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

ID 767251
Date 3/22/2024
Public

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I/O Status Specifier (IOSTAT=)

The I/O status specifier designates a variable to store a value indicating the status of a data transfer operation. It takes the following form:

IOSTAT=i-var

i-var

Is a scalar integer variable. When a data transfer statement is executed, i-var is set to one of the following values:

A positive integer

Indicating an error condition occurred.

A negative integer

Indicating an end-of-file or end-of-record condition occurred. The negative integers differ depending on which condition occurred.

Zero

Indicating no error, end-of-file, or end-of-record condition occurred.

Execution continues with the statement following the data transfer statement, or the statement identified by a branch specifier (if any).

An end-of-file condition occurs only during execution of a sequential READ statement; an end-of-record condition occurs only during execution of a nonadvancing READ statement.