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Apply a couple of optimizations

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This commit is contained in:
Eric Andersen 2004-01-29 22:33:28 +00:00
parent 242ab83499
commit f88bb72f1f
1 changed files with 5 additions and 3 deletions
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8
libbb/hash_fd.c
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@ -95,9 +95,9 @@
# define SHA1_MASK (SHA1_BLOCK_SIZE - 1)
/* reverse byte order in 32-bit words */
# define ch(x,y,z) (((x) & (y)) ^ (~(x) & (z)))
# define parity(x,y,z) ((x) ^ (y) ^ (z))
# define maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
#define ch(x,y,z) ((z) ^ ((x) & ((y) ^ (z))))
#define parity(x,y,z) ((x) ^ (y) ^ (z))
#define maj(x,y,z) (((x) & (y)) | ((z) & ((x) | (y))))
/* A normal version as set out in the FIPS. This version uses */
/* partial loop unrolling and is optimised for the Pentium 4 */
@ -276,6 +276,8 @@ void sha1_end(unsigned char hval[], sha1_ctx_t *ctx)
/* Handle endian-ness */
# if __BYTE_ORDER == __LITTLE_ENDIAN
# define SWAP(n) (n)
# elif defined(bswap_32)
# define SWAP(n) bswap_32(n)
# else
# define SWAP(n) ((n << 24) | ((n&65280)<<8) | ((n&16711680)>>8) | (n>>24))
# endif