The Extended Multiply and Integerize routine (D-Floating-Point
    Values) allows higher-level language users to perform accurate
    range reduction of D-floating arguments.

    On Alpha and I64 systems, D-floating-point values are not
    supported in full precision in native OpenVMS Alpha and I64
    programs. They are precise to 56 bits on VAX systems, 53 or 56
    bits in translated VAX images, and 53 bits in native OpenVMS
    Alpha and I64 programs.

    Format

      LIB$EMODD  floating-point-multiplier ,multiplier-extension

                 ,floating-point-multiplicand ,integer-portion

                 ,fractional-portion