REWIND(P) POSIX Programmer's Manual REWIND(P)
rewind - reset the file position indicator in a stream
void rewind(FILE *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.
The rewind() function shall not return a value.
Refer to fseek() with the exception of [EINVAL] which does not apply.
The following sections are informative.
fseek() , the Base Definitions volume of IEEE Std 1003.1-2001, <stdio.h>
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE
and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained
online at http://www.opengroup.org/unix/online.html .
IEEE/The Open Group 2003 REWIND(P)