The ASYNCHRONOUS specifier asks whether asynchronous I/O is in effect. It takes the following form:
ASYNCHRONOUS =
asyn
asyn |
Is a scalar default character variable that is assigned one of the following values:
'NO'
|
If the file or unit is connected and asynchronous input/output is not in effect.
|
'YES'
|
If the file or unit is connected and asynchronous input/output is in effect.
|
'UNKNOWN'
|
If the file or unit is not connected.
|
|