The RECORDTYPE keyword specifies the format of records in a file: fixed-length records, variable-length records, segmented records, or stream-type variable-length records. It takes the following form:
RECORDTYPE = typ
When you open a file, default record types are as follows:
| File Type | Default Record Type |
|---|---|
| Relative files | 'FIXED' |
| Direct access sequential files | 'FIXED' |
| Formatted sequential access files | 'STREAM_LF' |
| Unformatted sequential access files | 'VARIABLE' |
Within segmented records, a Fortran logical record can be greater
than 65,535 bytes in length. Only use segmented records for
unformatted sequential access to disk or raw magnetic tape files.
In fixed-length record files, if an output statement does not
specify a full record, the record is filled with spaces in a
formatted file and zeros in an unformatted file.
You cannot use an unformatted READ statement to access an
unformatted sequential organization file containing variable-length
records, unless you specify the corresponding RECORDTYPE value in
your OPEN statement.
Files containing segmented records can be accessed only by
unformatted sequential Fortran I/O statements.
For details on record types, see your user manual.