TO_LOOP
status = SINGLE(TO_LOOP) (step, data, inptrp, inend, &outbuf,
status = TO_LOOP (step, data, inptrp, inend, &outbuf, outend,
status = GEN_unaligned (TO_LOOP) (step, data, inptrp, inend,
nstatus = TO_LOOP (step, data, inptrp, inend,
nstatus = GEN_unaligned (TO_LOOP) (step, data,