- check-ratnum LOC OBJ #!optional ARGNAMprocedure
- check-positive-ratnum LOC OBJ #!optional ARGNAMprocedure
- check-non-negative-ratnum LOC OBJ #!optional ARGNAMprocedure
- check-negative-ratnum LOC OBJ #!optional ARGNAMprocedure
- check-non-positive-ratnum LOC OBJ #!optional ARGNAMprocedure