int rset_default_forward(RSET ct, RSFD rfd, void *buf, int *term_index,
int (*cmpfunc)(const void *p1, const void *p2),
const void *untilbuf);
int rset_default_forward(RSET ct, RSFD rfd, void *buf, int *term_index,
int (*cmpfunc)(const void *p1, const void *p2),
const void *untilbuf);