xref _MathIeeeSingBasBase

 xdef __ieeefltsbl
__ieeefltsbl:
 move.b  4(sp),d0
 ext.w   d0
 ext.l   d0
 move.l  a6,-(sp)
 move.l  _MathIeeeSingBasBase,a6
 jsr     -36(a6)
 move.l  (sp)+,a6
 rts