mattbishop

-- crc32c https://tools.ietf.org/html/rfc3385#section-4.1
-- Table-based crc32 (not exactly right algorithm, but a good pattern to follow)
-- https://gist.github.com/cuber/bcf0a3a96fc9a790d96d
-- Google-created CRC table
-- https://github.com/googlearchive/crc32c-java/blob/master/src/com/google/cloud/Crc32c.java
CREATE OR REPLACE FUNCTION update_crc32c(src TEXT,
                                         crc BIGINT DEFAULT 0)
RETURNS BIGINT
LANGUAGE plpgsql IMMUTABLE PARALLEL SAFE AS
$$