fixed version, otherwise you'll continue to encounter breakage.
DESCR("sign of value");
DATA(insert OID = 1707 ( round PGUID 12 f t t t 2 f 1700 "1700 23" 100 0 0 100 numeric_round - ));
DESCR("value rounded to 'scale'");
-DATA(insert OID = 1708 ( round PGUID 14 f t t t 1 f 1700 "1700" 100 0 0 100 "select numeric_round($1,0)" - ));
+DATA(insert OID = 1708 ( round PGUID 14 f t t t 1 f 1700 "1700" 100 0 0 100 "select round($1,0)" - ));
DESCR("value rounded to 'scale' of zero");
DATA(insert OID = 1709 ( trunc PGUID 12 f t t t 2 f 1700 "1700 23" 100 0 0 100 numeric_trunc - ));
DESCR("value truncated to 'scale'");