Available in all subroutines.
Returns a CRC-32b digest for the string
s. CRC-32b is not a cryptographic
hash and is typically used as a fast error-detecting code for detecting
changes in raw data. CRC-32b is a different algorithm than CRC-32 and is not
likely to return the same results given the same input string.
declare local var.crc32b STRING;set var.crc32b = digest.hash_crc32b("123456789");# var.crc32b is now "2639f4cb"
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