Benchmark results and TODOs added / updated

EvenPerfectBitScanner.Benchmarks/Mod7ULongBenchmarks.cs

@@ -8,34 +8,37 @@ namespace EvenPerfectBitScanner.Benchmarks;
 [MemoryDiagnoser]
 public class Mod7ULongBenchmarks
 {
-	[MethodImpl(MethodImplOptions.AggressiveInlining)]
-	public static ulong Mod7(ulong value)
-	{
-		ulong remainder = ((uint)value % 7U) + (((uint)(value >> 32) % 7U) << 2);
-		while (remainder >= 7UL)
-		{
-			remainder -= 7UL;
-		}
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static ulong Mod7(ulong value)
+    {
+        ulong remainder = ((uint)value % 7U) + (((uint)(value >> 32) % 7U) << 2);
+        while (remainder >= 7UL)
+        {
+            remainder -= 7UL;
+        }
 
-		return remainder;
-	}
+        return remainder;
+    }
 
     [Params(7UL, 8191UL, 131071UL, 2147483647UL, ulong.MaxValue - 63UL)]
     public ulong Value { get; set; }
 
-	/// <summary>
-	/// Fastest
-	/// </summary>
-	[Benchmark(Baseline = true)]
+    /// <summary>
+    /// `% 7` baseline; 0.274 ns at value 7, 0.270 ns at 8191, 0.268 ns at 131071, 0.270 ns at 2147483647, and 0.275 ns near ulong.Max.
+    /// </summary>
+    [Benchmark(Baseline = true)]
     public ulong ModuloOperator()
     {
         return Value % 7UL;
     }
 
+    /// <summary>
+    /// Extension helper; 0.433 ns at value 7, 0.443 ns at 8191, 0.436 ns at 131071, 0.438 ns at 2147483647, but 0.684 ns near
+    /// ulong.Max—about 1.6-2.5x slower overall.
+    /// </summary>
     [Benchmark]
     public ulong ExtensionMethod()
     {
         return Mod7(Value);
     }
 }
-