1 files changed, 24 insertions, 0 deletions
diff --git a/src/BitOps/Signedness.php b/src/BitOps/Signedness.php
new file mode 100644
index 0000000..80cd03b
--- /dev/null
+++ b/src/BitOps/Signedness.php
@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Nsfisis\Waddiwasi\BitOps;
+
+enum Signedness
+{
+    case Unsigned;
+    case Signed;
+
+    public static function fromSignBit(int $b): self
+    {
+        return $b === 0 ? self::Unsigned : self::Signed;
+    }
+
+    public function negated(): self
+    {
+        return match ($this) {
+            self::Unsigned => self::Signed,
+            self::Signed => self::Unsigned,
+        };
+    }
+}