Appending one or more letters to a floating-point instruction determines the VAX or IEEE rounding mode to be used.
VAX Rounding Mode Qualifiers
| Mode | Qualifier |
| Normal rounding | None |
| Chopped | c |
IEEE Rounding Mode Qualifiers
| Mode | Qualifiers |
| Normal rounding | None |
| Plus infinity | d (ensure that the dyn field of the FPCR is 11) |
| Minus infinity | m |
| Chopped | c |