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| author | Sergei Golubchik <serg@mariadb.org> | 2014-10-15 12:59:13 +0200 |
|---|---|---|
| committer | Sergei Golubchik <serg@mariadb.org> | 2014-10-15 12:59:13 +0200 |
| commit | f62c12b405ba7ec80b8e2490856b83c6f5899211 (patch) | |
| tree | 010605c7f145da6ea6ac14b39abc4cf700d619b1 /strings/strings_def.h | |
| parent | f947f73b2b6d2bd246b81a9038224d2a85777520 (diff) | |
| parent | f1afc003eefe0aafd3e070c7453d9e029d8445a8 (diff) | |
| download | mariadb-git-f62c12b405ba7ec80b8e2490856b83c6f5899211.tar.gz | |
Merge 10.0.14 into 10.1
Diffstat (limited to 'strings/strings_def.h')
| -rw-r--r-- | strings/strings_def.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/strings/strings_def.h b/strings/strings_def.h index 6bd8e8f5575..fb280b6bb6b 100644 --- a/strings/strings_def.h +++ b/strings/strings_def.h @@ -100,4 +100,13 @@ static inline const uchar *skip_trailing_space(const uchar *ptr,size_t len) end--; return (end); } + +/* Macros for hashing characters */ + +#define MY_HASH_ADD(A, B, value) \ + do { A^= (((A & 63)+B)*((value)))+ (A << 8); B+=3; } while(0) + +#define MY_HASH_ADD_16(A, B, value) \ + do { MY_HASH_ADD(A, B, ((value) & 0xFF)) ; MY_HASH_ADD(A, B, ((value >>8 ))); } while(0) + #endif |