VMS Help CC, Messages, BADFLOATTYPE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Message        <Context> this floating point type "<type>" is not
                supported on this platform.

 Description    The IEEE floating types __s_float and __t_float are
                not supported on the VAX platform.

 User Action    Change the type to a floating type that is supported
                on VAX, or compile the application on a platform that
                does support IEEE floating.