Tiny optimization

PerfectNumbers.Core/ULongExtensions.cs

@@ -85,11 +85,8 @@ public static class ULongExtensions
 	}
 
 	[MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static ulong Mod10(this ulong value)
-        {
-                ulong mod5 = value % 5UL;
-                return (value & 1UL) == 0UL
-                        ? mod5 switch
+	public static ulong Mod10(this ulong value) => (value & 1UL) == 0UL
+			? (value % 5UL) switch
 			{
 				0UL => 0UL,
 				1UL => 6UL,
@@ -97,7 +94,7 @@ public static class ULongExtensions
 				3UL => 8UL,
 				_ => 4UL,
 			}
-                        : mod5 switch
+			: (value % 5UL) switch
 			{
 				0UL => 5UL,
 				1UL => 1UL,
@@ -105,7 +102,6 @@ public static class ULongExtensions
 				3UL => 3UL,
 				_ => 9UL,
 			};
-        }
 
 	[MethodImpl(MethodImplOptions.AggressiveInlining)]
 	public static ulong Mod128(this ulong value) => value & 127UL;