packed-decimal-dividend
    OpenVMS usage:varying_arg
    type:         packed decimal string
    access:       read only
    mechanism:    by reference
    Dividend. The packed-decimal-dividend argument is the address of
    a packed decimal string that contains the shifted dividend.
    Before being passed as input, the packed-decimal-dividend
    argument is always multiplied by 10**c, where c is defined as
    follows:
    c = 31 - prec(packed-decimal-dividend)
    Multiplying packed-decimal-dividend by 10**c makes packed-
    decimal-dividend a 31-digit number.
 packed-decimal-divisor
    OpenVMS usage:varying_arg
    type:         packed decimal string
    access:       read only
    mechanism:    by reference
    Divisor. The packed-decimal-divisor argument is the address of a
    packed decimal string that contains the divisor.
 divisor-precision
    OpenVMS usage:word_signed
    type:         word (signed)
    access:       read only
    mechanism:    by value
    Precision of the divisor. The divisor-precision argument is a
    signed word integer that contains the precision of the divisor;
    high-order bits are filled with zeros.
 packed-decimal-quotient
    OpenVMS usage:varying_arg
    type:         packed decimal string
    access:       write only
    mechanism:    by reference
    Quotient. The packed-decimal-quotient argument is the address of
    a packed decimal string into which OTS$DIV_PK_SHORT writes the
    quotient.
 quotient-precision
    OpenVMS usage:word_signed
    type:         word (signed)
    access:       read only
    mechanism:    by value
    Precision of the quotient. The quotient-precision argument is a
    signed word that contains the precision of the quotient; high-
    order bits are filled with zeros.
 precision-data
    OpenVMS usage:word_signed
    type:         word (signed)
    access:       read only
    mechanism:    by value
    Additional digits of precision required. The precision-data
    argument is a signed word that contains the value of the
    additional digits of precision required.
    OTS$DIV_PK_SHORT computes the precision-data argument as follows:
    precision-data = scale(packed-decimal-quotient)
    + scale(packed-decimal-divisor)
    - scale(packed-decimal-dividend)
    - 31 + prec(packed-decimal-dividend)