Intel® Fortran Compiler Classic and Intel® Fortran Compiler Developer Guide and Reference

ID 767251
Date 11/07/2023
Public

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Record Length

Use the RECL specifier to specify the record length.

The units used for specifying record length depend on the form of the data:

  • Formatted files (FORM= 'FORMATTED'): Specify the record length in bytes.

  • Unformatted files (FORM= 'UNFORMATTED'): Specify the record length in 4-byte units, unless you specify the assume byterecl compiler option to request 1-byte units.

For all but variable-length sequential records on 64-bit addressable systems, the maximum record length is 2.147 billion bytes (2,147,483,647 minus the bytes for record overhead). For variable-length sequential records on 64-bit addressable systems, the theoretical maximum record length is about 17,000 gigabytes. When considering very large record sizes, also consider limiting factors such as system virtual memory.

NOTE:

The RECL specifier is ignored for stream access.