The Evaluate Polynomials routine (D-floating values) allows
    higher-level language users to evaluate D-floating value
    polynomials.

    D-floating 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$POLYD  polynomial-argument ,degree ,coefficient

                 ,floating-point-result

1  –  Returns

    OpenVMS usage:cond_value
    type:         longword (unsigned)
    access:       write only
    mechanism:    by value

2  –  Arguments

 polynomial-argument

    OpenVMS usage:floating_point
    type:         D_floating
    access:       read only
    mechanism:    by reference

    The address of a D-floating number that is the argument for the
    polynomial.

 degree

    OpenVMS usage:word_signed
    type:         word integer (signed)
    access:       read only
    mechanism:    by reference

    The address of a signed word integer that is the highest-numbered
    nonzero coefficient to participate in the evaluation.

    If the degree is 0, the result equals C[0]. The range of the
    degree is 0 to 31.

 coefficient

    OpenVMS usage:floating_point
    type:         D_floating
    access:       read only
    mechanism:    by reference, array reference

    The address of an array of D-floating coefficients. The
    coefficient of the highest-order term of the polynomial is the
    lowest-addressed element in the array.

 floating-point-result

    OpenVMS usage:floating_point
    type:         D_floating
    access:       write only
    mechanism:    by reference

    The address of a floating-point number that is the result of
    the calculation. LIB$POLYD writes the address of floating-point-
    result into a D-floating number.

    Intermediate multiplications are carried out using extended
    floating-point fractions (63 bits for POLYD).