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Annotation of 3BSD/lib/libNS/ftell.c, revision 1.1

1.1     ! root        1: /* Copyright (c) 1979 Regents of the University of California */
        !             2: #include       <stdio.h>
        !             3: 
        !             4: /*
        !             5:  * Return file offset.
        !             6:  * Coordinates with buffering.
        !             7:  */
        !             8: 
        !             9: long   tell();
        !            10: 
        !            11: long ftell(iop)
        !            12: register FILE *iop;
        !            13: {
        !            14:        long tres;
        !            15:        register adjust;
        !            16: 
        !            17:        if (iop->_cnt < 0)
        !            18:                iop->_cnt = 0;
        !            19:        if (!(iop->_flag & (_IOREAD|_IOWRT)))
        !            20:                _error("ftell\n");
        !            21:        tres = tell(fileno(iop));
        !            22:        if (tres<0)
        !            23:                return(tres);
        !            24:        return(tres - iop->_delta + iop->_ptr - iop->_base);
        !            25: }

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