Inline single-use modulo helpers

PerfectNumbers.Core/PrimesGenerator.cs

@@ -97,17 +97,23 @@ public static class PrimesGenerator
 		}
 	}
 
-	[MethodImpl(MethodImplOptions.AggressiveInlining)]
-	private static bool IsAllowedForLastOne(uint prime)
-	{
-                uint mod10 = prime % 10U;
-		return mod10 == 1U || mod10 == 3U || mod10 == 9U || prime == 7U || prime == 11U;
-	}
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        private static bool IsAllowedForLastOne(uint prime)
+        {
+                return (prime % 10U) switch
+                {
+                        1U or 3U or 9U => true,
+                        _ => prime == 7U || prime == 11U,
+                };
+        }
 
-	[MethodImpl(MethodImplOptions.AggressiveInlining)]
-	private static bool IsAllowedForLastSeven(uint prime)
-	{
-                uint mod10 = prime % 10U;
-		return mod10 == 3U || mod10 == 7U || mod10 == 9U || prime == 11U;
-	}
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        private static bool IsAllowedForLastSeven(uint prime)
+        {
+                return (prime % 10U) switch
+                {
+                        3U or 7U or 9U => true,
+                        _ => prime == 11U,
+                };
+        }
 }