as category header index matches read_name read_version readCategory readName readVersion size_in_file type update_checksums update_name update_version updateChecksums updateName updateVersion verify_checksums verifyChecksums

update_checksums() void update_checksums ( ) const Compute and write (or update) the HDU and data checksums. Two checksums are computed: at whole HDU level (keyword CHECKSUM), and at data unit level (keyword DATASUM). See also verify_checksums()