160848e6fdf4 Mon Sep 17 00:00:00 2001
From: hashlag <hashlag@hashlag.local>
Date: Sun, 30 Aug 2026 01:51:19 +0300
Subject: [PATCH] Branchless: Introduce ToBool().

---
 Chaos/Padding/PadderIso7816.hpp | 2 +-
 Chaos/Padding/PadderPkcs7.hpp   | 2 +-
 Chaos/Service/Branchless.hpp    | 8 ++++++++
 3 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/Chaos/Padding/PadderIso7816.hpp b/Chaos/Padding/PadderIso7816.hpp
index cb1d5dd..c5af640 100644
--- a/Chaos/Padding/PadderIso7816.hpp
+++ b/Chaos/Padding/PadderIso7816.hpp
@@ -73,7 +73,7 @@ public:
 
         return
         {
-            .IsOkay_ = static_cast<bool>(isOkay),
+            .IsOkay_ = Branchless::ToBool(isOkay),
             .PadSize_ = Branchless::Sel<uint8_t>(isOkay, padSize, 0)
         };
     }
diff --git a/Chaos/Padding/PadderPkcs7.hpp b/Chaos/Padding/PadderPkcs7.hpp
index b25f554..325a01f 100644
--- a/Chaos/Padding/PadderPkcs7.hpp
+++ b/Chaos/Padding/PadderPkcs7.hpp
@@ -66,7 +66,7 @@ public:
 
         return
         {
-            .IsOkay_ = static_cast<bool>(isOkay),
+            .IsOkay_ = Branchless::ToBool(isOkay),
             .PadSize_ = Branchless::Sel<uint8_t>(isOkay, padSize, 0)
         };
     }
diff --git a/Chaos/Service/Branchless.hpp b/Chaos/Service/Branchless.hpp
index 9c16fd1..0ff13be 100644
--- a/Chaos/Service/Branchless.hpp
+++ b/Chaos/Service/Branchless.hpp
@@ -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