sm_stdseek
sm_stdclose, sm_stdread, sm_stdseek, sm_stdwrite,
sm_stdclose, sm_stdread, sm_stdseek, sm_stdwrite,
sm_stdclose, sm_stdread, sm_stdseek, sm_stdwrite, \
if (seekfn != sm_stdseek ||
off_t sm_stdseek __P((SM_FILE_T *, off_t, int));
fp->f_seek == sm_stdseek)