afp()
    Converts ASCII string variable into fast floating-point.

arnd()
    ASCII round-off of the provided floating-point string."

dbf()
    Accepts a dual-binary format floating-point number and converts it to
    FFP format.

fpa()
    Accepts an FFP number and the address of the ASCII string where its
    converted output is to be stored.  The number is converted to a NULL
    terminated ASCII string and stored at the address provided.
    Additionally, the base ten (10) exponent in binary form is returned.