1 files changed, 26 insertions, 0 deletions
diff --git a/src/libs/7zip/win/CPP/7zip/Compress/BZip2Crc.cpp b/src/libs/7zip/win/CPP/7zip/Compress/BZip2Crc.cpp
new file mode 100644
index 000000000..4e4741f40
--- /dev/null
+++ b/src/libs/7zip/win/CPP/7zip/Compress/BZip2Crc.cpp
@@ -0,0 +1,26 @@
+// BZip2Crc.cpp
+
+#include "StdAfx.h"
+
+#include "BZip2Crc.h"
+
+UInt32 CBZip2Crc::Table[256];
+
+static const UInt32 kBZip2CrcPoly = 0x04c11db7;  /* AUTODIN II, Ethernet, & FDDI */
+
+void CBZip2Crc::InitTable()
+{
+  for (UInt32 i = 0; i < 256; i++)
+  {
+    UInt32 r = (i << 24);
+    for (int j = 8; j > 0; j--)
+      r = (r & 0x80000000) ? ((r << 1) ^ kBZip2CrcPoly) : (r << 1);
+    Table[i] = r;
+  }
+}
+
+class CBZip2CrcTableInit
+{
+public:
+  CBZip2CrcTableInit() { CBZip2Crc::InitTable(); }
+} g_BZip2CrcTableInit;