rewind3p
Reset the file position indicator in a stream
Usage
#include <stdio.h>
void rewind(FILE *stream);
Prolog
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.
Overview
The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of POSIX.1‐2017 defers to the ISO C standard.
The call:
rewind(stream)
shall be equivalent to:
(void) fseek(stream, 0L, SEEK_SET)
except that rewind() shall also clear the error indicator.
Since rewind() does not return a value, an application wishing to detect errors should clear errno, then call rewind(), and if errno is non-zero, assume an error has occurred.
Return value
The rewind() function shall not return a value.
Errors
Refer to fseek() with the exception of [EINVAL] which does not apply.
The following sections are informative.
Examples
None.
Application usage
None.
Rationale
None.
Future directions
None.