1 SET CURRENT DECFLOAT ROUNDING MODE
2!  = 
2?

3.0 ROUND_CEILING
3.0 ROUND_DOWN
3.0 ROUND_FLOOR
3.0 ROUND_HALF_DOWN
3.0 ROUND_HALF_EVEN
3.0 ROUND_HALF_UP
3.0 ROUND_UP
3.0 variable
3.0 string-constant