Added FisheryLib.Collections.FishTable and Mono.Cecil extension methods

A bit of refactoring has been done too
2023-06-03 20:10:58 +02:00
parent 8fa92f15a6
commit cdf209eb02
72 changed files with 8145 additions and 2098 deletions
@@ -0,0 +1,44 @@
+// Copyright (c) 2023 bradson
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+using System.Runtime.CompilerServices;
+
+namespace FisheryLib.Utility;
+
+public static class FishMath
+{
+	public const double PHI
+		= 1.61803398874989484820458683436563811772030917980576286213544862270526046281890244970720720418939113748475;
+
+	[MethodImpl(MethodImplOptions.AggressiveInlining)]
+	public static int TrailingZeroCount(uint value)
+		=> value == 0
+			? 32
+			: _trailingZeroCountDeBruijn[(int)(((value & unchecked(0 - value)) * 125613361) >> 27)];
+	
+	public static int NextPowerOfTwo(int value)
+	{
+#if NETCORE
+			return 1L << (63 - BitOperations.LeadingZeroCount(value));
+#else
+		value--;
+		value |= value >> 1;
+		value |= value >> 2;
+		value |= value >> 4;
+		value |= value >> 8;
+		value |= value >> 16;
+		value++;
+		return value;
+#endif
+	}
+	
+	private static byte[] _trailingZeroCountDeBruijn
+		= {
+			0, 1, 28, 2, 29, 14, 24, 3, 30, 22,
+			20, 15, 25, 17, 4, 8, 31, 27, 13, 23,
+			21, 19, 16, 7, 26, 12, 18, 6, 11, 5,
+			10, 9
+		};
+}