Visible to Intel only — GUID: GUID-31A35D67-EC37-484C-AB88-AA4B17401F1D
Visible to Intel only — GUID: GUID-31A35D67-EC37-484C-AB88-AA4B17401F1D
OPEN Statement Specifiers
The OPEN statement connects an external file to a unit, creates a new file and connects it to a unit, creates a preconnected file, or changes certain properties of a connection. For more information, see OPEN.
The following table summarizes details about the OPEN statement specifiers and it contains links to their descriptions:
Specifier |
Values |
Function |
Default |
---|---|---|---|
'DIRECT' 'SEQUENTIAL' 'STREAM' 'APPEND' |
Access mode |
'SEQUENTIAL' |
|
ACTION (or MODE) |
'READ' 'WRITE' 'READWRITE' |
File access |
'READWRITE' |
A scalar integer variable |
Next direct access record |
No default |
|
'YES' 'NO' |
Asynchronous I/O |
'NO' |
|
'NULL' 'ZERO' |
Interpretation of blanks |
'NULL' |
|
A scalar numeric expression |
Physical I/O transfer size |
131,072 bytes |
|
A scalar numeric expression |
Number of I/O buffers |
One |
|
'YES' 'NO' |
Buffering for WRITE operations; buffering for READ operations on variable length, unformatted, input records |
'NO' Note: The default is also 'NO' when reading variable length, unformatted records whose length exceeds that of the block size specified for the file. |
|
'FORTRAN' 'LIST' 'NONE' |
Print control |
Formatted: 'LIST' Note: If you specify compiler option vms, and the unit is connected to a terminal, the default is 'FORTRAN'. Unformatted: 'NONE' |
|
'LITTLE_ENDIAN' 'BIG_ENDIAN' 'CRAY' 'FDX' 'FGX' 'IBM' 'VAXD' 'VAXG' 'NATIVE' |
Numeric format specification |
'NATIVE' |
|
'COMMA' 'POINT' |
Decimal edit mode |
'POINT' |
|
A scalar default character expression |
Default file pathname |
Current working directory |
|
'APOSTROPHE' 'QUOTE' 'NONE' |
Delimiter for character constants |
'NONE' |
|
DISPOSE (or DISP) |
'KEEP' or 'SAVE' 'DELETE' 'PRINT' 'PRINT/DELETE' 'SUBMIT' 'SUBMIT/DELETE' |
File disposition at close |
'KEEP' |
'UTF-8' 'DEFAULT' |
Encoding form for a file |
'DEFAULT' |
|
A statement label |
Error transfer control |
No default |
|
FILE (or NAME) |
A scalar default character expression |
File pathname (file name) |
fort.n, where n is the unit number. |
'FORMATTED' 'UNFORMATTED' 'BINARY' |
Format type |
Depends on ACCESS setting |
|
.TRUE. .FALSE. |
Active window in QuickWin application |
.TRUE. Note: If unit '*' is specified, the default is .FALSE.; otherwise, the default is .TRUE.. |
|
A scalar integer variable |
I/O status |
No default |
|
A scalar numeric expression |
Direct access record limit |
No limit |
|
A scalar integer variable |
Returns automatically chosen, unused, unit number |
No default |
|
No value |
File sharing disallowed |
Linux: SHARED Windows: Not shared |
|
'SEQUENTIAL' 'RELATIVE' |
File organization |
'SEQUENTIAL' |
|
'YES' 'NO' |
Record padding |
'YES' |
|
'ASIS' 'REWIND' 'APPEND' |
File positioning |
'ASIS' |
|
No value |
Write protection |
No default |
|
(or RECORDSIZE) |
A scalar numeric expression |
Record length |
Depends on RECORDTYPE,ORGANIZATION, and FORM settings Note: On Linux* systems, the default depends only on the FORM setting. |
'FIXED' 'VARIABLE' 'SEGMENTED' 'STREAM' 'STREAM_CR' 'STREAM_LF' |
Record type |
Depends on ORGANIZATION, CARRIAGECONTROL, ACCESS, and FORM settings |
|
'UP' 'DOWN' 'ZERO' 'NEAREST' 'COMPATIBLE' 'PROCESSOR_DEFINED' |
Rounding mode |
'PROCESSOR_DEFINED' - this corresponds to 'NEAREST' as in the ISO/IEC/IEEE 60559:2011 standard specification for roundTiesToEven |
|
'DENYRW' 'DENYWR' 'DENYRD' 'DENYNONE' |
File locking |
'DENYWR' Note: The default differs under certain conditions (see SHARE Specifier). Other notes:
|
|
No value |
File sharing allowed |
Linux*: SHARED Windows: Not shared |
|
'PLUS' 'SUPPRESS' 'PROCESSOR_DEFINED' |
Plus sign mode |
'PROCESSOR_DEFINED' |
|
STATUS (or TYPE) |
'OLD' 'NEW' 'SCRATCH' 'REPLACE' 'UNKNOWN' |
File status at open |
'UNKNOWN' Note: The default differs under certain conditions (see STATUS Specifier). |
A scalar default character expression |
Title for child window in a QuickWin application |
No default |
|
A scalar numeric expression |
Logical unit number |
No default; an io-unit must be specified. |
|
An external function |
User program option |
No default |