?? fgetpos.c
字號(hào):
/***
*fgetpos.c - Contains the fgetpos runtime
*
* Copyright (c) 1987-1997, Microsoft Corporation. All rights reserved.
*
*Purpose:
* Get file position (in an internal format).
*
*******************************************************************************/
#include <cruntime.h>
#include <stdio.h>
#include <internal.h>
/***
*int fgetpos(stream,pos) - Get file position (internal format)
*
*Purpose:
* Fgetpos gets the current file position for the file identified by
* [stream]. The file position is returned in the object pointed to
* by [pos] and is in internal format; that is, the user is not supposed
* to interpret the value but simply use it in the fsetpos call. Our
* implementation simply uses fseek/ftell.
*
*Entry:
* FILE *stream = pointer to a file stream value
* fpos_t *pos = pointer to a file position value
*
*Exit:
* Successful fgetpos call returns 0.
* Unsuccessful fgetpos call returns non-zero (!0) value and sets
* ERRNO (this is done by ftell and passed back by fgetpos).
*
*Exceptions:
* None.
*
*******************************************************************************/
int __cdecl fgetpos (
FILE *stream,
fpos_t *pos
)
{
#ifdef _MAC
int posl = ftell(stream);
*pos = (fpos_t) posl;
if ( posl != -1L )
#else /* _MAC */
if ( (*pos = _ftelli64(stream)) != -1i64 )
#endif /* _MAC */
return(0);
else
return(-1);
}
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