--mersenne=bydivisor testers and sessions integrated and converted to structs.

PerfectNumbers.Core/Cpu/ByteExtensions.cs

@@ -0,0 +1,111 @@
+using System.Runtime.CompilerServices;
+
+namespace PerfectNumbers.Core.Cpu;
+
+public static class ByteExtensions
+{
+	[MethodImpl(MethodImplOptions.AggressiveInlining)]
+	public static byte AddMod3(this byte value, byte delta)
+	{
+		const int Modulus = 3;
+		int sum = value + delta;
+
+		if (sum >= Modulus)
+		{
+			sum -= Modulus;
+		}
+
+		return (byte)sum;
+	}
+
+
+	[MethodImpl(MethodImplOptions.AggressiveInlining)]
+	public static byte AddMod7(this byte value, byte delta)
+	{
+		const int Modulus = 7;
+		int sum = value + delta;
+
+		if (sum >= Modulus)
+		{
+			sum -= Modulus;
+		}
+
+		return (byte)sum;
+	}
+
+	[MethodImpl(MethodImplOptions.AggressiveInlining)]
+	public static byte AddMod13(this byte value, byte delta)
+	{
+		const int Modulus = 13;
+		int sum = value + delta;
+
+		if (sum >= Modulus)
+		{
+			sum -= Modulus;
+		}
+
+		return (byte)sum;
+	}
+
+	[MethodImpl(MethodImplOptions.AggressiveInlining)]
+	public static byte AddMod17(this byte value, byte delta)
+	{
+		const int Modulus = 17;
+		int sum = value + delta;
+
+		if (sum >= Modulus)
+		{
+			sum -= Modulus;
+		}
+
+		return (byte)sum;
+	}
+
+	[MethodImpl(MethodImplOptions.AggressiveInlining)]
+	public static byte AddMod19(this byte value, byte delta)
+	{
+		const int Modulus = 19;
+		int sum = value + delta;
+
+		if (sum >= Modulus)
+		{
+			sum -= Modulus;
+		}
+
+		return (byte)sum;
+	}
+
+	[MethodImpl(MethodImplOptions.AggressiveInlining)]
+	public static byte AddMod10(this byte value, byte delta)
+	{
+		const int Modulus = 10;
+		int sum = value + delta;
+
+		if (sum >= Modulus)
+		{
+			sum -= Modulus;
+		}
+
+		return (byte)sum;
+	}
+
+	[MethodImpl(MethodImplOptions.AggressiveInlining)]
+	public static byte AddMod11(this byte value, byte delta)
+	{
+		const int Modulus = 11;
+		int sum = value + delta;
+
+		if (sum >= Modulus)
+		{
+			sum -= Modulus;
+		}
+
+		return (byte)sum;
+	}
+
+	[MethodImpl(MethodImplOptions.AggressiveInlining)]
+	public static byte AddMod8(this byte value, byte delta)
+	{
+		return (byte)((value + delta) & 7);
+	}
+}