diff options
Diffstat (limited to 'src/backend/utils')
| -rw-r--r-- | src/backend/utils/hash/pg_crc.c | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/src/backend/utils/hash/pg_crc.c b/src/backend/utils/hash/pg_crc.c index 3595938dc4f..a85e6171864 100644 --- a/src/backend/utils/hash/pg_crc.c +++ b/src/backend/utils/hash/pg_crc.c @@ -17,9 +17,12 @@ *------------------------------------------------------------------------- */ -#include "c.h" +#include "postgres.h" +#include "port/pg_crc32c.h" +#include "utils/builtins.h" #include "utils/pg_crc.h" +#include "varatt.h" /* * Lookup table for calculating CRC-32 using Sarwate's algorithm. @@ -95,3 +98,33 @@ const uint32 pg_crc32_table[256] = { 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D }; + +/* + * SQL-callable functions + */ + +Datum +crc32_bytea(PG_FUNCTION_ARGS) +{ + bytea *in = PG_GETARG_BYTEA_PP(0); + pg_crc32 crc; + + INIT_TRADITIONAL_CRC32(crc); + COMP_TRADITIONAL_CRC32(crc, VARDATA_ANY(in), VARSIZE_ANY_EXHDR(in)); + FIN_TRADITIONAL_CRC32(crc); + + PG_RETURN_INT64(crc); +} + +Datum +crc32c_bytea(PG_FUNCTION_ARGS) +{ + bytea *in = PG_GETARG_BYTEA_PP(0); + pg_crc32c crc; + + INIT_CRC32C(crc); + COMP_CRC32C(crc, VARDATA_ANY(in), VARSIZE_ANY_EXHDR(in)); + FIN_CRC32C(crc); + + PG_RETURN_INT64(crc); +} |