mount_image.c: add fallback definitions of RENAME_* constants

[wimlib] / include / wimlib / lz_hash.h

diff --git a/include/wimlib/lz_hash.h b/include/wimlib/lz_hash.h
deleted file mode 100644 (file)
index dbab589..0000000
--- a/include/wimlib/lz_hash.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * lz_hash.h
- *
- * Hashing for Lempel-Ziv matchfinding.
- *
- * Author:     Eric Biggers
- * Year:       2014, 2015
- *
- * The author dedicates this file to the public domain.
- * You can do whatever you want with this file.
- */
-
-#ifndef _WIMLIB_LZ_HASH_H
-#define _WIMLIB_LZ_HASH_H
-
-#include "wimlib/unaligned.h"
-
-/* Constant for the multiplicative hash function.  */
-#define LZ_HASH_MULTIPLIER 0x1E35A7BD
-
-static inline u32
-loaded_u32_to_u24(u32 v)
-{
-       if (CPU_IS_LITTLE_ENDIAN)
-               return v & 0xFFFFFF;
-       else
-               return v >> 8;
-}
-
-static inline u32
-load_u24_unaligned(const u8 *p)
-{
-       if (UNALIGNED_ACCESS_IS_FAST)
-               return loaded_u32_to_u24(load_u32_unaligned(p));
-       else
-               return ((u32)p[0] << 0) | ((u32)p[1] << 8) | ((u32)p[2] << 16);
-}
-
-static inline u32
-lz_hash(u32 str, unsigned num_bits)
-{
-       return (u32)(str * LZ_HASH_MULTIPLIER) >> (32 - num_bits);
-}
-
-/*
- * Hash the next 3-byte sequence in the window, producing a hash of length
- * 'num_bits' bits.  At least LZ_HASH_REQUIRED_NBYTES must be available at 'p';
- * this might be 4 bytes rather than 3 because an unaligned load is faster on
- * some architectures.
- */
-static inline u32
-lz_hash_3_bytes(const u8 *p, unsigned num_bits)
-{
-       return lz_hash(load_u24_unaligned(p), num_bits);
-}
-
-/* Number of bytes the hash function actually requires be available, due to the
- * possibility of an unaligned load.  */
-#define LZ_HASH_REQUIRED_NBYTES (UNALIGNED_ACCESS_IS_FAST ? 4 : 3)
-
-#endif /* _WIMLIB_LZ_HASH_H */