diff options
Diffstat (limited to 'src/include/port/pg_bitutils.h')
| -rw-r--r-- | src/include/port/pg_bitutils.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/include/port/pg_bitutils.h b/src/include/port/pg_bitutils.h index 5197926696f..d1544834a6b 100644 --- a/src/include/port/pg_bitutils.h +++ b/src/include/port/pg_bitutils.h @@ -136,4 +136,13 @@ extern int (*pg_popcount64) (uint64 word); /* Count the number of one-bits in a byte array */ extern uint64 pg_popcount(const char *buf, int bytes); +/* + * Rotate the bits of "word" to the right by n bits. + */ +static inline uint32 +pg_rotate_right32(uint32 word, int n) +{ + return (word >> n) | (word << (sizeof(word) * BITS_PER_BYTE - n)); +} + #endif /* PG_BITUTILS_H */ |