header raster SifFile update_checksums updateChecksums verify_checksums verifyChecksums write writeAll ~SifFile

verify_checksums() void verify_checksums ( ) const Compute the HDU and data checksums and compare them to the values in the header. Exceptions ChecksumError if checksums values in header are missing or incorrect In case of error, a ChecksumError is thrown. The checksum records CHECKSUM and DATASUM can be missing or invalid. To get details on the error, ask the ChecksumError object itself: try { hdu.verify_checksums(); } catch (ChecksumError& e) { if (e.data == ChecksumError::Status::Missing) { // ... } } See also update_checksums()