1 files changed, 21 insertions, 0 deletions
diff --git a/hostTools/lzma/compress/AriBitCoder.cpp b/hostTools/lzma/compress/AriBitCoder.cpp
new file mode 100644
index 0000000..ade1888
--- /dev/null
+++ b/hostTools/lzma/compress/AriBitCoder.cpp
@@ -0,0 +1,21 @@
+#include "AriBitCoder.h"
+#include "AriPrice.h"
+
+#include <cmath>
+
+namespace NCompression {
+namespace NArithmetic {
+
+static const double kDummyMultMid = (1.0 / kBitPrice) / 2;
+
+CPriceTables::CPriceTables()
+{
+  double aLn2 = log(2);
+  double aLnAll = log(kBitModelTotal >> kNumMoveReducingBits);
+  for(UINT32 i = 1; i < (kBitModelTotal >> kNumMoveReducingBits) - 1; i++)
+    m_StatePrices[i] = UINT32((fabs(aLnAll - log(i)) / aLn2 + kDummyMultMid) * kBitPrice);
+}
+
+CPriceTables g_PriceTables;
+
+}}