Message        Use of the floating register "<regnum>" in a #pragma
                linkage directive requires the /FLOAT=IEEE_FLOAT
                qualifier.

 Description    On IA64, VAX floating-point data is passed in general
                registers.  VSI C requires that any program that uses
                a floating point register in a linkage directive must
                be compiled with IEEE floating-point.

 User Action    Compile with IEEE floating-point.  Another option
                would be to remove the floating point registers from
                the linkage.