fsetpos.c

C标准库源代码

/***
*fsetpos.c - Contains fsetpos runtime
*
*       Copyright (c) 1987-1997, Microsoft Corporation. All rights reserved.
*
*Purpose:
*       Fsetpos sets the file position using an internal value returned by an
*       earlier fgetpos call.
*
*******************************************************************************/

#include <cruntime.h>
#include <stdio.h>
#include <internal.h>

/***
*int fsetpos(stream,pos) - Set file positioning
*
*Purpose:
*       Fsetpos sets the file position for the file indicated by [stream] to
*       the position indicated by [pos].  The [pos] value is defined to be in
*       an internal format (not to be interpreted by the user) and has been
*       generated by an earlier fgetpos call.
*
*Entry:
*       FILE *stream = pointer to a file stream value
*       fpos_t *pos = pointer to a file positioning value
*
*Exit:
*       Successful call returns 0.
*       Unsuccessful call returns non-zero (!0).
*
*Exceptions:
*       None.
*******************************************************************************/

int __cdecl fsetpos (
        FILE *stream,
        const fpos_t *pos
        )
{
#ifdef _MAC
        return( fseek(stream, (long) *pos, SEEK_SET) );
#else  /* _MAC */
        return( _fseeki64(stream, *pos, SEEK_SET) );
#endif  /* _MAC */
}