Manual Reference Pages - wait (7fortran)
NAME
wait(7f) - [IO] statement performs a wait operation for specified pending asynchronous data transfer operations
SYNOPSIS
WAIT( [UNIT=] file-unit-number,
[END=label,] [EOR=label,] [ERR=label,] [ID=scalar-int-expr,] [IOMSG=iomsg-variable,] [IOSTAT=scalar-int-variable] )
DESCRIPTION
The WAIT(7f) statement performs a wait operation for specified pending asynchronous data transfer operations.
The CLOSE, INQUIRE, and file positioning statements may also perform wait operations.
Execution of a WAIT statement specifying a unit that does not exist, has no file connected to it, or is not open for asynchronous input/output is permitted, provided that the WAIT statement has no ID= specifier; such a WAIT statement does not cause an error or end-of-file condition to occur.
An EOR= specifier has no effect if the pending data transfer operation is not a nonadvancing read.
An END= specifier has no effect if the pending data transfer operation is not a READ.
OPTIONS
No specifier shall appear more than once in a given wait-spec-list.
[UNIT=]file-unit-number A file-unit-number shall be specified in a wait-spec-list; if the optional characters UNIT= are omitted, the file-unit-number shall be the first item in the wait-spec-list. END=label, EOR=label, ERR=label The label in the ERR=, EOR=, or END= specifier is a statement label of a branch target statement that appears in the same scoping unit as the WAIT statement. ID=scalar-int-expr The value of the expression specified in the ID= specifier shall be the identifier of a pending data transfer operation for the specified unit. If the ID= specifier appears, a wait operation for the specified data transfer operation is performed. If the ID= specifier is omitted, wait operations for all pending data transfers for the specified unit are performed. IOMSG=iomsg-variable if IOSTAT is not zero, a corresponding message describing the error IOSTAT=scalar-int-variable status value indicating if an error occurred. zero (0) indicates no error occurred.
EXAMPLE
SEE ALSO
BACKSPACE(7), CLOSE(7), ENDFILE(7), FLUSH(7), INQUIRE(7), OPEN(7), PRINT(7), READ(7), REWIND(7), WAIT(7), WRITE(7)
| Nemo Release 3.1 | wait (7fortran) | August 19, 2024 |
