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1 files changed, 30 insertions, 0 deletions

diff --git a/internal_rewrite/Valve/checksum_crc.h b/internal_rewrite/Valve/checksum_crc.h
new file mode 100644
index 0000000..356de67
--- /dev/null
+++ b/internal_rewrite/Valve/checksum_crc.h
@@ -0,0 +1,30 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: Generic CRC functions
+//
+// $NoKeywords: $
+//=============================================================================//
+#ifndef CHECKSUM_CRC_H
+#define CHECKSUM_CRC_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+typedef unsigned int CRC32_t;
+
+void CRC32_Init( CRC32_t *pulCRC );
+void CRC32_ProcessBuffer( CRC32_t *pulCRC, const void *p, int len );
+void CRC32_Final( CRC32_t *pulCRC );
+CRC32_t	CRC32_GetTableEntry( unsigned int slot );
+
+inline CRC32_t CRC32_ProcessSingleBuffer( const void *p, int len ) {
+	CRC32_t crc;
+
+	CRC32_Init( &crc );
+	CRC32_ProcessBuffer( &crc, p, len );
+	CRC32_Final( &crc );
+
+	return crc;
+}
+
+#endif // CHECKSUM_CRC_H