xref _MathIeeeDoubBasBase

 xdef __ieeefltubd
__ieeefltubd:
 moveq   #0,d0
 move.b  4(sp),d0
 move.l  a6,-(sp)
 move.l  _MathIeeeDoubBasBase,a6
 jsr     -36(a6)
 move.l  (sp)+,a6
 rts