Keep only base/extractor.[cc|h].

third_party/lzma/v4_65/files/CS/7zip/Compress/RangeCoder/RangeCoderBit.cs

Index: third_party/lzma/v4_65/files/CS/7zip/Compress/RangeCoder/RangeCoderBit.cs
diff --git a/third_party/lzma/v4_65/files/CS/7zip/Compress/RangeCoder/RangeCoderBit.cs b/third_party/lzma/v4_65/files/CS/7zip/Compress/RangeCoder/RangeCoderBit.cs
deleted file mode 100644
index 4f0346d179aef3aaa16cdbc3130f67017ad90d6c..0000000000000000000000000000000000000000
--- a/third_party/lzma/v4_65/files/CS/7zip/Compress/RangeCoder/RangeCoderBit.cs
+++ /dev/null
@@ -1,117 +0,0 @@
-using System;
-
-namespace SevenZip.Compression.RangeCoder
-{
-	struct BitEncoder
-	{
-		public const int kNumBitModelTotalBits = 11;
-		public const uint kBitModelTotal = (1 << kNumBitModelTotalBits);
-		const int kNumMoveBits = 5;
-		const int kNumMoveReducingBits = 2;
-		public const int kNumBitPriceShiftBits = 6;
-
-		uint Prob;
-
-		public void Init() { Prob = kBitModelTotal >> 1; }
-
-		public void UpdateModel(uint symbol)
-		{
-			if (symbol == 0)
-				Prob += (kBitModelTotal - Prob) >> kNumMoveBits;
-			else
-				Prob -= (Prob) >> kNumMoveBits;
-		}
-
-		public void Encode(Encoder encoder, uint symbol)
-		{
-			// encoder.EncodeBit(Prob, kNumBitModelTotalBits, symbol);
-			// UpdateModel(symbol);
-			uint newBound = (encoder.Range >> kNumBitModelTotalBits) * Prob;
-			if (symbol == 0)
-			{
-				encoder.Range = newBound;
-				Prob += (kBitModelTotal - Prob) >> kNumMoveBits;
-			}
-			else
-			{
-				encoder.Low += newBound;
-				encoder.Range -= newBound;
-				Prob -= (Prob) >> kNumMoveBits;
-			}
-			if (encoder.Range < Encoder.kTopValue)
-			{
-				encoder.Range <<= 8;
-				encoder.ShiftLow();
-			}
-		}
-
-		private static UInt32[] ProbPrices = new UInt32[kBitModelTotal >> kNumMoveReducingBits];
-
-		static BitEncoder()
-		{
-			const int kNumBits = (kNumBitModelTotalBits - kNumMoveReducingBits);
-			for (int i = kNumBits - 1; i >= 0; i--)
-			{
-				UInt32 start = (UInt32)1 << (kNumBits - i - 1);
-				UInt32 end = (UInt32)1 << (kNumBits - i);
-				for (UInt32 j = start; j < end; j++)
-					ProbPrices[j] = ((UInt32)i << kNumBitPriceShiftBits) +
-						(((end - j) << kNumBitPriceShiftBits) >> (kNumBits - i - 1));
-			}
-		}
-
-		public uint GetPrice(uint symbol)
-		{
-			return ProbPrices[(((Prob - symbol) ^ ((-(int)symbol))) & (kBitModelTotal - 1)) >> kNumMoveReducingBits];
-		}
-	  public uint GetPrice0() { return ProbPrices[Prob >> kNumMoveReducingBits]; }
-		public uint GetPrice1() { return ProbPrices[(kBitModelTotal - Prob) >> kNumMoveReducingBits]; }
-	}
-
-	struct BitDecoder
-	{
-		public const int kNumBitModelTotalBits = 11;
-		public const uint kBitModelTotal = (1 << kNumBitModelTotalBits);
-		const int kNumMoveBits = 5;
-
-		uint Prob;
-
-		public void UpdateModel(int numMoveBits, uint symbol)
-		{
-			if (symbol == 0)
-				Prob += (kBitModelTotal - Prob) >> numMoveBits;
-			else
-				Prob -= (Prob) >> numMoveBits;
-		}
-
-		public void Init() { Prob = kBitModelTotal >> 1; }
-
-		public uint Decode(RangeCoder.Decoder rangeDecoder)
-		{
-			uint newBound = (uint)(rangeDecoder.Range >> kNumBitModelTotalBits) * (uint)Prob;
-			if (rangeDecoder.Code < newBound)
-			{
-				rangeDecoder.Range = newBound;
-				Prob += (kBitModelTotal - Prob) >> kNumMoveBits;
-				if (rangeDecoder.Range < Decoder.kTopValue)
-				{
-					rangeDecoder.Code = (rangeDecoder.Code << 8) | (byte)rangeDecoder.Stream.ReadByte();
-					rangeDecoder.Range <<= 8;
-				}
-				return 0;
-			}
-			else
-			{
-				rangeDecoder.Range -= newBound;
-				rangeDecoder.Code -= newBound;
-				Prob -= (Prob) >> kNumMoveBits;
-				if (rangeDecoder.Range < Decoder.kTopValue)
-				{
-					rangeDecoder.Code = (rangeDecoder.Code << 8) | (byte)rangeDecoder.Stream.ReadByte();
-					rangeDecoder.Range <<= 8;
-				}
-				return 1;
-			}
-		}
-	}
-}